NORTHERN STATES POWER CO /WI/

Related Filers (4)

Financials (116)

10-Q
Friday, 10/27/2023
Quarterly Report for period ending 2023-09-30
10-Q
Thursday, 7/27/2023
Quarterly Report for period ending 2023-06-30
10-Q
Thursday, 4/27/2023
Quarterly Report for period ending 2023-03-31
10-K
Thursday, 2/23/2023
Annual Report for period ending 2022-12-31
10-Q
Thursday, 10/27/2022
Quarterly Report for period ending 2022-09-30
10-Q
Thursday, 7/28/2022
Quarterly Report for period ending 2022-06-30
10-Q
Thursday, 4/28/2022
Quarterly Report for period ending 2022-03-31
10-K
Wednesday, 2/23/2022
Annual Report for period ending 2021-12-31
10-Q
Thursday, 10/28/2021
Quarterly Report for period ending 2021-09-30
10-Q
Thursday, 7/29/2021
Quarterly Report for period ending 2021-06-30
10-Q
Thursday, 4/29/2021
Quarterly Report for period ending 2021-03-31
10-K
Wednesday, 2/17/2021
Annual Report for period ending 2020-12-31
10-Q
Thursday, 10/29/2020
Quarterly Report for period ending 2020-09-30
10-Q
Friday, 7/31/2020
Quarterly Report for period ending 2020-06-30
10-Q
Thursday, 5/7/2020
Quarterly Report for period ending 2020-03-31
10-K
Friday, 2/21/2020
Annual Report for period ending 2019-12-31
10-Q
Friday, 10/25/2019
Quarterly Report for period ending 2019-09-30
10-Q
Thursday, 8/1/2019
Quarterly Report for period ending 2019-06-30
10-Q
Friday, 4/26/2019
Quarterly Report for period ending 2019-03-31
10-K
Friday, 2/22/2019
Annual Report for period ending 2018-12-31
10-Q
Friday, 10/26/2018
Quarterly Report for period ending 2018-09-30
10-Q
Friday, 7/27/2018
Quarterly Report for period ending 2018-06-30
10-K/A
Friday, 7/27/2018
Annual Report for period ending 2017-12-31
10-Q
Friday, 4/27/2018
Quarterly Report for period ending 2018-03-31
10-K
Monday, 2/26/2018
Annual Report for period ending 2017-12-31
10-Q
Friday, 10/27/2017
Quarterly Report for period ending 2017-09-30
10-Q
Friday, 7/28/2017
Quarterly Report for period ending 2017-06-30
10-Q
Friday, 4/28/2017
Quarterly Report for period ending 2017-03-31
10-K
Friday, 2/24/2017
Annual Report for period ending 2016-12-31
10-Q
Monday, 10/31/2016
Quarterly Report for period ending 2016-09-30
10-Q
Thursday, 8/4/2016
Quarterly Report for period ending 2016-06-30
10-Q
Friday, 5/13/2016
Quarterly Report for period ending 2016-03-31
10-K
Monday, 2/22/2016
Annual Report for period ending 2015-12-31
10-Q
Monday, 11/2/2015
Quarterly Report for period ending 2015-09-30
10-Q
Monday, 8/3/2015
Quarterly Report for period ending 2015-06-30
10-Q
Monday, 5/4/2015
Quarterly Report for period ending 2015-03-31
10-K
Monday, 2/23/2015
Annual Report for period ending 2014-12-31
10-Q
Monday, 11/3/2014
Quarterly Report for period ending 2014-09-30
10-Q
Monday, 8/4/2014
Quarterly Report for period ending 2014-06-30
10-Q
Monday, 5/5/2014
Quarterly Report for period ending 2014-03-31
10-K
Monday, 2/24/2014
Annual Report for period ending 2013-12-31
10-Q/A
Friday, 11/8/2013
Quarterly Report for period ending 2013-09-30
10-Q
Monday, 10/28/2013
Quarterly Report for period ending 2013-09-30
10-Q
Monday, 8/5/2013
Quarterly Report for period ending 2013-06-30
10-Q
Monday, 5/6/2013
Quarterly Report for period ending 2013-03-31
10-K
Monday, 2/25/2013
Annual Report for period ending 2012-12-31
10-Q
Monday, 10/29/2012
Quarterly Report for period ending 2012-09-30
10-Q
Monday, 8/6/2012
Quarterly Report for period ending 2012-06-30
10-Q
Monday, 4/30/2012
Quarterly Report for period ending 2012-03-31
10-K
Monday, 2/27/2012
Annual Report for period ending 2011-12-31
10-Q
Monday, 10/31/2011
Quarterly Report for period ending 2011-09-30
10-Q
Monday, 8/1/2011
Quarterly Report for period ending 2011-06-30
10-Q
Monday, 5/2/2011
Quarterly Report for period ending 2011-03-31
10-K
Monday, 2/28/2011
Annual Report for period ending 2010-12-31
10-Q
Monday, 11/1/2010
Quarterly Report for period ending 2010-09-30
10-Q
Friday, 7/30/2010
Quarterly Report for period ending 2010-06-30
10-Q
Monday, 5/3/2010
Quarterly Report for period ending 2010-03-31
10-K
Monday, 3/1/2010
Annual Report for period ending 2009-12-31
10-Q
Monday, 11/2/2009
Quarterly Report for period ending 2009-09-30
10-Q
Monday, 8/3/2009
Quarterly Report for period ending 2009-06-30
10-Q
Monday, 5/4/2009
Quarterly Report for period ending 2009-03-31
10-K
Friday, 2/27/2009
Annual Report for period ending 2008-12-31
10-Q
Monday, 10/27/2008
Quarterly Report for period ending 2008-09-30
10-Q
Monday, 8/4/2008
Quarterly Report for period ending 2008-06-30
10-Q
Monday, 5/5/2008
Quarterly Report for period ending 2008-03-31
10-K
Monday, 2/25/2008
Annual Report for period ending 2007-12-31
10-Q
Monday, 10/29/2007
Quarterly Report for period ending 2007-09-30
10-Q
Monday, 7/30/2007
Quarterly Report for period ending 2007-06-30
10-Q
Monday, 4/30/2007
Quarterly Report for period ending 2007-03-31
10-K
Tuesday, 2/27/2007
Annual Report for period ending 2006-12-31
10-Q
Monday, 10/30/2006
Quarterly Report for period ending 2006-09-30
10-Q
Friday, 8/4/2006
Quarterly Report for period ending 2006-06-30
10-Q
Monday, 5/1/2006
Quarterly Report for period ending 2006-03-31
10-K
Tuesday, 2/28/2006
Annual Report for period ending 2005-12-31
10-Q
Monday, 10/31/2005
Quarterly Report for period ending 2005-09-30
10-Q
Monday, 8/1/2005
Quarterly Report for period ending 2005-06-30
10-Q
Monday, 5/2/2005
Quarterly Report for period ending 2005-03-31
10-K
Friday, 3/4/2005
Annual Report for period ending 2004-12-31
10-Q
Monday, 11/8/2004
Quarterly Report for period ending 2004-09-30
10-Q
Thursday, 8/5/2004
Quarterly Report for period ending 2004-06-30
10-Q
Thursday, 5/6/2004
Quarterly Report for period ending 2004-03-31
10-K
Wednesday, 3/17/2004
Annual Report for period ending 2003-12-31
10-Q
Thursday, 11/13/2003
Quarterly Report for period ending 2003-09-30
10-Q
Thursday, 8/14/2003
Quarterly Report for period ending 2003-06-30
10-Q
Thursday, 5/15/2003
Quarterly Report for period ending 2003-03-31
10-K
Wednesday, 2/26/2003
Annual Report for period ending 2002-12-31
10-Q
Thursday, 11/14/2002
Quarterly Report for period ending 2002-09-30
10-Q/A
Friday, 8/23/2002
Quarterly Report for period ending 2002-06-30
10-Q/A
Wednesday, 8/21/2002
Quarterly Report for period ending 2002-06-30
10-Q
Wednesday, 8/14/2002
Quarterly Report for period ending 2002-06-30
10-Q
Wednesday, 5/15/2002
Quarterly Report for period ending 2002-03-31
10-K
Monday, 4/1/2002
Annual Report for period ending 2001-12-31
10-Q
Wednesday, 11/14/2001
Quarterly Report for period ending 2001-09-30
10-Q
Tuesday, 8/14/2001
Quarterly Report for period ending 2001-06-30
10-Q
Tuesday, 5/15/2001
Quarterly Report for period ending 2001-03-31
10-Q/A
Friday, 4/6/2001
Quarterly Report for period ending 2000-09-30
10-K
Wednesday, 3/28/2001
Annual Report for period ending 2000-12-31
10-K
Wednesday, 3/28/2001
Annual Report for period ending 2000-12-31
10-Q
Tuesday, 11/14/2000
Quarterly Report for period ending 2000-09-30
10-Q
Thursday, 8/10/2000
Quarterly Report for period ending 2000-06-30
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News (118)

8-K
Thursday, 1/25/2024
Current report filing
8-K
Monday, 11/13/2023
Current report filing
8-K
Friday, 10/27/2023
Current report filing
8-K
Friday, 9/1/2023
Current report filing
8-K
Thursday, 7/27/2023
Current report filing
8-K
Wednesday, 5/10/2023
Current report filing
8-K
Thursday, 4/27/2023
Current report filing
8-K
Thursday, 1/26/2023
Current report filing
8-K
Thursday, 10/27/2022
Current report filing
8-K
Wednesday, 9/21/2022
Current report filing
8-K
Thursday, 7/28/2022
Current report filing
8-K
Friday, 7/15/2022
Current report filing
8-K
Thursday, 4/28/2022
Current report filing
8-K
Thursday, 1/27/2022
Current report filing
8-K
Thursday, 11/18/2021
Current report filing
8-K
Thursday, 10/28/2021
Current report filing
8-K
Tuesday, 7/20/2021
Current report filing
8-K
Friday, 7/2/2021
Current report filing
8-K
Thursday, 4/29/2021
Current report filing
8-K
Thursday, 1/28/2021
Current report filing
8-K
Thursday, 10/29/2020
Current report filing
8-K
Thursday, 7/30/2020
Current report filing
8-K
Tuesday, 5/26/2020
Current report filing
8-K
Thursday, 5/7/2020
Current report filing
8-K
Thursday, 1/30/2020
Current report filing
8-K
Thursday, 10/24/2019
Current report filing
8-K
Thursday, 8/1/2019
Current report filing
8-K
Monday, 6/10/2019
Current report filing
8-K
Thursday, 5/23/2019
Current report filing
8-K
Thursday, 4/25/2019
Current report filing
8-K
Thursday, 1/31/2019
Current report filing
8-K
Thursday, 10/25/2018
Current report filing
8-K
Wednesday, 9/12/2018
Current report filing
8-K
Thursday, 7/26/2018
Current report filing
8-K
Thursday, 4/26/2018
Current report filing
8-K
Wednesday, 2/7/2018
Current report filing
8-K
Friday, 12/22/2017
Current report filing
8-K
Monday, 12/4/2017
Current report filing
8-K
Thursday, 10/26/2017
Current report filing
8-K
Friday, 9/15/2017
Current report filing
8-K
Thursday, 7/27/2017
Current report filing
8-K
Friday, 5/5/2017
Current report filing
8-K
Thursday, 4/27/2017
Current report filing
8-K
Thursday, 2/2/2017
Current report filing
8-K
Thursday, 10/27/2016
Current report filing
8-K
Tuesday, 8/16/2016
Current report filing
8-K
Wednesday, 8/3/2016
Current report filing
8-K
Wednesday, 6/22/2016
Current report filing
8-K
Monday, 5/9/2016
Current report filing
8-K
Friday, 4/1/2016
Current report filing
8-K
Thursday, 1/28/2016
Current report filing
8-K
Friday, 12/4/2015
Current report filing
8-K
Thursday, 10/29/2015
Current report filing
8-K
Monday, 10/5/2015
Current report filing
8-K
Thursday, 7/30/2015
Current report filing
8-K
Monday, 6/29/2015
Current report filing
8-K
Friday, 5/29/2015
Current report filing
8-K
Thursday, 4/30/2015
Current report filing
8-K
Thursday, 1/29/2015
Current report filing
8-K
Thursday, 10/30/2014
Current report filing
8-K
Friday, 10/17/2014
Current report filing
8-K
Monday, 10/6/2014
Current report filing
8-K
Thursday, 7/31/2014
Current report filing
8-K
Monday, 6/23/2014
Current report filing
8-K
Friday, 5/30/2014
Current report filing
8-K
Thursday, 5/1/2014
Current report filing
8-K
Thursday, 1/30/2014
Current report filing
8-K
Thursday, 12/12/2013
Current report filing
8-K
Thursday, 10/24/2013
Current report filing
8-K
Monday, 10/7/2013
Current report filing
8-K
Thursday, 8/1/2013
Current report filing
8-K
Friday, 5/31/2013
Current report filing
8-K
Thursday, 5/2/2013
Current report filing
8-K
Thursday, 1/31/2013
Current report filing
8-K
Wednesday, 12/19/2012
Current report filing
8-K
Thursday, 10/25/2012
Current report filing
8-K
Wednesday, 10/10/2012
Current report filing
8-K
Thursday, 8/2/2012
Current report filing
8-K
Thursday, 8/2/2012
Current report filing
8-K
Thursday, 6/21/2012
Current report filing
8-K
Monday, 6/4/2012
Current report filing
8-K
Thursday, 4/26/2012
Current report filing
8-K
Thursday, 2/2/2012
Current report filing
8-K
Friday, 12/16/2011
Current report filing
8-K
Thursday, 10/27/2011
Current report filing
8-K
Thursday, 10/13/2011
Current report filing
8-K
Thursday, 7/28/2011
Current report filing
8-K
Tuesday, 6/21/2011
Current report filing
8-K
Thursday, 6/2/2011
Current report filing
8-K
Thursday, 4/28/2011
Current report filing
8-K
Wednesday, 3/23/2011
Current report filing
8-K
Thursday, 1/27/2011
Current report filing
8-K
Friday, 11/12/2010
Current report filing
8-K
Thursday, 10/28/2010
Current report filing
8-K
Tuesday, 8/3/2010
Current report filing
8-K
Thursday, 7/29/2010
Current report filing
8-K
Thursday, 4/29/2010
Current report filing
8-K
Wednesday, 3/31/2010
Current report filing
8-K
Thursday, 1/28/2010
Current report filing
8-K
Thursday, 12/17/2009
Current report filing
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Other (5)

EFFECT
Tuesday, 1/7/2014
Notice of Effectiveness
EFFECT
Wednesday, 7/11/2012
Notice of Effectiveness
EFFECT
Wednesday, 7/2/2008
Notice of Effectiveness
CORRESP
Friday, 5/12/2006
A correspondence can be sent as a document with another submission type or can be sent as a separate submission.
POS AM
Thursday, 3/18/2004
Post-effective amendment to a registration statement that is not immediately effective upon filing
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Prospectus (33)

S-3ASR
Thursday, 4/22/2021
Automatic shelf registration statement of securities of well-known seasoned issuers
424B2
Tuesday, 5/19/2020
Prospectus filed pursuant to Rule 424(b)(2)
FWP
Monday, 5/18/2020
Filing under Securities Act Rules 163/433 of free writing prospectuses
424B5
Monday, 5/18/2020
Prospectus filed pursuant to Rule 424(b)(5)
424B2
Thursday, 9/6/2018
Prospectus filed pursuant to Rule 424(b)(2)
424B5
Wednesday, 9/5/2018
Prospectus filed pursuant to Rule 424(b)(5)
FWP
Wednesday, 9/5/2018
Filing under Securities Act Rules 163/433 of free writing prospectuses
S-3ASR
Wednesday, 4/18/2018
Automatic shelf registration statement of securities of well-known seasoned issuers
424B2
Tuesday, 11/28/2017
Prospectus filed pursuant to Rule 424(b)(2)
FWP
Monday, 11/27/2017
Filing under Securities Act Rules 163/433 of free writing prospectuses
424B5
Monday, 11/27/2017
Prospectus filed pursuant to Rule 424(b)(5)
424B2
Tuesday, 6/23/2015
Prospectus filed pursuant to Rule 424(b)(2)
424B5
Monday, 6/22/2015
Prospectus filed pursuant to Rule 424(b)(5)
FWP
Monday, 6/22/2015
Filing under Securities Act Rules 163/433 of free writing prospectuses
S-3ASR
Monday, 4/27/2015
Automatic shelf registration statement of securities of well-known seasoned issuers
424B2
Tuesday, 6/17/2014
Prospectus filed pursuant to Rule 424(b)(2)
424B5
Monday, 6/16/2014
Prospectus filed pursuant to Rule 424(b)(5)
FWP
Monday, 6/16/2014
Filing under Securities Act Rules 163/433 of free writing prospectuses
S-3
Friday, 12/13/2013
Registration statement for specified transactions by certain issuers
424B2
Wednesday, 10/3/2012
Prospectus filed pursuant to Rule 424(b)(2)
424B5
Tuesday, 10/2/2012
Prospectus filed pursuant to Rule 424(b)(5)
FWP
Tuesday, 10/2/2012
Filing under Securities Act Rules 163/433 of free writing prospectuses
S-3
Thursday, 6/28/2012
Registration statement for specified transactions by certain issuers
424B2
Friday, 9/5/2008
Prospectus filed pursuant to Rule 424(b)(2)
424B5
Wednesday, 9/3/2008
Prospectus filed pursuant to Rule 424(b)(5)
FWP
Wednesday, 9/3/2008
Filing under Securities Act Rules 163/433 of free writing prospectuses
S-3
Tuesday, 6/24/2008
Registration statement for specified transactions by certain issuers
424B3
Monday, 2/9/2004
Prospectus filed pursuant to Rule 424(b)(3)
S-4/A
Tuesday, 2/3/2004
Registration of securities issued in business combination transactions
S-4
Wednesday, 1/21/2004
Registration of securities issued in business combination transactions
424B5
Wednesday, 9/27/2000
Prospectus filed pursuant to Rule 424(b)(5)
S-3
Monday, 8/16/1999
Registration statement for specified transactions by certain issuers
424B5
Friday, 12/13/1996
Prospectus filed pursuant to Rule 424(b)(5)
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