What is the biggest electric company in Colorado?

Public Service Co of Colorado had the most customers in Colorado in 2025, about 1,605,246.

How do I find which utility serves my address in Colorado?

Open your county page from the Colorado energy overview. It lists the utilities that report serving each county. Your power bill also names your utility.

Checked Oct 26, 2026

Electric Utilities in Colorado

71 utilities reported sales in Colorado for 2025 (EIA Form 861).

Utilities

Customers in this state. Home price and bill are for bundled service (generation and delivery)

Swipe the table sideways to see more columns.

#	Utility	Customers	Home price	Home bill
1	Public Service Co of ColoradoInvestor Owned	1,605,246	15.90¢/kWh	$93/mo
2	City of Colorado Springs - (Co)Municipal	264,106	15.43¢/kWh	$93/mo
3	CORE Electric CooperativeCooperative	182,993	15.62¢/kWh	$132/mo
4	United Power, IncCooperative	115,479	16.50¢/kWh	$131/mo
5	Black Hills Colorado Electric, LLCInvestor Owned	111,502	18.71¢/kWh	$95/mo
6	City of Fort Collins - (Co)Municipal	80,929	14.34¢/kWh	$87/mo
7	Mountain View Elec Assn, IncCooperative	65,946	15.65¢/kWh	$137/mo
8	Holy Cross Electric Assn, IncCooperative	61,834	12.45¢/kWh	$140/mo
9	Poudre Valley REA, IncCooperative	56,750	12.47¢/kWh	$109/mo
10	La Plata Electric Assn, IncCooperative	47,488	18.33¢/kWh	$118/mo
11	City of LongmontMunicipal	44,390	13.12¢/kWh	$88/mo
12	City of Loveland - (Co)Municipal	42,769	15.29¢/kWh	$95/mo
13	Delta Montrose Electric AssnCooperative	37,301	14.90¢/kWh	$107/mo
14	Yampa Valley Electric Assn IncCooperative	28,314	16.98¢/kWh	$146/mo
15	San Isabel Electric Assn, IncCooperative	26,166	18.86¢/kWh	$118/mo
16	Mountain Parks Electric, IncCooperative	23,368	17.54¢/kWh	$128/mo
17	Grand Valley PowerCooperative	20,095	16.20¢/kWh	$129/mo
18	City of FountainMunicipal	18,127	14.05¢/kWh	$100/mo
19	Empire Electric Assn, IncCooperative	15,986	15.68¢/kWh	$110/mo
20	San Miguel Power Assn, IncCooperative	15,087	16.84¢/kWh	$135/mo
21	Sangre De Cristo Elec Assn IncCooperative	14,818	Not reported	Not reported
22	Tesla Inc.Behind the Meter	13,820	12.48¢/kWh	$68/mo
23	San Luis Valley R E C, IncCooperative	13,020	19.40¢/kWh	$126/mo
24	Gunnison County Elec Assn.Cooperative	11,879	Not reported	Not reported
25	Town of Estes ParkMunicipal	11,307	Not reported	Not reported
26	Southeast Colorado Power AssnCooperative	10,970	17.92¢/kWh	$127/mo
27	Morgan County Rural Elec AssnCooperative	9,650	14.46¢/kWh	$146/mo
28	Sunrun Inc.Behind the Meter	9,437	17.09¢/kWh	$110/mo
29	Y-W Electric Assn IncCooperative	8,809	15.66¢/kWh	$122/mo
30	Highline Electric AssnCooperative	8,415	15.16¢/kWh	$137/mo
31	City of Glenwood Springs - (Co)Municipal	7,259	Not reported	Not reported
32	K C Electric AssociationCooperative	6,609	13.02¢/kWh	$128/mo
33	City of Fort MorganMunicipal	6,535	7.31¢/kWh	$75/mo
34	City of Gunnison - (Co)Municipal	4,715	Not reported	Not reported
35	City of Trinidad - (Co)Municipal	4,673	Not reported	Not reported
36	City of Lamar - (Co)Municipal	4,089	Not reported	Not reported
37	City of La Junta - (Co)Municipal	3,800	Not reported	Not reported
38	City of Delta - (Co)Municipal	3,746	Not reported	Not reported
39	White River Electric Assn, IncCooperative	3,502	14.69¢/kWh	$103/mo
40	City of Aspen- (Co)Municipal	3,128	Not reported	Not reported
41	Moon Lake Electric Assn IncCooperative	2,222	9.71¢/kWh	$80/mo
42	City of Las Animas - (Co)Municipal	2,098	Not reported	Not reported
43	City of Burlington - (Co)Municipal	2,047	Not reported	Not reported
44	Palmetto Solar, LLCBehind the Meter	1,670	15.61¢/kWh	$110/mo
45	City of Yuma - (Co)Municipal	1,615	Not reported	Not reported
46	City of Center - (Co)Municipal	1,344	Not reported	Not reported
47	City of WrayMunicipal	1,343	Not reported	Not reported
48	SunPower Capital, LLCBehind the Meter	1,302	23.85¢/kWh	$62/mo
49	City of Holyoke - (Co)Municipal	1,222	Not reported	Not reported
50	Town of Lyons - (Co)Municipal	1,178	Not reported	Not reported
51	High West Energy, IncCooperative	1,055	15.13¢/kWh	$126/mo
52	Spruce FinanceBehind the Meter	1,043	9.28¢/kWh	$63/mo
53	City of Julesburg - (Co)Municipal	954	Not reported	Not reported
54	City of Springfield - (Co)Municipal	921	Not reported	Not reported
55	Town of Oak Creek - (Co)Municipal	696	Not reported	Not reported
56	Town of Haxtun - (Co)Municipal	622	Not reported	Not reported
57	EverBright, LLCBehind the Meter	590	15.46¢/kWh	$123/mo
58	Town of Holly - (Co)Municipal	587	Not reported	Not reported
59	Town of Granada - (Co)Municipal	319	Not reported	Not reported
60	Town of Fleming - (Co)Municipal	223	Not reported	Not reported
61	Tri-County Electric Coop, Inc (OK)Cooperative	63	Not reported	Not reported
62	Wheatland Electric Coop, IncCooperative	57	Not reported	Not reported
63	Ahana Renewables, LLCBehind the Meter	25	Not reported	Not reported
64	Greenbacker Renewable Energy CorporationBehind the Meter	21	Not reported	Not reported
65	WAPA-- Western Area Power AdministrationFederal	15	Not reported	Not reported
66	TerraForm US Energy Services, LLCBehind the Meter	13	Not reported	Not reported
67	Southwestern Electric Coop Inc - (NM)Cooperative	7	Not reported	Not reported
68	Scale Sustainable I, LLCBehind the Meter	4	Not reported	Not reported
69	Deseret Generation & Tran CoopCooperative	1	Not reported	Not reported
70	Greenskies Renewable Energy, LLCBehind the Meter	1	Not reported	Not reported
71	SunnovaBehind the Meter	Not reported	Not reported	Not reported

Show all 71Show fewer

Small utilities that file the short form (EIA-861S) report only total sales, so their home price and bill are not reported.

Frequently asked questions

What is the biggest electric company in Colorado?: Public Service Co of Colorado had the most customers in Colorado in 2025, about 1,605,246.
How do I find which utility serves my address in Colorado?: Open your county page from the Colorado energy overview. It lists the utilities that report serving each county. Your power bill also names your utility.

Source: U.S. Energy Information Administration, Form EIA-861 (2025) · Data for 2025

Data sources

Form EIA-861 Annual Electric Power Industry ReportU.S. Energy Information Administration

Data for 2025

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