Electricity rates — Connecticut Light & Power Co
A household served by Connecticut Light & Power Co using 1,000 kWh a month pays about $3,524.81 a year on the cheapest of 2 generally available plans — Rate 7 - Residential Time-Of-Day Electric Service from Connecticut Light & Power Co, in effect since January 2026. Rates checked September 23, 2026. A further 6 schedules are published but restricted — means-tested, closed to new customers, or needing particular equipment — and they are priced further down.
Every priced plan, 1,000 kWh/mo
| Plan | Per year | vs cheapest | Effective |
|---|---|---|---|
| Rate 18- Controlled Water Heating Electric Serviceflat rate · in effect since January 2026 · delivery charges only | $1,368.96 | −$2,155.85 | 11.4¢ |
| Rate 5 - Residential Electric Heating Serviceflat rate · in effect since January 2026 · delivery charges only | $1,938.48 | −$1,586.33 | 16.2¢ |
| Rate 7 - Residential Time-Of-Day Electric Servicetime-of-use · in effect since January 2026 · delivery charges only | $1,979.18 | −$1,545.63 | 16.5¢ |
| Rate 1 - Residential Electric Serviceflat rate · in effect since January 2026 · delivery charges only | $2,068.08 | −$1,456.73 | 17.2¢ |
| Rate 18- Controlled Water Heating Electric Serviceflat rate · in effect since January 2026 · needs electric heating | $2,817.84 | −$706.97 | 23.5¢ |
| Rate 5 - Residential Electric Heating Serviceflat rate · in effect since January 2026 · needs electric heating | $3,491.40 | −$33.41 | 29.1¢ |
| Rate 7 - Residential Time-Of-Day Electric Service✓ cheapesttime-of-use · in effect since January 2026 | $3,524.81 | — | 29.4¢ |
| Rate 1 - Residential Electric Serviceflat rate · in effect since January 2026 | $3,621.00 | +$96.19 | 30.2¢ |
Cost across usage levels
The cheapest plan at each consumption level, showing whether the ranking holds as usage changes.
- 500 kWh/mo — cheapest $1,820.13 (Rate 7 - Residential Time-Of-Day Electric Service), dearest $1,868.28, a $48.15 spread
- 1,000 kWh/mo — cheapest $3,524.81 (Rate 7 - Residential Time-Of-Day Electric Service), dearest $3,621.00, a $96.19 spread
- 2,000 kWh/mo — cheapest $6,934.22 (Rate 7 - Residential Time-Of-Day Electric Service), dearest $7,126.56, a $192.34 spread
What a typical bill costs
At 1,000 kWh a month the 2 generally available plans here run from $3,524.81 on Rate 7 - Residential Time-Of-Day Electric Service to $3,621.00 on Rate 1 - Residential Electric Service, with a median of $3,572.90.
Effective rates, bill divided by kilowatt-hours, span 29.4¢ to 30.2¢ per kWh at that usage.
What Connecticut Light & Power Co's customers were billed in 2024
At 656 kWh a month, Connecticut Light & Power Co's median open plan comes to 30.3¢ per kWh, 6% above the 28.5¢ its customers were billed in 2024, riders included. Rates set since 2024 account for some of that.
| Ownership, as EIA classes it | Investor-owned |
|---|---|
| Full-service homes in Connecticut | 924,132 |
| Homes it delivers to for other suppliers | 250,288 |
| Share of Connecticut's households | 78% |
| Average use per home | 656 kWh a month |
| Average bill per home | $187.10 a month |
| Billed per kWh, riders included | 28.5¢ |
| Median open plan here, at that use | 30.3¢ |
Connecticut Light & Power Co in U.S. Energy Information Administration, Form EIA-861, 2024 (Sales_Ult_Cust_2024.xlsx), retrieved September 23, 2026.
How it compares
Among the 109 utilities indexed, Connecticut Light & Power Co's cheapest open plan is the 6th-highest, 2.1× as much as their median of $1,649.16. It sits between Long Island Power Authority ($3,454.72) and Southern California Edison Co ($3,742.62).
Its fixed charge, $9.62 a month on Rate 7 - Residential Time-Of-Day Electric Service, is lower than on the cheapest plan of 88 of the other 108 utilities.
None of Connecticut Light & Power Co's plans open to any household has a tiered step or a seasonal price in this data: a kWh costs the same however much is used and whatever the month.
In the guides: What a bill costs before a single kilowatt-hour
How the answer changes with usage
Rate 7 - Residential Time-Of-Day Electric Service is cheapest at every level tested — $1,820.13 a year at 500 kWh a month, $6,934.22 at 2,000 kWh.
The penalty for a poor choice grows with usage: $48.15 a year at 500 kWh against $192.34 at 2,000 kWh.
6 plans on file, at 1,000 kWh a month
Rate 18- Controlled Water Heating Electric Service — $1,368.96 a year, 11.4¢ per kWh effective, flat rate. It carries a $11.00 monthly standing charge. In effect since January 2026. Restricted: delivery charges only.
Rate 5 - Residential Electric Heating Service — $1,938.48 a year, 16.2¢ per kWh effective, flat rate. It carries a $23.75 monthly standing charge. In effect since January 2026. Restricted: delivery charges only.
Rate 7 - Residential Time-Of-Day Electric Service — $1,979.18 a year, 16.5¢ per kWh effective, time-of-use. It carries a $9.62 monthly standing charge. In effect since January 2026. Restricted: delivery charges only.
Rate 1 - Residential Electric Service — $2,068.08 a year, 17.2¢ per kWh effective, flat rate. It carries a $9.62 monthly standing charge. In effect since January 2026. Restricted: delivery charges only.
Rate 18- Controlled Water Heating Electric Service — $2,817.84 a year, 23.5¢ per kWh effective, flat rate. It carries a $11.00 monthly standing charge. In effect since January 2026. Restricted: needs electric heating.
Rate 5 - Residential Electric Heating Service — $3,491.40 a year, 29.1¢ per kWh effective, flat rate. It carries a $23.75 monthly standing charge. In effect since January 2026. Restricted: needs electric heating.
How these plans are structured
Of 8 priceable plans: 2 time-of-use, 6 flat-rate.
Fixed monthly charges run from $9.62 to $23.75.
Who provides these plans
EIA-861 lists Connecticut Light & Power Co serving homes in Connecticut and in no other state, which is how its plans are placed there. 8 of its 8 published residential schedules can be priced.
The largest saving available here
Moving from Rate 1 - Residential Electric Service to Rate 7 - Residential Time-Of-Day Electric Service saves $96.19 a year at 1,000 kWh a month, with no change in consumption.
What this does not cover
2 of these plans price by the hour, so their figures are marked lower confidence.
New to these terms? The methodology page explains tiered bands, time-of-use periods and fixed charges, and sets out exactly what the rate engine assumes.
Estimate — your actual bill may differ.
Tariff structures from NREL/OpenEI Utility Rate Database (CC0 1.0), retrieved September 23, 2026.