Eversource Baseboard Heat Cost: An April–July 2026 R3 Example

For an Eastern Massachusetts R3 heating account in Greater Boston, Cambridge or the South Shore, 600 kWh of additional baseboard use comes to about $201.04 using the published April–July 2026 delivery components and February–July basic supply price. This is a historical calculation with hypothetical consumption. It is not a current September quote.

The delivery table distinguishes R3 electric heating from the separate heat-pump class. Ordinary baseboard heat should not be priced using the heat-pump winter discount.

Build the rate before multiplying

The fixed basic supply component was $0.15629/kWh. The R3 delivery lines sum to $0.1787823/kWh for the stated territory. That total includes the $0.08721 distribution charge, transmission, the negative transition adjustment, decoupling and listed program charges. Combined variable cost is $0.3350723/kWh.

Multiplying 600 × $0.3350723 gives $201.04338, rounded to $201.04. The account’s $10 monthly customer charge is separate. It would make a hypothetical whole-account 600-kWh bill $211.04 before other account adjustments; it is not another $10 caused by operating one heater.

Cape Cod and Martha’s Vineyard use a different energy-efficiency component. R4 assistance and other account conditions also require their own treatment. Match the class and service territory on the actual statement before using this example.

Measure the change you can control

Use circuit or interval information to estimate heating kWh across comparable weather. Whole-home consumption includes cooking, hot water and other loads, so an extra 600 kWh cannot automatically be attributed to the baseboards. A thermostat schedule is worth comparing only if comfort remains acceptable and weather differences are considered.

At this historical rate, reducing heating consumption by 100 kWh would reduce variable charges by about $33.51. For a current decision, replace every tariff input with the current bill. Do not carry the expired rate forward or describe the hypothetical load as a measured household result.