States › Colorado › Public Service Co of Colorado

investor-owned utility · EIA utility 15466

Public Service Co of Colorado

1,365,053 residential customers in Colorado · 56 counties in territory · balancing authority PSCO

Form EIA-861, 2024 finalMonthly to Jul 2026

Average residential price, 2024. Dial position: 71% of 1,230 US utilities had this price or lower. Ticks: Colorado and US averages.

Average price is revenue divided by sales for the sector and year; it is not a tariff rate. Reliability figures are as reported by utilities to EIA on Form 861 and may use different calculation methods. Annual figures: Form EIA-861 for 2024, final release. Monthly state figures run to July 2026.

Public Service Co of Colorado serves 1,365,053 residential customers in Colorado as an investor-owned utility, according to its 2024 Form EIA-861 filing, with a service territory that touches 56 counties.

Its average residential price that year was 15.05¢ per kilowatthour, about the same as the Colorado average of 14.92¢ and 8.7% below the US average of 16.48¢. The figure is residential revenue divided by residential sales, so it folds in fixed charges, riders and every rate schedule the utility bills under.

That works out to an average residential bill of $90.26 a month on average use of 600 kWh a month. Across Colorado the average bill was $100.57 on 674 kWh, so a bill gap reflects how much power households use as well as what each kilowatthour costs.

For reliability it reported a SAIDI of 351.7 minutes per customer with major event days included and 158.0 minutes with them excluded, calculated under IEEE 1366 standard. The median among Colorado utilities reporting was 157.8 minutes with major event days; this utility's figure is 123% above that median.

The average price is up 35.7% on 2019, against up 22.5% for Colorado as a whole, and up 5.0% on 2023.

15.05¢average residential price per kWhColorado 14.92¢ · US 16.48¢

$90.26average monthly residential billon 600 kWh a month

1,365,053residential customers1,589,710 customers in all sectors

351.7SAIDI minutes per customer, all eventsColorado median 157.8

Compared with Colorado, the US and other investor-owned utilities

Measure, 2024	This utility	Investor-owned utilities, US median	Colorado	United States
Average residential price per kWh	15.05¢	16.17¢	14.92¢	16.48¢
Average monthly residential bill	$90.26	$131.47	$100.57	$142.26
Average monthly use, kWh	600	787	674	863
Residential price change, 1 year	+5.0%	—	+4.3%	+3.0%
Residential price change, 5 years	+35.7%	—	+22.5%	+26.7%
SAIDI, all events (minutes)	351.7	278.7	157.8 median	184.5 median
SAIDI, without major event days	158.0	106.5	85.4 median	99.8 median

State and US prices, bills and use are EIA's own averages over every customer. The ownership column and the reliability columns are medians across utilities with at least 1,000 residential customers, computed on this site from the final 2024 file. In Colorado this utility's price ranks 15 of 30, counting from the highest.

Average price by year

Public Service Co of ColoradoColorado averageUS average

Cents per kWh, nominal.

Year by year

Year	¢ per kWh	Colorado ¢	Monthly bill	kWh a month	Residential customers	All sales
2024	15.05¢	14.92¢	$90.26	600	1,365,053	28.4 TWh
2023	14.34¢	14.30¢	$83.94	586	1,346,146	28 TWh
2022	14.13¢	14.19¢	$87.24	617	1,328,979	28.8 TWh
2021	12.45¢	13.07¢	$78.92	634	1,314,481	28.9 TWh
2020	11.46¢	12.36¢	$73.48	641	1,298,707	28.8 TWh
2019	11.09¢	12.18¢	$68.13	614	1,281,850	29.2 TWh
2018	11.12¢	12.15¢	$69.23	623	1,262,866	29.2 TWh
2017	11.35¢	12.17¢	$69.20	610	1,244,432	28.6 TWh
2016	11.47¢	12.07¢	$72.15	629	1,228,305	28.8 TWh
2015	11.60¢	12.12¢	$72.69	627	1,211,662	28.7 TWh
2014	12.01¢	12.18¢	$75.44	628	1,195,260	28.7 TWh
2013	11.70¢	11.93¢	$76.41	653	1,182,093	28.9 TWh

Bundled residential service only in the price, bill and use columns. Bill = residential revenue ÷ customers ÷ 12; use = residential sales ÷ customers ÷ 12.

Month by month

Public Service Co of ColoradoColorado average

Form EIA-861M monthly sample, bundled residential service in Colorado. Preliminary until EIA finalises the year. Latest: 17.96¢ in July 2026, average bill $165.82 on 923 kWh.

Sales by sector, 2024

Sector	Customers	Sales	Share of sales	Revenue	¢ per kWh, bundled
Residential	1,365,053	9.8 TWh	35%	$1,478,540,700	15.05¢
Commercial	224,348	12.7 TWh	45%	$1,498,938,100	11.84¢
Industrial	308	5.8 TWh	21%	$451,516,200	7.73¢
Transportation	1	85.7 GWh	0%	$8,279,600	—

Customers, sales and revenue count every service type the utility reported (bundled, energy-only and delivery-only). The price column uses bundled service alone, because part-bill revenue would understate it. Sources of energy: 38 TWh in total, of which 62.1% was its own net generation and 15.7 TWh was bought wholesale; summer peak demand 6,834 MW.

Reliability

SAIDI, all events351.7 min

SAIDI, without major event days158 min

Minutes of sustained interruption per customer in 2024, as the utility reported them under IEEE 1366 standard. SAIFI: 1.68 interruptions per customer with major event days, 1.36 without; CAIDI 209.3 minutes per interruption. EIA's Colorado total across all reporting utilities was 255.1 minutes with major event days and 119.0 without. Major event days are storms and similar events that a utility's chosen method sets apart; methods differ, so treat comparisons as approximate. What SAIDI and SAIFI mean.

Year	SAIDI, all events	SAIDI, no major events	SAIFI, all events	SAIFI, no major events	Method
2024	351.7	158.0	1.68	1.36	IEEE 1366
2023	112.8	104.2	1.02	0.98	IEEE 1366
2022	173.7	111.8	1.17	1.05	IEEE 1366
2021	180.9	130.6	1.20	1.00	IEEE 1366
2020	138.6	83.3	1.03	0.85	IEEE 1366
2019	213.5	92.7	1.10	0.88	IEEE 1366
2018	112.6	97.9	1.02	0.98	IEEE 1366
2017	107.7	84.5	1.01	0.92	IEEE 1366
2016	156.5	86.5	1.23	0.97	IEEE 1366
2015	97.0	88.3	0.98	0.95	IEEE 1366
2014	89.0	85.0	1.00	1.00	IEEE 1366
2013	114.0	94.0	1.18	1.13	IEEE 1366

Generation at plants it operates, 2025

Natural gas 49.5% 11.2 TWh
Coal 33.2% 7.5 TWh
Wind 16.8% 3.8 TWh
Hydro 0.4% 95.4 GWh

Net generation of 22.5 TWh at power plants this utility operates, from Form EIA-923. It is not the mix delivered to customers: utilities also buy power wholesale (15.7 TWh in 2024), sell generation to others and may co-own plants that another company operates.

Counties in its service territory

Counties the utility listed on Form EIA-861 for 2024. Listing a county does not mean the utility serves all of it.

Other utilities in Colorado

Utility	Ownership	Residential customers	¢ per kWh	Monthly bill	SAIDI, all events	SAIDI, no major events
Black Hills Colorado Electric, LLC	Investor-owned	89,252	17.05¢	$97.37	323.3	101.4
City of Colorado Springs	Municipal	216,771	14.45¢	$89.51	62.7	44.8
CORE Electric Cooperative	Cooperative	165,067	15.04¢	$129.93	212.4	74.2
United Power, Inc	Cooperative	101,502	15.75¢	$127.70	76.9	76.9
City of Fort Collins	Municipal	70,803	13.21¢	$82.07	11.1	11.1
Mountain View Elec Assn, Inc	Cooperative	59,789	15.52¢	$139.24	55.6	42.0
Holy Cross Electric Assn, Inc	Cooperative	49,982	12.04¢	$138.45	56.5	56.5
Poudre Valley REA, Inc	Cooperative	49,587	12.21¢	$108.03	324.6	74.2

All Colorado utilities · Investor-owned utilities nationwide

Questions and answers

How much does electricity cost from Public Service Co of Colorado?

Residential customers paid an average of 15.05¢ per kilowatthour in 2024. EIA derives this by dividing residential revenue by residential sales; it is an average across all rate schedules and charges, not a tariff rate.

How does that compare with Colorado?

The Colorado average residential price in 2024 was 14.92¢ and the US average 16.48¢; Public Service Co of Colorado was about the same as the state figure. Among 30 utility filings with a bundled residential price in Colorado, it had the 15th highest.

What is the average Public Service Co of Colorado bill?

$90.26 a month in 2024, on average residential use of 600 kWh a month (annual revenue and sales divided by customers and by twelve). The Colorado average was $100.57 on 674 kWh.

How reliable is Public Service Co of Colorado service?

It reported 351.7 minutes of interruption per customer (SAIDI) including major event days and 158.0 minutes excluding them, with 1.68 interruptions per customer (SAIFI) in 2024. Utilities calculate these under differing methods, so comparisons are approximate.

Is the Public Service Co of Colorado price rising?

The average residential price was up 5.0% in 2024 compared with 2023 and up 35.7% compared with 2019.

Which counties does Public Service Co of Colorado serve?

Its Form EIA-861 service territory lists 56 counties, including Adams County, CO, Alamosa County, CO, Arapahoe County, CO, Archuleta County, CO, Baca County, CO and Bent County, CO. A county can appear in several utilities' territories.

Provenance

Source: U.S. Energy Information Administration. Annual figures are from Form EIA-861 (sales to ultimate customers, reliability, operational data and service territory files), final release for 2024, respondent "Public Service Co of Colorado", utility number 15466. Monthly utility figures are from the Form EIA-861M sample. State and US averages are from the Form EIA-861M sales and revenue workbook, published through July 2026. Generation by fuel is from Form EIA-923, 2025 final. All are US government works in the public domain. Page built 1 Oct 2026. Errors in processing are corrected at the next build; see corrections. For tariffs and rate schedules, consult the utility or the state utility commission.