Electricity rates — ZIP 02108
A household in ZIP 02108 (Boston) using 1,000 kWh a month pays about $1,240.92 a year on the cheapest of 13 generally available plans — Greater Boston Residential R-1 (A1) from NSTAR Electric Company. Rates checked September 2, 2026. A further 26 schedules are published but restricted — means-tested, closed to new customers, or needing particular equipment — and they are priced further down.
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Cheapest 25 of 39 priced plans, 1,000 kWh/mo
| Plan | Per year | vs cheapest | Effective |
|---|---|---|---|
| Greater Boston Residential Assistance A4 (R-3) without electric heatflat rate · assistance rate | $1,175.88 | −$65.04 | 9.8¢ |
| Cambridge Electric Light Company Residential Space Heating R-3 (04)flat rate · needs electric heating | $1,175.88 | −$65.04 | 9.8¢ |
| Greater Boston Residential R-1 (A1)✓ cheapestflat rate | $1,240.92 | — | 10.3¢ |
| Greater Boston Residential Assistance A2 (R-2) with electric heatflat rate · assistance rate | $1,240.92 | — | 10.3¢ |
| Cambridge Electric Light Company Residential R-1 (01)flat rate | $1,240.92 | — | 10.3¢ |
| South Shore Residential R-1 Annual BS (32)flat rate | $1,240.92 | — | 10.3¢ |
| South Shore, Cape Cod and Martha's Vineyard Residential Space Heating R-3 BS (86)flat rate · needs electric heating | $1,327.92 | +$87.00 | 11.1¢ |
| Western Massachusetts Residential Space Heating Low Income Rate R-4flat rate · low-income rate | $1,400.16 | +$159.24 | 11.7¢ |
| Eastern Massachusetts Residential Space Heating Low Income Rate R-4flat rate · low-income rate | $1,419.12 | +$178.20 | 11.8¢ |
| South Shore, Cape Cod and Martha Vineyard Residential R-1 Annual CLC (32)flat rate | $1,438.56 | +$197.64 | 12.0¢ |
| Western Massachusetts Residential Discount Rate (R-2)flat rate · assistance rate | $1,583.28 | +$342.36 | 13.2¢ |
| Western Massachusetts Residential Space Heating R-3 (A4)flat rate · needs electric heating | $1,592.88 | +$351.96 | 13.3¢ |
| Eastern Massachusetts Residential Discount Rate (R-2)flat rate · assistance rate | $1,607.28 | +$366.36 | 13.4¢ |
| Eastern Massachusetts Residential Space Heating R-3flat rate · needs electric heating | $1,614.12 | +$373.20 | 13.5¢ |
| Eastern Massachusetts Residential Rate (R-1)flat rate | $1,802.28 | +$561.36 | 15.0¢ |
| Cape Cod Residential Space Heating R-3flat rate · needs electric heating | $2,043.96 | +$803.04 | 17.0¢ |
| Cape Cod Residential Space Heating Low Income Rate R-4flat rate · low-income rate | $2,043.96 | +$803.04 | 17.0¢ |
| Cape Cod Residential Rate (R-1)flat rate | $2,117.52 | +$876.60 | 17.6¢ |
| Cape Cod Residential Discount Rate (R-2)flat rate · assistance rate | $2,117.52 | +$876.60 | 17.6¢ |
| South Shore, Cape Cod and Martha's Vineyard Residential Space Heating R-3 BS (86)flat rate · needs electric heating | $2,958.48 | +$1,717.56 | 24.7¢ |
| Greater Boston Residential Assistance A4 (R-3) without electric heatflat rate · assistance rate | $3,051.36 | +$1,810.44 | 25.4¢ |
| Cambridge Electric Light Company Residential Space Heating R-3 (04)flat rate · needs electric heating | $3,051.36 | +$1,810.44 | 25.4¢ |
| South Shore, Cape Cod and Martha Vineyard Residential R-1 Annual CLC (32)flat rate | $3,069.12 | +$1,828.20 | 25.6¢ |
| Greater Boston Residential R-1 (A1)flat rate | $3,116.40 | +$1,875.48 | 26.0¢ |
| Greater Boston Residential Assistance A2 (R-2) with electric heatflat rate · assistance rate | $3,116.40 | +$1,875.48 | 26.0¢ |
14 further schedules are published and priced but not listed here — mostly regional and seasonal variants of the plans above. The dearest of them costs $4,183.44 a year at this usage.
Cost across usage levels
The cheapest plan at each consumption level, showing whether the ranking holds as usage changes.
- 500 kWh/mo — cheapest $665.52 (Greater Boston Residential R-1 (A1)), dearest $2,151.72, a $1,486.20 spread
- 1,000 kWh/mo — cheapest $1,240.92 (Greater Boston Residential R-1 (A1)), dearest $4,183.44, a $2,942.52 spread
- 2,000 kWh/mo — cheapest $2,391.84 (Greater Boston Residential R-1 (A1)), dearest $8,246.88, a $5,855.04 spread
What a typical bill costs
At 1,000 kWh a month the 39 priceable plans here run from $1,240.92 on Greater Boston Residential R-1 (A1) to $4,183.44 on Cape Cod Residential Rate (R-1), with a median of $3,069.12.
The spread is $2,942.52 a year — about $245.21 a month for identical electricity.
Effective rates, bill divided by kilowatt-hours, span 10.3¢ to 34.9¢ per kWh at that usage.
How the answer changes with usage
Greater Boston Residential R-1 (A1) is cheapest at every level tested — $665.52 a year at 500 kWh a month, $2,391.84 at 2,000 kWh.
The penalty for a poor choice grows with usage: $1,486.20 a year at 500 kWh against $5,855.04 at 2,000 kWh.
Cheapest 6 plans at 1,000 kWh a month
Greater Boston Residential Assistance A4 (R-3) without electric heat — $1,175.88 a year, 9.8¢ per kWh effective, flat rate. It carries a $7.50 monthly standing charge.
Cambridge Electric Light Company Residential Space Heating R-3 (04) — $1,175.88 a year, 9.8¢ per kWh effective, flat rate. It carries a $7.50 monthly standing charge.
Greater Boston Residential R-1 (A1) — $1,240.92 a year, 10.3¢ per kWh effective, flat rate. It carries a $7.50 monthly standing charge.
Greater Boston Residential Assistance A2 (R-2) with electric heat — $1,240.92 a year, 10.3¢ per kWh effective, flat rate. It carries a $7.50 monthly standing charge.
Cambridge Electric Light Company Residential R-1 (01) — $1,240.92 a year, 10.3¢ per kWh effective, flat rate. It carries a $7.50 monthly standing charge.
South Shore Residential R-1 Annual BS (32) — $1,240.92 a year, 10.3¢ per kWh effective, flat rate. It carries a $7.50 monthly standing charge.
How these plans are structured
Of 39 priceable plans: 39 flat-rate.
Fixed monthly charges run from $7.00 to $10.00.
Who provides these plans
Every plan here comes from NSTAR Electric Company — a limit of what has been indexed, not a claim that it is the only provider in ZIP 02108 (Boston).
The largest saving available here
Moving from Cape Cod Residential Rate (R-1) to Greater Boston Residential R-1 (A1) saves $2,942.52 a year at 1,000 kWh a month, with no change in consumption.
What this does not cover
Service territories do not follow ZIP boundaries. These are the plans found at the coordinate this ZIP was resolved from, not a verified list for every address in it.
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 2, 2026.
Location resolved through the US Census Bureau Geocoder (Public domain) at 42.3601, -71.0589.