<?xml version='1.0' encoding='utf-8'?>
<FilingSummary>
  <Version>3.22.1</Version>
  <ProcessingTime/>
  <ReportFormat>html</ReportFormat>
  <ContextCount>449</ContextCount>
  <ElementCount>537</ElementCount>
  <EntityCount>1</EntityCount>
  <FootnotesReported>true</FootnotesReported>
  <SegmentCount>147</SegmentCount>
  <ScenarioCount>0</ScenarioCount>
  <TuplesReported>false</TuplesReported>
  <UnitCount>5</UnitCount>
  <MyReports>
    <Report instance="spi_i10k.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R1.htm</HtmlFileName>
      <LongName>00000001 - Document - Cover</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://spisolar.com/role/Cover</Role>
      <ShortName>Cover</ShortName>
      <MenuCategory>Cover</MenuCategory>
      <Position>1</Position>
    </Report>
    <Report instance="spi_i10k.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R2.htm</HtmlFileName>
      <LongName>00000002 - Statement - CONSOLIDATED BALANCE SHEETS</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://spisolar.com/role/ConsolidatedBalanceSheets</Role>
      <ShortName>CONSOLIDATED BALANCE SHEETS</ShortName>
      <MenuCategory>Statements</MenuCategory>
      <Position>2</Position>
    </Report>
    <Report instance="spi_i10k.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R3.htm</HtmlFileName>
      <LongName>00000003 - Statement - CONSOLIDATED BALANCE SHEETS (Parenthetical)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://spisolar.com/role/ConsolidatedBalanceSheetsParenthetical</Role>
      <ShortName>CONSOLIDATED BALANCE SHEETS (Parenthetical)</ShortName>
      <MenuCategory>Statements</MenuCategory>
      <Position>3</Position>
    </Report>
    <Report instance="spi_i10k.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R4.htm</HtmlFileName>
      <LongName>00000004 - Statement - CONSOLIDATED STATEMENTS OF OPERATIONS</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://spisolar.com/role/ConsolidatedStatementsOfOperations</Role>
      <ShortName>CONSOLIDATED STATEMENTS OF OPERATIONS</ShortName>
      <MenuCategory>Statements</MenuCategory>
      <Position>4</Position>
    </Report>
    <Report instance="spi_i10k.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R5.htm</HtmlFileName>
      <LongName>00000005 - Statement - CONSOLIDATED STATEMENTS OF COMPREHENSIVE LOSS</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://spisolar.com/role/ConsolidatedStatementsOfComprehensiveLoss</Role>
      <ShortName>CONSOLIDATED STATEMENTS OF COMPREHENSIVE LOSS</ShortName>
      <MenuCategory>Statements</MenuCategory>
      <Position>5</Position>
    </Report>
    <Report instance="spi_i10k.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R6.htm</HtmlFileName>
      <LongName>00000006 - Statement - STATEMENTS OF CHANGES IN STOCKHOLDER'S EQUITY (DEFICIT)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://spisolar.com/role/StatementsOfChangesInStockholdersEquityDeficit</Role>
      <ShortName>STATEMENTS OF CHANGES IN STOCKHOLDER'S EQUITY (DEFICIT)</ShortName>
      <MenuCategory>Statements</MenuCategory>
      <Position>6</Position>
    </Report>
    <Report instance="spi_i10k.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R7.htm</HtmlFileName>
      <LongName>00000007 - Statement - CONSOLIDATED STATEMENTS OF CASH FLOWS</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://spisolar.com/role/ConsolidatedStatementsOfCashFlows</Role>
      <ShortName>CONSOLIDATED STATEMENTS OF CASH FLOWS</ShortName>
      <MenuCategory>Statements</MenuCategory>
      <Position>7</Position>
    </Report>
    <Report instance="spi_i10k.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R8.htm</HtmlFileName>
      <LongName>00000008 - Statement - Reconciliation of Cash, Cash Equivalents and Restricted Cash</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://spisolar.com/role/ReconciliationOfCashCashEquivalentsAndRestrictedCash</Role>
      <ShortName>Reconciliation of Cash, Cash Equivalents and Restricted Cash</ShortName>
      <MenuCategory>Statements</MenuCategory>
      <Position>8</Position>
    </Report>
    <Report instance="spi_i10k.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R9.htm</HtmlFileName>
      <LongName>00000009 - Disclosure - Description of Business and Organization</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://spisolar.com/role/DescriptionOfBusinessAndOrganization</Role>
      <ShortName>Description of Business and Organization</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>9</Position>
    </Report>
    <Report instance="spi_i10k.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R10.htm</HtmlFileName>
      <LongName>00000010 - Disclosure - Going concern</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://spisolar.com/role/GoingConcern</Role>
      <ShortName>Going concern</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>10</Position>
    </Report>
    <Report instance="spi_i10k.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R11.htm</HtmlFileName>
      <LongName>00000011 - Disclosure - Summary of Significant Accounting Policies</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://spisolar.com/role/SummaryOfSignificantAccountingPolicies</Role>
      <ShortName>Summary of Significant Accounting Policies</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>11</Position>
    </Report>
    <Report instance="spi_i10k.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R12.htm</HtmlFileName>
      <LongName>00000012 - Disclosure - Disposition of Italy Subsidiaries</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://spisolar.com/role/DispositionOfItalySubsidiaries</Role>
      <ShortName>Disposition of Italy Subsidiaries</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>12</Position>
    </Report>
    <Report instance="spi_i10k.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R13.htm</HtmlFileName>
      <LongName>00000013 - Disclosure - Acquisitions</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://spisolar.com/role/Acquisitions</Role>
      <ShortName>Acquisitions</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>13</Position>
    </Report>
    <Report instance="spi_i10k.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R14.htm</HtmlFileName>
      <LongName>00000014 - Disclosure - Accounts Receivable, Net</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://spisolar.com/role/AccountsReceivableNet</Role>
      <ShortName>Accounts Receivable, Net</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>14</Position>
    </Report>
    <Report instance="spi_i10k.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R15.htm</HtmlFileName>
      <LongName>00000015 - Disclosure - Inventories</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://spisolar.com/role/Inventories</Role>
      <ShortName>Inventories</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>15</Position>
    </Report>
    <Report instance="spi_i10k.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R16.htm</HtmlFileName>
      <LongName>00000016 - Disclosure - Project Assets</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://spisolar.com/role/ProjectAssets</Role>
      <ShortName>Project Assets</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>16</Position>
    </Report>
    <Report instance="spi_i10k.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R17.htm</HtmlFileName>
      <LongName>00000017 - Disclosure - Prepaid Expenses and Other Current Assets, Net</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://spisolar.com/role/PrepaidExpensesAndOtherCurrentAssetsNet</Role>
      <ShortName>Prepaid Expenses and Other Current Assets, Net</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>17</Position>
    </Report>
    <Report instance="spi_i10k.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R18.htm</HtmlFileName>
      <LongName>00000018 - Disclosure - Intangible Assets, Net</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://spisolar.com/role/IntangibleAssetsNet</Role>
      <ShortName>Intangible Assets, Net</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>18</Position>
    </Report>
    <Report instance="spi_i10k.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R19.htm</HtmlFileName>
      <LongName>00000019 - Disclosure - Property and Equipment, Net</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://spisolar.com/role/PropertyAndEquipmentNet</Role>
      <ShortName>Property and Equipment, Net</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>19</Position>
    </Report>
    <Report instance="spi_i10k.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R20.htm</HtmlFileName>
      <LongName>00000020 - Disclosure - Fair Value Measurement</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://spisolar.com/role/FairValueMeasurement</Role>
      <ShortName>Fair Value Measurement</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>20</Position>
    </Report>
    <Report instance="spi_i10k.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R21.htm</HtmlFileName>
      <LongName>00000021 - Disclosure - Accrued Liabilities</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://spisolar.com/role/AccruedLiabilities</Role>
      <ShortName>Accrued Liabilities</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>21</Position>
    </Report>
    <Report instance="spi_i10k.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R22.htm</HtmlFileName>
      <LongName>00000022 - Disclosure - Short-term Borrowings and Long-term Borrowings</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://spisolar.com/role/Short-termBorrowingsAndLong-termBorrowings</Role>
      <ShortName>Short-term Borrowings and Long-term Borrowings</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>22</Position>
    </Report>
    <Report instance="spi_i10k.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R23.htm</HtmlFileName>
      <LongName>00000023 - Disclosure - Convertible Bonds</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://spisolar.com/role/ConvertibleBonds</Role>
      <ShortName>Convertible Bonds</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>23</Position>
    </Report>
    <Report instance="spi_i10k.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R24.htm</HtmlFileName>
      <LongName>00000024 - Disclosure - Amount Due to an Affiliate</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://spisolar.com/role/AmountDueToAffiliate</Role>
      <ShortName>Amount Due to an Affiliate</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>24</Position>
    </Report>
    <Report instance="spi_i10k.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R25.htm</HtmlFileName>
      <LongName>00000025 - Disclosure - Ordinary Shares</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://spisolar.com/role/OrdinaryShares</Role>
      <ShortName>Ordinary Shares</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>25</Position>
    </Report>
    <Report instance="spi_i10k.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R26.htm</HtmlFileName>
      <LongName>00000026 - Disclosure - Noncontrolling Interests</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://spisolar.com/role/NoncontrollingInterests</Role>
      <ShortName>Noncontrolling Interests</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>26</Position>
    </Report>
    <Report instance="spi_i10k.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R27.htm</HtmlFileName>
      <LongName>00000027 - Disclosure - Share-based Compensation</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://spisolar.com/role/Share-basedCompensation</Role>
      <ShortName>Share-based Compensation</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>27</Position>
    </Report>
    <Report instance="spi_i10k.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R28.htm</HtmlFileName>
      <LongName>00000028 - Disclosure - Income Taxes</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://spisolar.com/role/IncomeTaxes</Role>
      <ShortName>Income Taxes</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>28</Position>
    </Report>
    <Report instance="spi_i10k.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R29.htm</HtmlFileName>
      <LongName>00000029 - Disclosure - Net Loss Per Share</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://spisolar.com/role/NetLossPerShare</Role>
      <ShortName>Net Loss Per Share</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>29</Position>
    </Report>
    <Report instance="spi_i10k.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R30.htm</HtmlFileName>
      <LongName>00000030 - Disclosure - Leases</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://spisolar.com/role/Leases</Role>
      <ShortName>Leases</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>30</Position>
    </Report>
    <Report instance="spi_i10k.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R31.htm</HtmlFileName>
      <LongName>00000031 - Disclosure - Commitments and Contingencies</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://spisolar.com/role/CommitmentsAndContingencies</Role>
      <ShortName>Commitments and Contingencies</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>31</Position>
    </Report>
    <Report instance="spi_i10k.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R32.htm</HtmlFileName>
      <LongName>00000032 - Disclosure - Concentration Risk</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://spisolar.com/role/ConcentrationRisk</Role>
      <ShortName>Concentration Risk</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>32</Position>
    </Report>
    <Report instance="spi_i10k.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R33.htm</HtmlFileName>
      <LongName>00000033 - Disclosure - Related Party Transactions</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://spisolar.com/role/RelatedPartyTransactions</Role>
      <ShortName>Related Party Transactions</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>33</Position>
    </Report>
    <Report instance="spi_i10k.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R34.htm</HtmlFileName>
      <LongName>00000034 - Disclosure - Segment information</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://spisolar.com/role/SegmentInformation</Role>
      <ShortName>Segment information</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>34</Position>
    </Report>
    <Report instance="spi_i10k.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R35.htm</HtmlFileName>
      <LongName>00000035 - Disclosure - Subsequent Events</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://spisolar.com/role/SubsequentEvents</Role>
      <ShortName>Subsequent Events</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>35</Position>
    </Report>
    <Report instance="spi_i10k.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R36.htm</HtmlFileName>
      <LongName>00000036 - Disclosure - Summary of Significant Accounting Policies (Policies)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://spisolar.com/role/SummaryOfSignificantAccountingPoliciesPolicies</Role>
      <ShortName>Summary of Significant Accounting Policies (Policies)</ShortName>
      <MenuCategory>Policies</MenuCategory>
      <ParentRole>http://spisolar.com/role/SummaryOfSignificantAccountingPolicies</ParentRole>
      <Position>36</Position>
    </Report>
    <Report instance="spi_i10k.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R37.htm</HtmlFileName>
      <LongName>00000037 - Disclosure - Description of Business and Organization (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://spisolar.com/role/DescriptionOfBusinessAndOrganizationTables</Role>
      <ShortName>Description of Business and Organization (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://spisolar.com/role/DescriptionOfBusinessAndOrganization</ParentRole>
      <Position>37</Position>
    </Report>
    <Report instance="spi_i10k.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R38.htm</HtmlFileName>
      <LongName>00000038 - Disclosure - Summary of Significant Accounting Policies (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://spisolar.com/role/SummaryOfSignificantAccountingPoliciesTables</Role>
      <ShortName>Summary of Significant Accounting Policies (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://spisolar.com/role/SummaryOfSignificantAccountingPolicies</ParentRole>
      <Position>38</Position>
    </Report>
    <Report instance="spi_i10k.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R39.htm</HtmlFileName>
      <LongName>00000039 - Disclosure - Acquisitions (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://spisolar.com/role/AcquisitionsTables</Role>
      <ShortName>Acquisitions (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://spisolar.com/role/Acquisitions</ParentRole>
      <Position>39</Position>
    </Report>
    <Report instance="spi_i10k.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R40.htm</HtmlFileName>
      <LongName>00000040 - Disclosure - Accounts Receivable, Net (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://spisolar.com/role/AccountsReceivableNetTables</Role>
      <ShortName>Accounts Receivable, Net (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://spisolar.com/role/AccountsReceivableNet</ParentRole>
      <Position>40</Position>
    </Report>
    <Report instance="spi_i10k.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R41.htm</HtmlFileName>
      <LongName>00000041 - Disclosure - Inventories (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://spisolar.com/role/InventoriesTables</Role>
      <ShortName>Inventories (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://spisolar.com/role/Inventories</ParentRole>
      <Position>41</Position>
    </Report>
    <Report instance="spi_i10k.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R42.htm</HtmlFileName>
      <LongName>00000042 - Disclosure - Project Assets (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://spisolar.com/role/ProjectAssetsTables</Role>
      <ShortName>Project Assets (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://spisolar.com/role/ProjectAssets</ParentRole>
      <Position>42</Position>
    </Report>
    <Report instance="spi_i10k.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R43.htm</HtmlFileName>
      <LongName>00000043 - Disclosure - Prepaid Expenses and Other Current Assets, Net (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://spisolar.com/role/PrepaidExpensesAndOtherCurrentAssetsNetTables</Role>
      <ShortName>Prepaid Expenses and Other Current Assets, Net (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://spisolar.com/role/PrepaidExpensesAndOtherCurrentAssetsNet</ParentRole>
      <Position>43</Position>
    </Report>
    <Report instance="spi_i10k.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R44.htm</HtmlFileName>
      <LongName>00000044 - Disclosure - Intangible Assets, Net (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://spisolar.com/role/IntangibleAssetsNetTables</Role>
      <ShortName>Intangible Assets, Net (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://spisolar.com/role/IntangibleAssetsNet</ParentRole>
      <Position>44</Position>
    </Report>
    <Report instance="spi_i10k.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R45.htm</HtmlFileName>
      <LongName>00000045 - Disclosure - Property and Equipment, Net (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://spisolar.com/role/PropertyAndEquipmentNetTables</Role>
      <ShortName>Property and Equipment, Net (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://spisolar.com/role/PropertyAndEquipmentNet</ParentRole>
      <Position>45</Position>
    </Report>
    <Report instance="spi_i10k.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R46.htm</HtmlFileName>
      <LongName>00000046 - Disclosure - Fair Value Measurement (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://spisolar.com/role/FairValueMeasurementTables</Role>
      <ShortName>Fair Value Measurement (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://spisolar.com/role/FairValueMeasurement</ParentRole>
      <Position>46</Position>
    </Report>
    <Report instance="spi_i10k.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R47.htm</HtmlFileName>
      <LongName>00000047 - Disclosure - Accrued Liabilities (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://spisolar.com/role/AccruedLiabilitiesTables</Role>
      <ShortName>Accrued Liabilities (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://spisolar.com/role/AccruedLiabilities</ParentRole>
      <Position>47</Position>
    </Report>
    <Report instance="spi_i10k.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R48.htm</HtmlFileName>
      <LongName>00000048 - Disclosure - Short-term Borrowings and Long-term Borrowings (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://spisolar.com/role/Short-termBorrowingsAndLong-termBorrowingsTables</Role>
      <ShortName>Short-term Borrowings and Long-term Borrowings (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://spisolar.com/role/Short-termBorrowingsAndLong-termBorrowings</ParentRole>
      <Position>48</Position>
    </Report>
    <Report instance="spi_i10k.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R49.htm</HtmlFileName>
      <LongName>00000049 - Disclosure - Convertible Bonds (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://spisolar.com/role/ConvertibleBondsTables</Role>
      <ShortName>Convertible Bonds (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://spisolar.com/role/ConvertibleBonds</ParentRole>
      <Position>49</Position>
    </Report>
    <Report instance="spi_i10k.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R50.htm</HtmlFileName>
      <LongName>00000050 - Disclosure - Amount Due to an Affiliate (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://spisolar.com/role/AmountDueToAffiliateTables</Role>
      <ShortName>Amount Due to an Affiliate (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://spisolar.com/role/AmountDueToAffiliate</ParentRole>
      <Position>50</Position>
    </Report>
    <Report instance="spi_i10k.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R51.htm</HtmlFileName>
      <LongName>00000051 - Disclosure - Share-based Compensation (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://spisolar.com/role/Share-basedCompensationTables</Role>
      <ShortName>Share-based Compensation (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://spisolar.com/role/Share-basedCompensation</ParentRole>
      <Position>51</Position>
    </Report>
    <Report instance="spi_i10k.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R52.htm</HtmlFileName>
      <LongName>00000052 - Disclosure - Income Taxes (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://spisolar.com/role/IncomeTaxesTables</Role>
      <ShortName>Income Taxes (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://spisolar.com/role/IncomeTaxes</ParentRole>
      <Position>52</Position>
    </Report>
    <Report instance="spi_i10k.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R53.htm</HtmlFileName>
      <LongName>00000053 - Disclosure - Net Loss Per Share (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://spisolar.com/role/NetLossPerShareTables</Role>
      <ShortName>Net Loss Per Share (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://spisolar.com/role/NetLossPerShare</ParentRole>
      <Position>53</Position>
    </Report>
    <Report instance="spi_i10k.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R54.htm</HtmlFileName>
      <LongName>00000054 - Disclosure - Leases (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://spisolar.com/role/LeasesTables</Role>
      <ShortName>Leases (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://spisolar.com/role/Leases</ParentRole>
      <Position>54</Position>
    </Report>
    <Report instance="spi_i10k.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R55.htm</HtmlFileName>
      <LongName>00000055 - Disclosure - Segment information (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://spisolar.com/role/SegmentInformationTables</Role>
      <ShortName>Segment information (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://spisolar.com/role/SegmentInformation</ParentRole>
      <Position>55</Position>
    </Report>
    <Report instance="spi_i10k.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R56.htm</HtmlFileName>
      <LongName>00000056 - Disclosure - Description of Business and Organization (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://spisolar.com/role/DescriptionOfBusinessAndOrganizationDetails</Role>
      <ShortName>Description of Business and Organization (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://spisolar.com/role/DescriptionOfBusinessAndOrganizationTables</ParentRole>
      <Position>56</Position>
    </Report>
    <Report instance="spi_i10k.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R57.htm</HtmlFileName>
      <LongName>00000057 - Disclosure - Description of Business and Organization (Details Narrative)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://spisolar.com/role/DescriptionOfBusinessAndOrganizationDetailsNarrative</Role>
      <ShortName>Description of Business and Organization (Details Narrative)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://spisolar.com/role/DescriptionOfBusinessAndOrganizationTables</ParentRole>
      <Position>57</Position>
    </Report>
    <Report instance="spi_i10k.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R58.htm</HtmlFileName>
      <LongName>00000058 - Disclosure - Going concern (Details Narrative)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://spisolar.com/role/GoingConcernDetailsNarrative</Role>
      <ShortName>Going concern (Details Narrative)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://spisolar.com/role/GoingConcern</ParentRole>
      <Position>58</Position>
    </Report>
    <Report instance="spi_i10k.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R59.htm</HtmlFileName>
      <LongName>00000059 - Disclosure - Summary of Significant Accounting Policies (Details - PPE useful lives)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://spisolar.com/role/SummaryOfSignificantAccountingPoliciesDetails-PpeUsefulLives</Role>
      <ShortName>Summary of Significant Accounting Policies (Details - PPE useful lives)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://spisolar.com/role/SummaryOfSignificantAccountingPoliciesTables</ParentRole>
      <Position>59</Position>
    </Report>
    <Report instance="spi_i10k.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R60.htm</HtmlFileName>
      <LongName>00000060 - Disclosure - Summary of Significant Accounting Policies (Details - Disaggregation of revenue by revenue stream)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://spisolar.com/role/SummaryOfSignificantAccountingPoliciesDetails-DisaggregationOfRevenueByRevenueStream</Role>
      <ShortName>Summary of Significant Accounting Policies (Details - Disaggregation of revenue by revenue stream)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://spisolar.com/role/SummaryOfSignificantAccountingPoliciesTables</ParentRole>
      <Position>60</Position>
    </Report>
    <Report instance="spi_i10k.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R61.htm</HtmlFileName>
      <LongName>00000061 - Disclosure - Summary of Significant Accounting Policies (Details - Contract balance)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://spisolar.com/role/SummaryOfSignificantAccountingPoliciesDetails-ContractBalance</Role>
      <ShortName>Summary of Significant Accounting Policies (Details - Contract balance)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://spisolar.com/role/SummaryOfSignificantAccountingPoliciesTables</ParentRole>
      <Position>61</Position>
    </Report>
    <Report instance="spi_i10k.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R62.htm</HtmlFileName>
      <LongName>00000062 - Disclosure - Summary of Significant Accounting Policies (Details Narrative)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://spisolar.com/role/SummaryOfSignificantAccountingPoliciesDetailsNarrative</Role>
      <ShortName>Summary of Significant Accounting Policies (Details Narrative)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://spisolar.com/role/SummaryOfSignificantAccountingPoliciesTables</ParentRole>
      <Position>62</Position>
    </Report>
    <Report instance="spi_i10k.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R63.htm</HtmlFileName>
      <LongName>00000063 - Disclosure - Disposition of Italy Subsidiaries (Details Narrative)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://spisolar.com/role/DispositionOfItalySubsidiariesDetailsNarrative</Role>
      <ShortName>Disposition of Italy Subsidiaries (Details Narrative)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://spisolar.com/role/DispositionOfItalySubsidiaries</ParentRole>
      <Position>63</Position>
    </Report>
    <Report instance="spi_i10k.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R64.htm</HtmlFileName>
      <LongName>00000064 - Disclosure - Acquisitions (Details - Allocation of purchase price)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://spisolar.com/role/AcquisitionsDetails-AllocationOfPurchasePrice</Role>
      <ShortName>Acquisitions (Details - Allocation of purchase price)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://spisolar.com/role/AcquisitionsTables</ParentRole>
      <Position>64</Position>
    </Report>
    <Report instance="spi_i10k.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R65.htm</HtmlFileName>
      <LongName>00000065 - Disclosure - Acquisitions (Details Narrative)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://spisolar.com/role/AcquisitionsDetailsNarrative</Role>
      <ShortName>Acquisitions (Details Narrative)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://spisolar.com/role/AcquisitionsTables</ParentRole>
      <Position>65</Position>
    </Report>
    <Report instance="spi_i10k.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R66.htm</HtmlFileName>
      <LongName>00000066 - Disclosure - Accounts Receivable, net (Details - Accounts receivable)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://spisolar.com/role/AccountsReceivableNetDetails-AccountsReceivable</Role>
      <ShortName>Accounts Receivable, net (Details - Accounts receivable)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://spisolar.com/role/AccountsReceivableNetTables</ParentRole>
      <Position>66</Position>
    </Report>
    <Report instance="spi_i10k.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R67.htm</HtmlFileName>
      <LongName>00000067 - Disclosure - Accounts Receivable, net (Details - Allowance for Doubtful Accounts)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://spisolar.com/role/AccountsReceivableNetDetails-AllowanceForDoubtfulAccounts</Role>
      <ShortName>Accounts Receivable, net (Details - Allowance for Doubtful Accounts)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://spisolar.com/role/AccountsReceivableNetTables</ParentRole>
      <Position>67</Position>
    </Report>
    <Report instance="spi_i10k.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R68.htm</HtmlFileName>
      <LongName>00000068 - Disclosure - Accounts Receivable, Net (Details Narrative)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://spisolar.com/role/AccountsReceivableNetDetailsNarrative</Role>
      <ShortName>Accounts Receivable, Net (Details Narrative)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://spisolar.com/role/AccountsReceivableNetTables</ParentRole>
      <Position>68</Position>
    </Report>
    <Report instance="spi_i10k.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R69.htm</HtmlFileName>
      <LongName>00000069 - Disclosure - Inventories, net (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://spisolar.com/role/InventoriesNetDetails</Role>
      <ShortName>Inventories, net (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>69</Position>
    </Report>
    <Report instance="spi_i10k.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R70.htm</HtmlFileName>
      <LongName>00000070 - Disclosure - Inventories (Details Narrative)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://spisolar.com/role/InventoriesDetailsNarrative</Role>
      <ShortName>Inventories (Details Narrative)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://spisolar.com/role/InventoriesTables</ParentRole>
      <Position>70</Position>
    </Report>
    <Report instance="spi_i10k.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R71.htm</HtmlFileName>
      <LongName>00000071 - Disclosure - Project Assets, net (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://spisolar.com/role/ProjectAssetsNetDetails</Role>
      <ShortName>Project Assets, net (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>71</Position>
    </Report>
    <Report instance="spi_i10k.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R72.htm</HtmlFileName>
      <LongName>00000072 - Disclosure - Project Assets (Details Narrative)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://spisolar.com/role/ProjectAssetsDetailsNarrative</Role>
      <ShortName>Project Assets (Details Narrative)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://spisolar.com/role/ProjectAssetsTables</ParentRole>
      <Position>72</Position>
    </Report>
    <Report instance="spi_i10k.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R73.htm</HtmlFileName>
      <LongName>00000073 - Disclosure - Prepaid expenses and other current assets, net (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://spisolar.com/role/PrepaidExpensesAndOtherCurrentAssetsNetDetails</Role>
      <ShortName>Prepaid expenses and other current assets, net (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>73</Position>
    </Report>
    <Report instance="spi_i10k.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R74.htm</HtmlFileName>
      <LongName>00000074 - Disclosure - Prepaid Expenses and Other Current Assets, Net (Details Narrative)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://spisolar.com/role/PrepaidExpensesAndOtherCurrentAssetsNetDetailsNarrative</Role>
      <ShortName>Prepaid Expenses and Other Current Assets, Net (Details Narrative)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://spisolar.com/role/PrepaidExpensesAndOtherCurrentAssetsNetTables</ParentRole>
      <Position>74</Position>
    </Report>
    <Report instance="spi_i10k.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R75.htm</HtmlFileName>
      <LongName>00000075 - Disclosure - Intangible Assets, net (Details - Intangible Assets)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://spisolar.com/role/IntangibleAssetsNetDetails-IntangibleAssets</Role>
      <ShortName>Intangible Assets, net (Details - Intangible Assets)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://spisolar.com/role/IntangibleAssetsNetTables</ParentRole>
      <Position>75</Position>
    </Report>
    <Report instance="spi_i10k.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R76.htm</HtmlFileName>
      <LongName>00000076 - Disclosure - Intangible Assets, net (Details - Future Amortization)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://spisolar.com/role/IntangibleAssetsNetDetails-FutureAmortization</Role>
      <ShortName>Intangible Assets, net (Details - Future Amortization)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://spisolar.com/role/IntangibleAssetsNetTables</ParentRole>
      <Position>76</Position>
    </Report>
    <Report instance="spi_i10k.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R77.htm</HtmlFileName>
      <LongName>00000077 - Disclosure - Intangible Assets, Net (Details Narrative)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://spisolar.com/role/IntangibleAssetsNetDetailsNarrative</Role>
      <ShortName>Intangible Assets, Net (Details Narrative)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://spisolar.com/role/IntangibleAssetsNetTables</ParentRole>
      <Position>77</Position>
    </Report>
    <Report instance="spi_i10k.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R78.htm</HtmlFileName>
      <LongName>00000078 - Disclosure - Property, Plant and Equipment, net (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://spisolar.com/role/PropertyPlantAndEquipmentNetDetails</Role>
      <ShortName>Property, Plant and Equipment, net (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>78</Position>
    </Report>
    <Report instance="spi_i10k.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R79.htm</HtmlFileName>
      <LongName>00000079 - Disclosure - Property and Equipment, Net (Details Narrative)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://spisolar.com/role/PropertyAndEquipmentNetDetailsNarrative</Role>
      <ShortName>Property and Equipment, Net (Details Narrative)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://spisolar.com/role/PropertyAndEquipmentNetTables</ParentRole>
      <Position>79</Position>
    </Report>
    <Report instance="spi_i10k.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R80.htm</HtmlFileName>
      <LongName>00000080 - Disclosure - Fair value measurement (Details - ILIAD and Streeterville Capital)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://spisolar.com/role/FairValueMeasurementDetails-IliadAndStreetervilleCapital</Role>
      <ShortName>Fair value measurement (Details - ILIAD and Streeterville Capital)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>80</Position>
    </Report>
    <Report instance="spi_i10k.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R81.htm</HtmlFileName>
      <LongName>00000081 - Disclosure - Fair value measurement (Details - Fair value of warrants)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://spisolar.com/role/FairValueMeasurementDetails-FairValueOfWarrants</Role>
      <ShortName>Fair value measurement (Details - Fair value of warrants)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>81</Position>
    </Report>
    <Report instance="spi_i10k.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R82.htm</HtmlFileName>
      <LongName>00000082 - Disclosure - Fair Value Measurement (Details Narrative)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://spisolar.com/role/FairValueMeasurementDetailsNarrative</Role>
      <ShortName>Fair Value Measurement (Details Narrative)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://spisolar.com/role/FairValueMeasurementTables</ParentRole>
      <Position>82</Position>
    </Report>
    <Report instance="spi_i10k.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R83.htm</HtmlFileName>
      <LongName>00000083 - Disclosure - Accrued Liabilities (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://spisolar.com/role/AccruedLiabilitiesDetails</Role>
      <ShortName>Accrued Liabilities (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://spisolar.com/role/AccruedLiabilitiesTables</ParentRole>
      <Position>83</Position>
    </Report>
    <Report instance="spi_i10k.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R84.htm</HtmlFileName>
      <LongName>00000084 - Disclosure - Short-term Borrowings and Long-term Borrowings (Details - Debt)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://spisolar.com/role/Short-termBorrowingsAndLong-termBorrowingsDetails-Debt</Role>
      <ShortName>Short-term Borrowings and Long-term Borrowings (Details - Debt)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://spisolar.com/role/Short-termBorrowingsAndLong-termBorrowingsTables</ParentRole>
      <Position>84</Position>
    </Report>
    <Report instance="spi_i10k.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R85.htm</HtmlFileName>
      <LongName>00000085 - Disclosure - Short-term Borrowings and Long-term Borrowings (Details - Maturities)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://spisolar.com/role/Short-termBorrowingsAndLong-termBorrowingsDetails-Maturities</Role>
      <ShortName>Short-term Borrowings and Long-term Borrowings (Details - Maturities)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://spisolar.com/role/Short-termBorrowingsAndLong-termBorrowingsTables</ParentRole>
      <Position>85</Position>
    </Report>
    <Report instance="spi_i10k.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R86.htm</HtmlFileName>
      <LongName>00000086 - Disclosure - Short-term Borrowings and Long-term Borrowings (Details Narrative)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://spisolar.com/role/Short-termBorrowingsAndLong-termBorrowingsDetailsNarrative</Role>
      <ShortName>Short-term Borrowings and Long-term Borrowings (Details Narrative)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://spisolar.com/role/Short-termBorrowingsAndLong-termBorrowingsTables</ParentRole>
      <Position>86</Position>
    </Report>
    <Report instance="spi_i10k.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R87.htm</HtmlFileName>
      <LongName>00000087 - Disclosure - Convertible Bonds (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://spisolar.com/role/ConvertibleBondsDetails</Role>
      <ShortName>Convertible Bonds (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://spisolar.com/role/ConvertibleBondsTables</ParentRole>
      <Position>87</Position>
    </Report>
    <Report instance="spi_i10k.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R88.htm</HtmlFileName>
      <LongName>00000088 - Disclosure - Convertible Bonds (Details Narrative)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://spisolar.com/role/ConvertibleBondsDetailsNarrative</Role>
      <ShortName>Convertible Bonds (Details Narrative)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://spisolar.com/role/ConvertibleBondsTables</ParentRole>
      <Position>88</Position>
    </Report>
    <Report instance="spi_i10k.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R89.htm</HtmlFileName>
      <LongName>00000089 - Disclosure - Amount Due to an Affiliate (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://spisolar.com/role/AmountDueToAffiliateDetails</Role>
      <ShortName>Amount Due to an Affiliate (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://spisolar.com/role/AmountDueToAffiliateTables</ParentRole>
      <Position>89</Position>
    </Report>
    <Report instance="spi_i10k.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R90.htm</HtmlFileName>
      <LongName>00000090 - Disclosure - Ordinary Shares (Details Narrative)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://spisolar.com/role/OrdinarySharesDetailsNarrative</Role>
      <ShortName>Ordinary Shares (Details Narrative)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://spisolar.com/role/OrdinaryShares</ParentRole>
      <Position>90</Position>
    </Report>
    <Report instance="spi_i10k.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R91.htm</HtmlFileName>
      <LongName>00000091 - Disclosure - Noncontrolling Interests (Details Narrative)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://spisolar.com/role/NoncontrollingInterestsDetailsNarrative</Role>
      <ShortName>Noncontrolling Interests (Details Narrative)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://spisolar.com/role/NoncontrollingInterests</ParentRole>
      <Position>91</Position>
    </Report>
    <Report instance="spi_i10k.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R92.htm</HtmlFileName>
      <LongName>00000092 - Disclosure - Share-based Compensation (Details - Stock-Based Compensation Expense by Award type)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://spisolar.com/role/Share-basedCompensationDetails-Stock-basedCompensationExpenseByAwardType</Role>
      <ShortName>Share-based Compensation (Details - Stock-Based Compensation Expense by Award type)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://spisolar.com/role/Share-basedCompensationTables</ParentRole>
      <Position>92</Position>
    </Report>
    <Report instance="spi_i10k.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R93.htm</HtmlFileName>
      <LongName>00000093 - Disclosure - Share-based Compensation (Details - Compensation expense by line item)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://spisolar.com/role/Share-basedCompensationDetails-CompensationExpenseByLineItem</Role>
      <ShortName>Share-based Compensation (Details - Compensation expense by line item)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://spisolar.com/role/Share-basedCompensationTables</ParentRole>
      <Position>93</Position>
    </Report>
    <Report instance="spi_i10k.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R94.htm</HtmlFileName>
      <LongName>00000094 - Disclosure - Share-based Compensation (Details - Assumptions)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://spisolar.com/role/Share-basedCompensationDetails-Assumptions</Role>
      <ShortName>Share-based Compensation (Details - Assumptions)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://spisolar.com/role/Share-basedCompensationTables</ParentRole>
      <Position>94</Position>
    </Report>
    <Report instance="spi_i10k.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R95.htm</HtmlFileName>
      <LongName>00000095 - Disclosure - Share-based Compensation (Details - Option Activity)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://spisolar.com/role/Share-basedCompensationDetails-OptionActivity</Role>
      <ShortName>Share-based Compensation (Details - Option Activity)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://spisolar.com/role/Share-basedCompensationTables</ParentRole>
      <Position>95</Position>
    </Report>
    <Report instance="spi_i10k.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R96.htm</HtmlFileName>
      <LongName>00000096 - Disclosure - Share-based Compensation (Details - Options by Exercise Price)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://spisolar.com/role/Share-basedCompensationDetails-OptionsByExercisePrice</Role>
      <ShortName>Share-based Compensation (Details - Options by Exercise Price)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://spisolar.com/role/Share-basedCompensationTables</ParentRole>
      <Position>96</Position>
    </Report>
    <Report instance="spi_i10k.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R97.htm</HtmlFileName>
      <LongName>00000097 - Disclosure - Share-based Compensation (Details - RSU's)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://spisolar.com/role/Share-basedCompensationDetails-Rsus</Role>
      <ShortName>Share-based Compensation (Details - RSU's)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://spisolar.com/role/Share-basedCompensationTables</ParentRole>
      <Position>97</Position>
    </Report>
    <Report instance="spi_i10k.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R98.htm</HtmlFileName>
      <LongName>00000098 - Disclosure - Share-based Compensation (Details - Phoenix's stock option activities)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://spisolar.com/role/Share-basedCompensationDetails-PhoenixsStockOptionActivities</Role>
      <ShortName>Share-based Compensation (Details - Phoenix's stock option activities)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://spisolar.com/role/Share-basedCompensationTables</ParentRole>
      <Position>98</Position>
    </Report>
    <Report instance="spi_i10k.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R99.htm</HtmlFileName>
      <LongName>00000099 - Disclosure - Share-based Compensation (Details - SJ group stock option activities)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://spisolar.com/role/Share-basedCompensationDetails-SjGroupStockOptionActivities</Role>
      <ShortName>Share-based Compensation (Details - SJ group stock option activities)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://spisolar.com/role/Share-basedCompensationTables</ParentRole>
      <Position>99</Position>
    </Report>
    <Report instance="spi_i10k.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R100.htm</HtmlFileName>
      <LongName>00000100 - Disclosure - Share-based Compensation (Details Narrative)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://spisolar.com/role/Share-basedCompensationDetailsNarrative</Role>
      <ShortName>Share-based Compensation (Details Narrative)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://spisolar.com/role/Share-basedCompensationTables</ParentRole>
      <Position>100</Position>
    </Report>
    <Report instance="spi_i10k.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R101.htm</HtmlFileName>
      <LongName>00000101 - Disclosure - Income Taxes (Details - Loss before Provision)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://spisolar.com/role/IncomeTaxesDetails-LossBeforeProvision</Role>
      <ShortName>Income Taxes (Details - Loss before Provision)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://spisolar.com/role/IncomeTaxesTables</ParentRole>
      <Position>101</Position>
    </Report>
    <Report instance="spi_i10k.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R102.htm</HtmlFileName>
      <LongName>00000102 - Disclosure - Income Taxes (Details - Provision for income taxes)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://spisolar.com/role/IncomeTaxesDetails-ProvisionForIncomeTaxes</Role>
      <ShortName>Income Taxes (Details - Provision for income taxes)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://spisolar.com/role/IncomeTaxesTables</ParentRole>
      <Position>102</Position>
    </Report>
    <Report instance="spi_i10k.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R103.htm</HtmlFileName>
      <LongName>00000103 - Disclosure - Income Taxes (Details - Tax reconciliation)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://spisolar.com/role/IncomeTaxesDetails-TaxReconciliation</Role>
      <ShortName>Income Taxes (Details - Tax reconciliation)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://spisolar.com/role/IncomeTaxesTables</ParentRole>
      <Position>103</Position>
    </Report>
    <Report instance="spi_i10k.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R104.htm</HtmlFileName>
      <LongName>00000104 - Disclosure - Income Taxes (Details - Deferred income taxes)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://spisolar.com/role/IncomeTaxesDetails-DeferredIncomeTaxes</Role>
      <ShortName>Income Taxes (Details - Deferred income taxes)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://spisolar.com/role/IncomeTaxesTables</ParentRole>
      <Position>104</Position>
    </Report>
    <Report instance="spi_i10k.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R105.htm</HtmlFileName>
      <LongName>00000105 - Disclosure - Income Taxes (Details Narrative)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://spisolar.com/role/IncomeTaxesDetailsNarrative</Role>
      <ShortName>Income Taxes (Details Narrative)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://spisolar.com/role/IncomeTaxesTables</ParentRole>
      <Position>105</Position>
    </Report>
    <Report instance="spi_i10k.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R106.htm</HtmlFileName>
      <LongName>00000106 - Disclosure - Net Loss Per Share (Details - Basic and Diluted)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://spisolar.com/role/NetLossPerShareDetails-BasicAndDiluted</Role>
      <ShortName>Net Loss Per Share (Details - Basic and Diluted)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://spisolar.com/role/NetLossPerShareTables</ParentRole>
      <Position>106</Position>
    </Report>
    <Report instance="spi_i10k.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R107.htm</HtmlFileName>
      <LongName>00000107 - Disclosure - Net Loss Per Share (Details - Antidilutive shares)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://spisolar.com/role/NetLossPerShareDetails-AntidilutiveShares</Role>
      <ShortName>Net Loss Per Share (Details - Antidilutive shares)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://spisolar.com/role/NetLossPerShareTables</ParentRole>
      <Position>107</Position>
    </Report>
    <Report instance="spi_i10k.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R108.htm</HtmlFileName>
      <LongName>00000108 - Disclosure - Leases (Details - Maturity of Lease Liabilities)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://spisolar.com/role/LeasesDetails-MaturityOfLeaseLiabilities</Role>
      <ShortName>Leases (Details - Maturity of Lease Liabilities)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://spisolar.com/role/LeasesTables</ParentRole>
      <Position>108</Position>
    </Report>
    <Report instance="spi_i10k.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R109.htm</HtmlFileName>
      <LongName>00000109 - Disclosure - Leases (Details - Supplemental information related to operating leases)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://spisolar.com/role/LeasesDetails-SupplementalInformationRelatedToOperatingLeases</Role>
      <ShortName>Leases (Details - Supplemental information related to operating leases)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://spisolar.com/role/LeasesTables</ParentRole>
      <Position>109</Position>
    </Report>
    <Report instance="spi_i10k.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R110.htm</HtmlFileName>
      <LongName>00000110 - Disclosure - Leases (Details Narrative)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://spisolar.com/role/LeasesDetailsNarrative</Role>
      <ShortName>Leases (Details Narrative)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://spisolar.com/role/LeasesTables</ParentRole>
      <Position>110</Position>
    </Report>
    <Report instance="spi_i10k.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R111.htm</HtmlFileName>
      <LongName>00000111 - Disclosure - Commitments and Contingencies (Details Narrative)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://spisolar.com/role/CommitmentsAndContingenciesDetailsNarrative</Role>
      <ShortName>Commitments and Contingencies (Details Narrative)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://spisolar.com/role/CommitmentsAndContingencies</ParentRole>
      <Position>111</Position>
    </Report>
    <Report instance="spi_i10k.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R112.htm</HtmlFileName>
      <LongName>00000112 - Disclosure - Concentration Risk (Details Narrative)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://spisolar.com/role/ConcentrationRiskDetailsNarrative</Role>
      <ShortName>Concentration Risk (Details Narrative)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://spisolar.com/role/ConcentrationRisk</ParentRole>
      <Position>112</Position>
    </Report>
    <Report instance="spi_i10k.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R113.htm</HtmlFileName>
      <LongName>00000113 - Disclosure - Related Party Transactions (Details Narrative)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://spisolar.com/role/RelatedPartyTransactionsDetailsNarrative</Role>
      <ShortName>Related Party Transactions (Details Narrative)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://spisolar.com/role/RelatedPartyTransactions</ParentRole>
      <Position>113</Position>
    </Report>
    <Report instance="spi_i10k.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R114.htm</HtmlFileName>
      <LongName>00000114 - Disclosure - Segment Information (Details - Segment information)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://spisolar.com/role/SegmentInformationDetails-SegmentInformation</Role>
      <ShortName>Segment Information (Details - Segment information)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>114</Position>
    </Report>
    <Report instance="spi_i10k.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R115.htm</HtmlFileName>
      <LongName>00000115 - Disclosure - Segment Information (Details - Segment assets)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://spisolar.com/role/SegmentInformationDetails-SegmentAssets</Role>
      <ShortName>Segment Information (Details - Segment assets)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>115</Position>
    </Report>
    <Report instance="spi_i10k.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R116.htm</HtmlFileName>
      <LongName>00000116 - Disclosure - Segment Information (Details - intangible assets, long-term investment)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://spisolar.com/role/SegmentInformationDetails-IntangibleAssetsLong-termInvestment</Role>
      <ShortName>Segment Information (Details - intangible assets, long-term investment)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>116</Position>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <LongName>All Reports</LongName>
      <ReportType>Book</ReportType>
      <ShortName>All Reports</ShortName>
    </Report>
  </MyReports>
  <InputFiles>
    <File doctype="10-K" original="spi_i10k.htm">spi_i10k.htm</File>
    <File>spi-20211231.xsd</File>
    <File>spi-20211231_cal.xml</File>
    <File>spi-20211231_def.xml</File>
    <File>spi-20211231_lab.xml</File>
    <File>spi-20211231_pre.xml</File>
    <File>spi_ex021.htm</File>
    <File>spi_ex0403.htm</File>
    <File>spi_ex2301.htm</File>
    <File>spi_ex3101.htm</File>
    <File>spi_ex3102.htm</File>
    <File>spi_ex3201.htm</File>
  </InputFiles>
  <SupplementalFiles/>
  <BaseTaxonomies>
    <BaseTaxonomy items="1405">http://fasb.org/us-gaap/2021-01-31</BaseTaxonomy>
    <BaseTaxonomy items="36">http://xbrl.sec.gov/dei/2021q4</BaseTaxonomy>
  </BaseTaxonomies>
  <HasPresentationLinkbase>true</HasPresentationLinkbase>
  <HasCalculationLinkbase>true</HasCalculationLinkbase>
</FilingSummary>
