Electricity rates in Irmo, SC
Irmo (12,056 people, Richland County) is served by 3 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 Irmo
| Utility | Type | Rate | Avg bill | Homes (statewide) | Outage min |
|---|---|---|---|---|---|
| Dominion Energy South Carolina | Investor-owned utility | 17.12¢ | $177 | 713K | 131 |
| Mid-Carolina Electric Co-op | Electric cooperative | 17.60¢ | $204 | 57K | 267 |
| Fairfield Electric Co-op | Electric cooperative | 16.31¢ | $189 | 33K | 139 |
Power outages in Richland County right now
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Outage history in Richland County
| 2024 | 2025 | |
|---|---|---|
| Outage minutes per customer | 1,207 | 172 |
| Days with outages | 63 | 38 |
| Most customers out at once | 106,649 (46.9%) | 43,801 (19.2%) |
| Worst day | 2024-09-27 | 2025-06-26 |
Outage minutes by month, 2025
Less outage time than 2024 (1,207 min). Data: ORNL EAGLE-I county outage snapshots every 15 minutes, covering all utilities in the county.
Nearby cities
- Seven Oaks 17.1¢
- Lake Murray of Richland 17.1¢
- Saint Andrews 17.1¢
- Oak Grove 17.1¢
- Lexington 17.1¢
- West Columbia 17.1¢
- Springdale 17.1¢
- Columbia 17.1¢
- Cayce 17.1¢
- Chapin 17.1¢
ZIP codes: 29063
Frequently asked questions
What is the electricity rate in Irmo?
Most homes in Irmo 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 Irmo: Mid-Carolina Electric Co-op (17.60¢), Fairfield Electric Co-op (16.31¢).
What is the average electric bill in Irmo?
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 Irmo, SC?
3 utilities serve Irmo's ZIP codes: Dominion Energy South Carolina, Mid-Carolina Electric Co-op, Fairfield Electric Co-op. Which one serves you depends on your street address.
How often does the power go out in Irmo?
In 2025, customers in Richland County averaged 2 hr 52 min without power. Outages hit 38 days of the year, and the worst day was 2025-06-26, when 43,801 customers (19.2%) were out. Source: ORNL EAGLE-I.