What changed in this filing

/stocks — the workspaceLOADING

Item 2. Properties

2024-02-21 compared with 2023-02-23 · 55 added, 40 removed, 81 unchanged (54% of the section changed)

7 unchanged sentences

Unit 1 Coal 1976 680

Unit 2 Coal 1977 682

Unit 2 Coal 1977 682 (b)

Unit 3 Coal 1987 517 (c)

Monticello, MN, 1 Unit Nuclear 1971 617

1 unchanged sentence

Unit 2 Nuclear 1974 519

Various locations, 4 Units Wood/Refuse Various 36 (c)

Various locations, 4 Units Wood/RDF Various 36 (d)

Combustion Turbine:

1 unchanged sentence

Black Dog-Burnsville, MN, 3 Units Natural Gas 1987 - 2018 491

Blue Lake-Shakopee, MN, 6 Units Natural Gas 1974 - 2005 447

Blue Lake-Shakopee, MN, 6 Units Natural Gas/Oil 1974 - 2005 454

High Bridge-St.

Paul, MN, 3 Units Natural Gas 2008 530

Inver Hills-Inver Grove Heights, MN, 6 Units Natural Gas 1972 252

Inver Hills-Inver Grove Heights, MN, 8 Units Natural Gas/ Oil 1972 - 1996 276

Riverside-Minneapolis, MN, 3 Units Natural Gas 2009 454

Various locations, 7 Units Natural Gas Various 10

Blazing Star 1-Lincoln County, MN, 100 Units Wind 2020 200 (d)

Blazing Star 2-Lincoln County, MN, 100 Units Wind 2021 200 (d)

Border-Rolette County, ND, 75 Units Wind 2015 148 (d)

Community Wind North-Lincoln County, MN, 12 Units Wind 2020 26 (d)

Courtenay Wind-Stutsman County, ND, 100 Units Wind 2016 190 (d)

Crowned Ridge 2-Grant County, SD, 88 Units Wind 2020 192 (d)

Dakota Range, SD, 72 Units Wind 2022 298 (d)

Foxtail-Dickey County, ND, 75 Units Wind 2019 150 (d)

Freeborn-Freeborn County, MN, 100 Units Wind 2021 200 (d)

Grand Meadow-Mower County, MN, 67 Units Wind 2008 99 (d)

Jeffers-Cottonwood County, MN, 20 Units Wind 2020 43 (d)

Lake Benton-Pipestone County, MN, 44 Units Wind 2019 99 (d)

Mower-Mower County, MN, 43 Units Wind 2021 91 (d)

Nobles-Nobles County, MN, 133 Units (e)

Wind 2010 200 (d)

Pleasant Valley-Mower County, MN, 100 Units Wind 2015 196 (d)

Rock Aetna - Murray County, MN, 8 Units Wind 2022 20 (d)

(a) Su mmer 2022 net dependable capacity.

(b) Based on NSP-Minnesota’s ownership of 59%.

(d) Capacity is attainable only when wind conditions are sufficiently available.

(e) Repowered in 2022.

Hennepin Island-Minneapolis, MN 5 Units Hydro 1954-1955 6

Blazing Star 1-Lincoln County, MN, 100 Units Wind 2020 200 (e)

Blazing Star 2-Lincoln County, MN, 100 Units Wind 2021 200 (e)

Border-Rolette County, ND, 75 Units Wind 2015 148 (e)

Community Wind North-Lincoln County, MN, 12 Units Wind 2020 26 (e)

Courtenay Wind-Stutsman County, ND, 100 Units Wind 2016 190 (e)

Crowned Ridge 2-Grant County, SD, 88 Units Wind 2020 192 (e)

Dakota Range, SD, 72 Units Wind 2022 298 (e)

Foxtail-Dickey County, ND, 75 Units Wind 2019 150 (e)

Freeborn-Freeborn County, MN, 100 Units Wind 2021 200 (e)

Grand Meadow-Mower County, MN, 67 Units (f)

Wind 2008 99 (e)

Jeffers-Cottonwood County, MN, 20 Units Wind 2020 43 (e)

Lake Benton-Pipestone County, MN, 44 Units Wind 2019 99 (e)

Mower-Mower County, MN, 43 Units Wind 2021 91 (e)

Nobles-Nobles County, MN, 133 Units Wind 2010 200 (e)

Northern Wind-Murray County, MN, 37 Units (g)

Wind 2023 92 (e)

Pleasant Valley-Mower County, MN, 100 Units Wind 2015 196 (e)

Rock Aetna - Murray County, MN, 8 Units Wind 2022 20 (e)

(a) Summer 2023 net dependable capacity.

Wind is presented as net maximum capacity.

(b) Retired on Dec.

(d) RDF is made from municipal solid waste.

(e) Net maximum capacity is attainable only when wind conditions are sufficiently available.

Typical average capacity factors are 35-50% for wind facilities.

For the year ended Dec.

31, 2023, NSP-Minnesota’s wind facilities had a weighted-average capacity factors of 43%.

(f) Repowered in 2023.

(g) Purchased in 2023.

NSP-Wisconsin

2 unchanged sentences

Bay Front-Ashland, WI, 2 Units Wood/Natural Gas 1948 - 1956 41

French Island-La Crosse, WI, 2 Units Wood/Refuse 1940 - 1948 16 (b)

French Island-La Crosse, WI, 2 Units Wood/RDF 1940 - 1948 16 (b)

Combustion Turbine:

3 unchanged sentences

(a) Summer 2023 net dependable capacity.

(b) Refuse-derived fuel is made from municipal solid waste.

(b) RDF is made from municipal solid waste.

Station, Location and Unit at Dec.

12 unchanged sentences

Vrain-Platteville, CO, 6 Units Natural Gas 1972 - 2009 1,022

Manchief, CO, 2 Units (e)

Natural Gas 2000 250

Manchief, CO, 2 Units Natural Gas 2000 250

Rocky Mountain-Keenesburg, CO, 3 Units Natural Gas 2004 592

3 unchanged sentences

Various locations, 6 Units Hydro Various 23

Rush Creek, CO, 300 units Wind 2018 582 (f)

Cheyenne Ridge, CO, 229 units Wind 2020 477 (f)

Rush Creek, CO, 300 units Wind 2018 582 (e)

Cheyenne Ridge, CO, 229 units Wind 2020 477 (e)

(a) Summer 2023 net dependable capacity.

Wind is presented as net maximum capacity.

(b) Based on PSCo’s ownership of 67%.

1 unchanged sentence

(d) Based on PSCo’s ownership of 76% of Unit 1 and 37% of Unit 2.

(e) Purchased in 2022.

(f) Capacity is attainable only when wind conditions are sufficiently available.

(e) Net maximum capacity is attainable only when wind conditions are sufficiently available.

Typical average capacity factors are 35-50% for wind facilities.

For the year ended Dec.

31, 2023, PSCo’s wind facilities had a weighted-average capacity factors of 43%.

Station, Location and Unit at Dec.

Fuel Installed MW (a)

Cunningham-Hobbs, NM, 2 Units Natural Gas 1957 - 1965 225

Cunningham-Hobbs, NM, 1 Unit Natural Gas 1957 - 1965 183 (b)

Harrington-Amarillo, TX, 3 Units Coal 1976 - 1980 1,018

2 unchanged sentences

Nichols-Amarillo, TX, 3 Units Natural Gas 1960 - 1968 457

Plant X-Earth, TX, 3 Units Natural Gas 1952 - 1964 298

Plant X-Earth, TX, 1 Unit Natural Gas 1952 - 1964 190 (b)

Tolk-Muleshoe, TX, 2 Units Coal 1982 - 1985 1,067

3 unchanged sentences

Maddox-Hobbs, NM, 1 Unit Natural Gas 1963 - 1976 61

Hale-Plainview, TX, 239 Units Wind 2019 477 (b)

Sagamore-Dora, NM, 240 Units Wind 2020 507 (b)

Hale-Plainview, TX, 239 Units Wind 2019 478 (c)

Sagamore-Dora, NM, 240 Units Wind 2020 507 (c)

(a) Summer 2023 net dependable capacity.

(b) Capacity is attainable only when wind conditions are sufficiently available.

Wind is presented as net maximum capacity.

(b) Retired unit(s) in 2023.

Typical average capacity factors are 35-50% for wind facilities.

For the year ended Dec.

31, 2023 SPS’ wind facilities had a weighted-average capacity factors of 48%.

Electric utility overhead and underground transmis sion and distribution lines at Dec.

18 unchanged sentences

Compared sentence by sentence after normalising whitespace, quotation marks, case and digits, so re-formatting and restated figures do not read as changed language. Wording changes appear as one removal and one addition. The current filing and the prior one are authoritative.

What changed 10-K

Item 2. Properties