Item 2. Properties
ITEM 2 — PROPERTIES
Virtually all of the utility plant property of the operating companies is subject to the lien of their respective first mortgage bond indentures.
NSP-Minnesota
Station, Location and Unit at Dec. 31, 2023
Fuel Installed MW (a)
Steam:
A.S. King-Bayport, MN, 1 Unit Coal 1968 511
Sherco-Becker, MN
Unit 1 Coal 1976 680
Unit 2 Coal 1977 682 (b)
Unit 3 Coal 1987 517 (c)
Monticello, MN, 1 Unit Nuclear 1971 617
PI-Welch, MN
Unit 1 Nuclear 1973 521
Unit 2 Nuclear 1974 519
Various locations, 4 Units Wood/RDF Various 36 (d)
Combustion Turbine:
Angus Anson-Sioux Falls, SD, 3 Units Natural Gas 1994 - 2005 343
Black Dog-Burnsville, MN, 3 Units Natural Gas 1987 - 2018 491
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, 8 Units Natural Gas/ Oil 1972 - 1996 276
Riverside-Minneapolis, MN, 3 Units Natural Gas 2009 454
Hydro:
Hennepin Island-Minneapolis, MN 5 Units Hydro 1954-1955 6
Wind:
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)
Total 9,081
(a) Summer 2023 net dependable capacity. Wind is presented as net maximum capacity.
(b) Retired on Dec. 31, 2023.
(c) Based on NSP-Minnesota’s ownership of 59%.
(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
Station, Location and Unit at Dec. 31, 2023
Fuel Installed MW (a)
Steam:
Bay Front-Ashland, WI, 2 Units Wood/Natural Gas 1948 - 1956 41
French Island-La Crosse, WI, 2 Units Wood/RDF 1940 - 1948 16 (b)
Combustion Turbine:
French Island-La Crosse, WI, 2 Units Oil 1974 119
Wheaton-Eau Claire, WI, 5 Units Natural Gas/Oil 1973 240
Hydro:
Various locations, 62 Units Hydro Various 135
Total 551
(a) Summer 2023 net dependable capacity.
(b) RDF is made from municipal solid waste.
PSCo
Station, Location and Unit at Dec. 31, 2023
Fuel Installed MW (a)
Steam:
Comanche-Pueblo, CO
Unit 2 Coal 1975 330
Unit 3 Coal 2010 500 (b)
Craig-Craig, CO, 2 Units Coal 1979 - 1980 82 (c)
Hayden-Hayden, CO, 2 Units
Coal 1965 - 1976 233 (d)
Pawnee-Brush, CO, 1 Unit Coal 1981 505
Cherokee-Denver, CO, 1 Unit Natural Gas 1968 310
Combustion Turbine:
Blue Spruce-Aurora, CO, 2 Units Natural Gas 2003 264
Cherokee-Denver, CO, 3 Units Natural Gas 2015 576
Fort St. Vrain-Platteville, CO, 6 Units Natural Gas 1972 - 2009 1,022
Manchief, CO, 2 Units Natural Gas 2000 250
Rocky Mountain-Keenesburg, CO, 3 Units Natural Gas 2004 592
Various locations, 8 Units Natural Gas Various 247
Hydro:
Cabin Creek-Georgetown, CO
Pumped Storage, 2 Units Hydro 1967 210
Various locations, 6 Units Hydro Various 23
Wind:
Rush Creek, CO, 300 units Wind 2018 582 (e)
Cheyenne Ridge, CO, 229 units Wind 2020 477 (e)
Total 6,203
(a) Summer 2023 net dependable capacity. Wind is presented as net maximum capacity.
(b) Based on PSCo’s ownership of 67%.
(c) Based on PSCo’s ownership of 10%.
(d) Based on PSCo’s ownership of 76% of Unit 1 and 37% of Unit 2.
(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%.
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Table of Contents
SPS
Station, Location and Unit at Dec. 31, 2023
Fuel Installed MW (a)
Steam:
Cunningham-Hobbs, NM, 1 Unit Natural Gas 1957 - 1965 183 (b)
Harrington-Amarillo, TX, 3 Units Coal 1976 - 1980 1,018
Jones-Lubbock, TX, 2 Units Natural Gas 1971 - 1974 486
Maddox-Hobbs, NM, 1 Unit Natural Gas 1967 112
Nichols-Amarillo, TX, 3 Units Natural Gas 1960 - 1968 457
Plant X-Earth, TX, 1 Unit Natural Gas 1952 - 1964 190 (b)
Tolk-Muleshoe, TX, 2 Units Coal 1982 - 1985 1,067
Combustion Turbine:
Cunningham-Hobbs, NM, 2 Units Natural Gas 1997 207
Jones-Lubbock, TX, 2 Units Natural Gas 2011 - 2013 334
Maddox-Hobbs, NM, 1 Unit Natural Gas 1963 - 1976 61
Wind:
Hale-Plainview, TX, 239 Units Wind 2019 478 (c)
Sagamore-Dora, NM, 240 Units Wind 2020 507 (c)
Total 5,100
(a) Summer 2023 net dependable capacity. Wind is presented as net maximum capacity.
(b) Retired unit(s) in 2023.
(c) 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 SPS’ wind facilities had a weighted-average capacity factors of 48%.
Electric utility overhead and underground transmis sion and distribution lines at Dec. 31, 2023:
Conductor Miles NSP-Minnesota NSP-Wisconsin PSCo SPS
Transmission
500 KV 2,916 — — —
345 KV 12,845 3,019 5,421 11,701
230 KV 2,300 — 12,244 9,854
161 KV 626 1,818 — —
138 KV — — 92 —
115 KV 8,071 1,862 4,994 14,896
Less than 115 KV 6,640 5,467 1,782 4,494
Total Transmission 33,398 12,166 24,533 40,945
Distribution
Less than 115 KV 83,854 27,971 80,176 23,965
Total 117,252 40,137 104,709 64,910
Electric utility transmission and distribution substations at Dec. 31, 2023:
NSP-Minnesota NSP-Wisconsin PSCo SPS
Substations 353 201 233 449
Natural gas utility mains at Dec. 31, 2023:
Miles NSP-Minnesota NSP-Wisconsin PSCo SPS WGI
Transmission 78 3 2,024 20 11
Distribution 10,894 2,564 23,494 — —