States › South Carolina › South Carolina Public Service Authority
state-owned utility · EIA utility 17543
South Carolina Public Service Authority
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.
South Carolina Public Service Authority serves 185,529 residential customers in South Carolina as a state-owned utility, according to its 2024 Form EIA-861 filing, with a service territory that touches 3 counties.
Its average residential price that year was 11.38¢ per kilowatthour, 20% below the South Carolina average of 14.23¢ and 31% 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 $107.52 a month on average use of 945 kWh a month. Across South Carolina the average bill was $149.51 on 1,050 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 58.4 minutes per customer with major event days included and 55.2 minutes with them excluded, calculated under IEEE 1366 standard. The median among South Carolina utilities reporting was 733.2 minutes with major event days; this utility's figure is 92% below that median.
The average price is down 1.2% on 2019, against up 9.5% for South Carolina as a whole, and little changed on 2023.
Compared with South Carolina, the US and other state-owned utilities
| Measure, 2024 | This utility | State-owned utilities, US median | South Carolina | United States |
|---|---|---|---|---|
| Average residential price per kWh | 11.38¢ | 16.46¢ | 14.23¢ | 16.48¢ |
| Average monthly residential bill | $107.52 | $107.52 | $149.51 | $142.26 |
| Average monthly use, kWh | 945 | 739 | 1,050 | 863 |
| Residential price change, 1 year | 0.0% | — | +4.0% | +3.0% |
| Residential price change, 5 years | -1.2% | — | +9.5% | +26.7% |
| SAIDI, all events (minutes) | 58.4 | 63.5 | 733.2 median | 184.5 median |
| SAIDI, without major event days | 55.2 | 57.3 | 103.3 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 South Carolina this utility's price ranks 26 of 28, counting from the highest.
Average price by year
South Carolina Public Service AuthoritySouth Carolina averageUS average
Year by year
| Year | ¢ per kWh | South Carolina ¢ | Monthly bill | kWh a month | Residential customers | All sales |
|---|---|---|---|---|---|---|
| 2024 | 11.38¢ | 14.23¢ | $107.52 | 945 | 185,529 | 10.1 TWh |
| 2023 | 11.38¢ | 13.68¢ | $106.68 | 937 | 177,342 | 9.9 TWh |
| 2022 | 11.33¢ | 13.59¢ | $109.58 | 967 | 170,536 | 9.9 TWh |
| 2021 | 11.32¢ | 12.86¢ | $113.19 | 1,000 | 166,043 | 9.2 TWh |
| 2020 | 11.44¢ | 12.78¢ | $108.89 | 952 | 160,917 | 7.7 TWh |
| 2019 | 11.52¢ | 12.99¢ | $114.17 | 991 | 158,032 | 8.3 TWh |
| 2018 | 11.77¢ | 12.44¢ | $123.05 | 1,045 | 154,586 | 8.5 TWh |
| 2017 | 11.98¢ | 13.02¢ | $115.44 | 963 | 151,044 | 8.2 TWh |
| 2016 | 11.62¢ | 12.65¢ | $118.60 | 1,021 | 147,447 | 8.4 TWh |
| 2015 | 10.96¢ | 12.57¢ | $112.30 | 1,025 | 145,208 | 11.2 TWh |
| 2014 | 11.23¢ | 12.45¢ | $118.11 | 1,052 | 142,663 | 11.2 TWh |
| 2013 | 10.60¢ | 11.99¢ | $105.90 | 999 | 140,126 | 11.1 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
South Carolina Public Service AuthoritySouth Carolina average
Sales by sector, 2024
| Sector | Customers | Sales | Share of sales | Revenue | ¢ per kWh, bundled |
|---|---|---|---|---|---|
| Residential | 185,529 | 2.1 TWh | 21% | $239,381,300 | 11.38¢ |
| Commercial | 30,938 | 2 TWh | 20% | $187,643,100 | 9.43¢ |
| Industrial | 27 | 6 TWh | 59% | $304,621,700 | 5.08¢ |
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: 27.6 TWh in total, of which 74% was its own net generation and 7 TWh was bought wholesale; summer peak demand 4,949 MW.
Reliability
Minutes of sustained interruption per customer in 2024, as the utility reported them under IEEE 1366 standard. SAIFI: 0.69 interruptions per customer with major event days, 0.65 without; CAIDI 85.1 minutes per interruption. EIA's South Carolina total across all reporting utilities was 3,136.5 minutes with major event days and 117.8 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 | 58.4 | 55.2 | 0.69 | 0.65 | IEEE 1366 |
| 2023 | 67.5 | 46.9 | 0.85 | 0.62 | IEEE 1366 |
| 2022 | 219.6 | 23.7 | 1.23 | 0.46 | IEEE 1366 |
| 2021 | 132.9 | 18.9 | 0.79 | 0.27 | IEEE 1366 |
| 2020 | 48.8 | 23.9 | 0.61 | 0.39 | IEEE 1366 |
| 2019 | 132.9 | 18.9 | 0.79 | 0.27 | IEEE 1366 |
| 2018 | 518.4 | 20.6 | 1.10 | 0.31 | IEEE 1366 |
| 2017 | 31.6 | 18.8 | 0.51 | 0.32 | IEEE 1366 |
| 2016 | 2,133.0 | 23.5 | 2.20 | 0.40 | IEEE 1366 |
| 2015 | 37.2 | 23.0 | 0.60 | 0.29 | IEEE 1366 |
| 2014 | 248.6 | 17.9 | 0.86 | 0.31 | IEEE 1366 |
| 2013 | 25.3 | 18.8 | 0.41 | 0.33 | IEEE 1366 |
Generation at plants it operates, 2025
- Coal 71.7% 12.9 TWh
- Natural gas 26.6% 4.8 TWh
- Hydro 1.3% 238.3 GWh
- Petroleum 0.3% 56.6 GWh
- Other 0.1% 21.1 GWh
Net generation of 18 TWh at power plants this utility operates, from Form EIA-923. It is not the mix delivered to customers: utilities also buy power wholesale (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 South Carolina
| Utility | Ownership | Residential customers | ¢ per kWh | Monthly bill | SAIDI, all events | SAIDI, no major events |
|---|---|---|---|---|---|---|
| Berkeley Electric Coop Inc | Cooperative | 115,117 | 14.93¢ | $170.31 | 293.3 | 88.9 |
| Horry Electric Coop Inc | Cooperative | 86,726 | 13.23¢ | $140.32 | 133.4 | 107.6 |
| Palmetto Electric Coop Inc | Cooperative | 68,338 | 12.79¢ | $153.88 | 630.7 | 31.7 |
| Blue Ridge Electric Coop Inc | Cooperative | 67,553 | 18.94¢ | $189.40 | 5,291.4 | 193.2 |
| York Electric Coop Inc | Cooperative | 65,259 | 12.65¢ | $136.65 | 980.9 | 89.1 |
| Laurens Electric Coop, Inc | Cooperative | 58,438 | 14.66¢ | $156.12 | 8,310.0 | 97.1 |
| Mid-Carolina Electric Coop Inc | Cooperative | 56,463 | 14.88¢ | $170.59 | 3,915.3 | 117.5 |
| Aiken Electric Coop Inc | Cooperative | 49,460 | 15.53¢ | $170.28 | 7,941.1 | 93.9 |
All South Carolina utilities · State-owned utilities nationwide
Questions and answers
How much does electricity cost from South Carolina Public Service Authority?
Residential customers paid an average of 11.38¢ 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 South Carolina?
The South Carolina average residential price in 2024 was 14.23¢ and the US average 16.48¢; South Carolina Public Service Authority was 20% below the state figure. Among 28 utility filings with a bundled residential price in South Carolina, it had the 26th highest.
What is the average South Carolina Public Service Authority bill?
$107.52 a month in 2024, on average residential use of 945 kWh a month (annual revenue and sales divided by customers and by twelve). The South Carolina average was $149.51 on 1,050 kWh.
How reliable is South Carolina Public Service Authority service?
It reported 58.4 minutes of interruption per customer (SAIDI) including major event days and 55.2 minutes excluding them, with 0.69 interruptions per customer (SAIFI) in 2024. Utilities calculate these under differing methods, so comparisons are approximate.
Is the South Carolina Public Service Authority price rising?
The average residential price was little changed in 2024 compared with 2023 and down 1.2% compared with 2019.
Which counties does South Carolina Public Service Authority serve?
Its Form EIA-861 service territory lists 3 counties: Berkeley County, SC, Georgetown County, SC and Horry County, SC. 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 "South Carolina Public Service Authority", utility number 17543. 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 30 Sep 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.