Electricity rates in Johnston, SC
Johnston (2,348 people, Edgefield County) is served by 2 electric utilities. Homes on Dominion Energy South Carolina pay about 17.12¢/kWh, 9% more than the South Carolina average.
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Electric companies serving Johnston
| Utility | Type | Rate | Avg bill | Homes (statewide) | Outage min |
|---|---|---|---|---|---|
| Dominion Energy South Carolina | Investor-owned utility | 17.12¢ | $177 | 713K | 131 |
| Aiken Electric Co-op | Electric cooperative | 18.30¢ | $201 | 51K | 189 |
Power outages in Edgefield County right now
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Outage history in Edgefield County
| 2024 | 2025 | |
|---|---|---|
| Outage minutes per customer | 11,398 | 333 |
| Days with outages | 78 | 72 |
| Most customers out at once | 13,969 (109.8%) | 6,362 (50%) |
| Worst day | 2024-09-28 | 2025-06-08 |
Outage minutes by month, 2025
Less outage time than 2024 (11,398 min). Data: ORNL EAGLE-I county outage snapshots every 15 minutes, covering all utilities in the county.
Nearby cities
- Edgefield 17.1¢
- Saluda 17.1¢
- Batesburg 17.1¢
- Batesburg-Leesville 17.1¢
- Leesville 17.1¢
- Murphys Estates 17.1¢
- Graniteville 17.1¢
- Aiken 17.1¢
- Warrenville 17.1¢
- Gloverville 17.1¢
ZIP codes: 29832
Frequently asked questions
What is the electricity rate in Johnston?
Most homes in Johnston get power from Dominion Energy South Carolina, where residential customers pay an average of 17.12¢/kWh including all charges. The South Carolina average is 15.64¢ and the U.S. average 17.99¢. Other utilities serving parts of Johnston: Aiken Electric Co-op (18.30¢).
What is the average electric bill in Johnston?
About $177 a month, based on 1,032 kWh a month (the average for Dominion Energy South Carolina customers) at 17.12¢/kWh. Homes with electric heat, pools or EVs pay more.
Who is the electric company in Johnston, SC?
2 utilities serve Johnston's ZIP codes: Dominion Energy South Carolina, Aiken Electric Co-op. Which one serves you depends on your street address.
How often does the power go out in Johnston?
In 2025, customers in Edgefield County averaged 5 hr 33 min without power. Outages hit 72 days of the year, and the worst day was 2025-06-08, when 6,362 customers (50%) were out. Source: ORNL EAGLE-I.