Who runs the utilities in Connecticut?
Connecticut has 1,541,704 residential customers, EIA-861 2024 sales file (99% of EIA's count). Investor-owned 96.4%. Municipal 3.6%. Connecticut ranks 7th of 51 states, investor-owned.
Connecticut homes by utility type
Connecticut: customers by type, %
- 96.4Investor-owned
- 3.6Municipal
| Connecticut type | Utilities | Customers | Share | Price ¢/kWh | Gap ¢ (%) | kWh/mo | Nonmetro |
|---|---|---|---|---|---|---|---|
| Investor-owned | 3 | 1,486,711 | 96.4% | 29.54 | not shown | 632 | no county data |
| Municipal | 7 | 54,993 | 3.6% | 18.57 | -10.97 (-37%) | 730 | no county data |
| Political subdivision | 1 | 0 | none | none | not shown | none | no county data |
In Connecticut, 293,596 customers (19%) are energy-only accounts with a competitive supplier.
Connecticut prices by utility type
municipal utilities average 18.6 cents, 11.0 cents (37%) below investor-owned at 29.5.
Connecticut gaps mix cost and customer mix; method.
Connecticut: which utilities set the averages
Investor-owned at 29.5 cents and municipal utilities at 18.6 are the widest pair in Connecticut, 11.0 cents (59%).
Investor-owned: Connecticut Light & Power Co holds 78% of priced customers at 28.5 cents, group average 29.5. Among 2 with 5,000+ customers, Connecticut Light & Power Co charges 28.5 and United Illuminating Co 34.0, 5.5 cents apart.
Municipal: Town of Wallingford holds 39% of priced customers at 15.7 cents, group average 18.6. Among 3 with 5,000+ customers, Town of Wallingford charges 15.7 and City of Norwich 22.8, 7.1 cents apart.
Connecticut: largest utilities
| Connecticut Light & Power Co | Investor-owned | 1,174,420 | 28.51 | 656 | no data |
|---|---|---|---|---|---|
| United Illuminating Co | Investor-owned | 312,291 | 34.04 | 542 | no data |
| Town of Wallingford | Municipal | 21,405 | 15.65 | 828 | no data |
| City of Norwich | Municipal | 18,870 | 22.78 | 616 | no data |
| Groton Dept of Utilities | Municipal | 12,284 | 18.70 | 715 | no data |
| Bozrah Light & Power Company | Municipal | 2,434 | 19.33 | 832 | no data |
Compare your Connecticut utility
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Connecticut next to its neighbors
Connecticut: municipal -37%, cooperative not shown against investor-owned. Gaps are within each state.
| State | Investor-owned | Municipal | Cooperative | Muni gap | Coop gap |
|---|---|---|---|---|---|
| Connecticut | 96% | 4% | 0% | -37% | not shown |
| Massachusetts | 91% | 9% | 0% | -49% | not shown |
| New York | 85% | 1% | 0% | -68% | not shown |
| Rhode Island | 99% | 1% | 0% | not shown | not shown |
More
Similar investor-owned share: Maine 98%, Pennsylvania 97%, Nevada 96%, Hawaii 93%
Sources
Connecticut: EIA-861 (2024), USDA RUCC (2023); retrieval dates, checksums.
Questions
Which utility type serves most Connecticut homes?
Investor-owned utilities, 96.4% of 1,541,704 customers.
Do Connecticut co-ops or municipal utilities charge less?
Municipal utilities averaged 18.6 cents per kWh against 29.5 for investor-owned (-37%).
How many utilities does Connecticut have?
EIA-861 (2024) lists 11; residential sales are reported by 6.
Can Connecticut customers pick their utility?
Not the wires: 19% of Connecticut customers choose an energy supplier, and the local utility still delivers.