Northern States Power Co

Entity
Company
Industry
Electric & Other Services Combined (Office Of Energy & Transportation)
Business address
414 Nicollet Mall, 55401 Minneapolis, MN
Phone
6123305500
State of incorporation
MN
Fiscal year end
December 31
Category
Non-accelerated filer
All SEC filings
View on sec.gov
Northern States Power Co has filed 385 SEC EDGAR filings since 10/5/2000

Latest Filings

Form type Document Filing Description Filing date Reporting date File number(s)
8-K Open Document | Data Open Filing 8-K Aug 25, 2025 Aug 22, 2025 001-31387
10-Q Open Document | Data Open Filing 10-Q Jul 31, 2025 Jun 30, 2025 001-31387
8-K Open Document | Data Open Filing 8-K Jul 31, 2025 Jul 31, 2025 001-31387
8-K Open Document | Data Open Filing 8-K Jun 30, 2025 Jun 30, 2025 001-31387
8-K Open Document | Data Open Filing 8-K May 7, 2025 May 6, 2025 001-31387
8-K Open Document | Data Open Filing 8-K May 5, 2025 May 5, 2025 001-31387
424B2 Open Document Open Filing 424B2 Apr 30, 2025 333-278797-04
FWP Open Document Open Filing FWP Apr 28, 2025 333-278797-04
424B5 Open Document Open Filing 424B5 Apr 28, 2025 333-278797-04
10-Q Open Document | Data Open Filing 10-Q Apr 24, 2025 Mar 31, 2025 001-31387
8-K Open Document | Data Open Filing 8-K Apr 24, 2025 Apr 24, 2025 001-31387
10-K Open Document | Data Open Filing 10-K Feb 27, 2025 Dec 31, 2024 001-31387
8-K Open Document | Data Open Filing 8-K Feb 21, 2025 Feb 20, 2025 001-31387
8-K Open Document | Data Open Filing 8-K Feb 6, 2025 Feb 6, 2025 001-31387
8-K Open Document | Data Open Filing 8-K Dec 2, 2024 Dec 2, 2024 001-31387
10-Q Open Document | Data Open Filing 10-Q Oct 31, 2024 Sep 30, 2024 001-31387
8-K Open Document | Data Open Filing 8-K Oct 31, 2024 Oct 31, 2024 001-31387
10-Q Open Document | Data Open Filing 10-Q Aug 1, 2024 Jun 30, 2024 001-31387
8-K Open Document | Data Open Filing 8-K Aug 1, 2024 Aug 1, 2024 001-31387
8-K Open Document | Data Open Filing 8-K Jun 26, 2024 Jun 26, 2024 001-31387
10-Q Open Document | Data Open Filing 10-Q Apr 25, 2024 Mar 31, 2024 001-31387
8-K Open Document | Data Open Filing 8-K Apr 25, 2024 Apr 25, 2024 001-31387
S-3ASR Open Document Open Filing FORM S-3ASR Apr 18, 2024 333-278797-04
8-K Open Document | Data Open Filing 8-K Feb 29, 2024 Feb 29, 2024 001-31387
424B2 Open Document Open Filing 424B2 Feb 23, 2024 333-255446-04
FWP Open Document Open Filing FWP Feb 22, 2024 333-255446-04
424B5 Open Document Open Filing 424B5 Feb 22, 2024 333-255446-04
10-K Open Document | Data Open Filing 10-K Feb 21, 2024 Dec 31, 2023 001-31387
8-K Open Document | Data Open Filing 8-K Jan 25, 2024 Jan 25, 2024 001-31387
8-K Open Document | Data Open Filing 8-K Nov 1, 2023 Nov 1, 2023 001-31387
10-Q Open Document | Data Open Filing 10-Q Oct 27, 2023 Sep 30, 2023 001-31387
8-K Open Document | Data Open Filing 8-K Oct 27, 2023 Oct 27, 2023 001-31387
10-Q Open Document | Data Open Filing 10-Q Jul 27, 2023 Jun 30, 2023 001-31387
8-K Open Document | Data Open Filing 8-K Jul 27, 2023 Jul 27, 2023 001-31387
8-K Open Document | Data Open Filing 8-K Jun 5, 2023 Jun 1, 2023 001-31387
8-K Open Document | Data Open Filing 8-K May 26, 2023 May 24, 2023 001-31387
8-K Open Document | Data Open Filing 8-K May 8, 2023 May 8, 2023 001-31387
424B2 Open Document Open Filing 424B2 May 2, 2023 333-255446-04
FWP Open Document Open Filing FWP May 1, 2023 333-255446-04
424B5 Open Document Open Filing 424B5 May 1, 2023 333-255446-04
10-Q Open Document | Data Open Filing 10-Q Apr 27, 2023 Mar 31, 2023 001-31387
8-K Open Document | Data Open Filing 8-K Apr 27, 2023 Apr 27, 2023 001-31387
8-K Open Document | Data Open Filing 8-K Apr 4, 2023 Mar 31, 2023 001-31387
10-K Open Document | Data Open Filing 10-K Feb 23, 2023 Dec 31, 2022 001-31387
8-K Open Document | Data Open Filing 8-K Jan 26, 2023 Jan 26, 2023 001-31387
10-Q Open Document | Data Open Filing 10-Q Oct 27, 2022 Sep 30, 2022 001-31387
8-K Open Document | Data Open Filing 8-K Oct 27, 2022 Oct 27, 2022 001-31387
8-K Open Document | Data Open Filing 8-K Oct 5, 2022 Oct 3, 2022 001-31387
8-K Open Document | Data Open Filing 8-K Sep 21, 2022 Sep 19, 2022 001-31387
8-K Open Document | Data Open Filing 8-K Sep 1, 2022 Aug 30, 2022 001-31387
10-Q Open Document | Data Open Filing 10-Q Jul 28, 2022 Jun 30, 2022 001-31387
8-K Open Document | Data Open Filing 8-K Jul 28, 2022 Jul 28, 2022 001-31387
8-K Open Document | Data Open Filing 8-K Jul 1, 2022 Jun 30, 2022 001-31387
8-K Open Document | Data Open Filing 8-K May 9, 2022 May 9, 2022 001-31387
424B2 Open Document Open Filing 424B2 May 3, 2022 333-255446-04
FWP Open Document Open Filing FWP May 2, 2022 333-255446-04
424B5 Open Document Open Filing 424B5 May 2, 2022 333-255446-04
10-Q Open Document | Data Open Filing 10-Q Apr 28, 2022 Mar 31, 2022 001-31387
8-K Open Document | Data Open Filing 8-K Apr 28, 2022 Apr 28, 2022 001-31387
10-K Open Document | Data Open Filing 10-K Feb 23, 2022 Dec 31, 2021 001-31387
8-K Open Document | Data Open Filing 8-K Jan 27, 2022 Jan 27, 2022 001-31387
8-K Open Document | Data Open Filing 8-K Dec 23, 2021 Dec 21, 2021 001-31387
8-K Open Document | Data Open Filing 8-K Dec 10, 2021 Dec 9, 2021 001-31387
8-K Open Document | Data Open Filing 8-K Nov 1, 2021 Nov 1, 2021 001-31387
10-Q Open Document | Data Open Filing 10-Q Oct 28, 2021 Sep 30, 2021 001-31387
8-K Open Document | Data Open Filing 8-K Oct 28, 2021 Oct 28, 2021 001-31387
8-K Open Document | Data Open Filing 8-K Oct 25, 2021 Oct 25, 2021 001-31387
10-Q Open Document | Data Open Filing 10-Q Jul 29, 2021 Jun 30, 2021 001-31387
8-K Open Document | Data Open Filing 8-K Jul 2, 2021 Jul 1, 2021 001-31387
10-Q Open Document | Data Open Filing 10-Q Apr 29, 2021 Mar 31, 2021 001-31387
8-K Open Document | Data Open Filing 8-K Apr 29, 2021 Apr 29, 2021 001-31387
S-3ASR Open Document Open Filing FORM S-3ASR Apr 22, 2021 333-255446-04
8-K Open Document | Data Open Filing 8-K Mar 30, 2021 Mar 30, 2021 001-31387
424B2 Open Document Open Filing 424B2 Mar 24, 2021 333-224333-04
FWP Open Document Open Filing FWP Mar 23, 2021 333-224333-04
424B5 Open Document Open Filing 424B5 Mar 23, 2021 333-224333-04
10-K Open Document | Data Open Filing 10-K Feb 17, 2021 Dec 31, 2020 001-31387
8-K Open Document | Data Open Filing 8-K Jan 28, 2021 Jan 28, 2021 001-31387
8-K Open Document | Data Open Filing 8-K Dec 28, 2020 Dec 23, 2020 001-31387
8-K Open Document | Data Open Filing 8-K Dec 18, 2020 Dec 17, 2020 001-31387
8-K Open Document | Data Open Filing 8-K Nov 9, 2020 Nov 6, 2020 001-31387
8-K Open Document | Data Open Filing 8-K Nov 2, 2020 Nov 2, 2020 001-31387
10-Q Open Document | Data Open Filing 10-Q Oct 29, 2020 Sep 30, 2020 001-31387
8-K Open Document | Data Open Filing 8-K Oct 29, 2020 Oct 29, 2020 001-31387
10-Q Open Document | Data Open Filing 10-Q Jul 31, 2020 Jun 30, 2020 001-31387
8-K Open Document | Data Open Filing 8-K Jul 30, 2020 Jul 30, 2020 001-31387
8-K Open Document | Data Open Filing 8-K Jun 15, 2020 Jun 15, 2020 001-31387
424B2 Open Document Open Filing 424B2 Jun 9, 2020 333-224333-04
FWP Open Document Open Filing FWP Jun 8, 2020 333-224333-04
424B5 Open Document Open Filing 424B5 Jun 8, 2020 333-224333-04
10-Q Open Document | Data Open Filing 10-Q May 7, 2020 Mar 31, 2020 001-31387
8-K Open Document | Data Open Filing 8-K May 7, 2020 May 7, 2020 001-31387
10-K Open Document | Data Open Filing 10-K Feb 21, 2020 Dec 31, 2019 001-31387
8-K Open Document | Data Open Filing 8-K Jan 30, 2020 Jan 30, 2020 001-31387
8-K Open Document | Data Open Filing 8-K Nov 1, 2019 Oct 31, 2019 001-31387
10-Q Open Document | Data Open Filing 10-Q Oct 25, 2019 Sep 30, 2019 001-31387
8-K Open Document | Data Open Filing 8-K Oct 24, 2019 Oct 24, 2019 001-31387
8-K Open Document | Data Open Filing 8-K Sep 30, 2019 Sep 27, 2019 001-31387
8-K Open Document | Data Open Filing 8-K Sep 10, 2019 Sep 10, 2019 001-31387
424B2 Open Document Open Filing 424B2 Sep 4, 2019 333-224333-04
FWP Open Document Open Filing FWP Sep 3, 2019 333-224333-04
424B5 Open Document Open Filing 424B5 Sep 3, 2019 333-224333-04
8-K Open Document | Data Open Filing 8-K Aug 30, 2019 Aug 30, 2019 001-31387
10-Q Open Document | Data Open Filing 10-Q Aug 1, 2019 Jun 30, 2019 001-31387
8-K Open Document | Data Open Filing 8-K Aug 1, 2019 Aug 1, 2019 001-31387
8-K Open Document Open Filing 8-K Jun 10, 2019 Jun 7, 2019 001-31387
10-Q Open Document | Data Open Filing 10-Q Apr 26, 2019 Mar 31, 2019 001-31387
8-K Open Document Open Filing 8-K Apr 25, 2019 Apr 25, 2019 001-31387
10-K Open Document | Data Open Filing 10-K Feb 22, 2019 Dec 31, 2018 001-31387
8-K Open Document Open Filing 8-K Jan 31, 2019 Jan 31, 2019 001-31387
8-K Open Document Open Filing 8-K Nov 6, 2018 Nov 6, 2018 001-31387
10-Q Open Document | Data Open Filing 10-Q Oct 26, 2018 Sep 30, 2018 001-31387
8-K Open Document Open Filing 8-K Oct 25, 2018 Oct 25, 2018 001-31387
10-Q Open Document | Data Open Filing 10-Q Jul 27, 2018 Jun 30, 2018 001-31387
8-K Open Document Open Filing 8-K Jul 26, 2018 Jul 26, 2018 001-31387
10-Q Open Document | Data Open Filing 10-Q Apr 27, 2018 Mar 31, 2018 001-31387
8-K Open Document Open Filing 8-K Apr 26, 2018 Apr 26, 2018 001-31387
S-3ASR Open Document Open Filing FORM S-3ASR Apr 18, 2018 333-224333-04
10-K Open Document | Data Open Filing 10-K Feb 26, 2018 Dec 31, 2017 001-31387
8-K Open Document Open Filing 8-K Feb 7, 2018 Feb 7, 2018 001-31387
10-Q Open Document | Data Open Filing 10-Q Oct 27, 2017 Sep 30, 2017 001-31387
8-K Open Document Open Filing 8-K Oct 26, 2017 Oct 26, 2017 001-31387
8-K Open Document Open Filing 8-K Sep 13, 2017 Sep 13, 2017 001-31387
424B2 Open Document Open Filing DEFINITIVE PROSPECTUS SUPPLEMENT Sep 8, 2017 333-203664-01
FWP Open Document Open Filing FWP Sep 6, 2017 333-203664-01
424B5 Open Document Open Filing PRELIMINARY PROSPECTUS SUPPLEMENT Sep 6, 2017 333-203664-01
10-Q Open Document | Data Open Filing 10-Q Jul 28, 2017 Jun 30, 2017 001-31387
8-K Open Document | Data Open Filing 8-K Jul 27, 2017 Jul 27, 2017 001-31387
8-K Open Document Open Filing 8-K May 12, 2017 May 12, 2017 001-31387
10-Q Open Document | Data Open Filing 10-Q Apr 28, 2017 Mar 31, 2017 001-31387
8-K Open Document Open Filing 8-K Apr 27, 2017 Apr 27, 2017 001-31387
8-K Open Document Open Filing 8-K Mar 3, 2017 Mar 3, 2017 001-31387
10-K Open Document | Data Open Filing 10-K Feb 24, 2017 Dec 31, 2016 001-31387
8-K Open Document Open Filing 8-K Feb 2, 2017 Feb 2, 2017 001-31387
10-Q Open Document | Data Open Filing 10-Q Oct 31, 2016 Sep 30, 2016 001-31387
8-K Open Document Open Filing 8-K Oct 27, 2016 Oct 27, 2016 001-31387
8-K Open Document Open Filing 8-K Aug 16, 2016 Aug 16, 2016 001-31387
10-Q Open Document | Data Open Filing 10-Q Aug 4, 2016 Jun 30, 2016 001-31387
8-K Open Document Open Filing 8-K Aug 3, 2016 Aug 3, 2016 001-31387
8-K Open Document Open Filing 8-K Jun 22, 2016 Jun 22, 2016 001-31387
8-K Open Document Open Filing 8-K Jun 17, 2016 Jun 17, 2016 001-31387
8-K Open Document Open Filing 8-K May 31, 2016 May 31, 2016 001-31387
424B2 Open Document Open Filing DEFINITIVE PROSPECTUS SUPPLEMENT May 24, 2016 333-203664-01
FWP Open Document Open Filing FWP May 23, 2016 333-203664-01
424B5 Open Document Open Filing PRELIMINARY PROSPECTUS SUPPLEMENT May 23, 2016 333-203664-01
10-Q Open Document | Data Open Filing 10-Q May 13, 2016 Mar 31, 2016 001-31387
8-K Open Document | Data Open Filing 8-K May 9, 2016 May 9, 2016 001-31387
10-K Open Document | Data Open Filing 10-K Feb 22, 2016 Dec 31, 2015 001-31387
8-K Open Document Open Filing 8-K Jan 28, 2016 Jan 28, 2016 001-31387
8-K Open Document Open Filing 8-K Nov 2, 2015 Nov 2, 2015 001-31387
10-Q Open Document | Data Open Filing 10-Q Oct 30, 2015 Sep 30, 2015 001-31387
8-K Open Document Open Filing 8-K Oct 29, 2015 Oct 29, 2015 001-31387
8-K Open Document Open Filing 8-K Oct 5, 2015 Oct 2, 2015 001-31387
8-K Open Document Open Filing 8-K Aug 11, 2015 Aug 11, 2015 001-31387
424B2 Open Document Open Filing DEFINITIVE PROSPECTUS SUPPLEMENT Aug 5, 2015 333-203664-01
FWP Open Document Open Filing FREE WRITING PROSPECTUS Aug 4, 2015 333-203664-01
424B5 Open Document Open Filing PRELIMINARY PROSPECTUS SUPPLEMENT Aug 4, 2015 333-203664-01
10-Q Open Document | Data Open Filing 10-Q Aug 3, 2015 Jun 30, 2015 001-31387
8-K Open Document Open Filing 8-K Jul 30, 2015 Jul 30, 2015 001-31387
8-K Open Document Open Filing 8-K Jul 13, 2015 Jul 9, 2015 001-31387
8-K Open Document Open Filing 8-K Jun 15, 2015 Jun 15, 2015 001-31387
10-Q Open Document | Data Open Filing 10-Q May 4, 2015 Mar 31, 2015 001-31387
8-K Open Document Open Filing 8-K Apr 30, 2015 Apr 30, 2015 001-31387
S-3ASR Open Document Open Filing S-3ASR Apr 27, 2015 333-203664-01
8-K Open Document Open Filing NSPM RATE CASE Mar 30, 2015 Mar 26, 2015 001-31387
8-K Open Document Open Filing 8-K Mar 12, 2015 Mar 6, 2015 001-31387
8-K Open Document Open Filing 8-K Mar 9, 2015 Mar 6, 2015 001-31387
10-K Open Document | Data Open Filing 10-K Feb 20, 2015 Dec 31, 2014 001-31387
8-K Open Document Open Filing NSP MONTI PRUDENCE REVIEW ALJ REPORT Feb 3, 2015 Feb 2, 2015 001-31387
8-K Open Document Open Filing 8-K Jan 29, 2015 Jan 29, 2015 001-31387
8-K Open Document Open Filing 8-K Dec 29, 2014 Dec 26, 2014 001-31387
8-K Open Document Open Filing 8-K Nov 25, 2014 Nov 21, 2014 001-31387
10-Q Open Document | Data Open Filing 10-Q Oct 31, 2014 Sep 30, 2014 001-31387
8-K Open Document Open Filing 8-K Oct 30, 2014 Oct 30, 2014 001-31387
8-K Open Document Open Filing 8-K Oct 17, 2014 Oct 14, 2014 001-31387
8-K Open Document Open Filing 8-K Aug 27, 2014 Aug 26, 2014 001-31387
8-K Open Document Open Filing 8-K Aug 21, 2014 Aug 15, 2014 001-31387
8-K Open Document Open Filing 8-K Aug 5, 2014 Aug 4, 2014 001-31387
10-Q Open Document | Data Open Filing 10-Q Aug 1, 2014 Jun 30, 2014 001-31387
8-K Open Document Open Filing 8-K Jul 31, 2014 Jul 31, 2014 001-31387
8-K Open Document Open Filing 8-K Jul 7, 2014 Jul 7, 2014 001-31387
8-K Open Document Open Filing 8-K Jul 3, 2014 Jul 2, 2014 001-31387
8-K Open Document Open Filing 8-K Jun 23, 2014 Jun 23, 2014 001-31387
8-K Open Document Open Filing 8-K Jun 6, 2014 Jun 5, 2014 001-31387
8-K Open Document Open Filing 8-K May 13, 2014 May 13, 2014 001-31387
424B2 Open Document Open Filing NORTHERN STATES POWER COMPANY MN 424B2 5-6-2014 May 7, 2014 333-192845
FWP Open Document Open Filing NORTHERN STATES POWER COMPANY MN FWP 5-6-2014 May 6, 2014 333-192845
424B5 Open Document Open Filing NORTHERN STATES POWER COMPANY MN 424B5 5-6-2014 May 6, 2014 333-192845
10-Q Open Document | Data Open Filing 10-Q May 5, 2014 Mar 31, 2014 001-31387
8-K Open Document Open Filing 8-K May 1, 2014 May 1, 2014 001-31387
10-K Open Document | Data Open Filing 10-K Feb 24, 2014 Dec 31, 2013 001-31387
8-K Open Document Open Filing 8-K Jan 30, 2014 Jan 30, 2014 001-31387