R-1: Regular Residential R-1 + Basic Service fixed
Plan for solar customers. Effective 2026-08-01. Fixed charge $10.00/month.
| Period | Price |
|---|---|
| All hours | 40.0¢ |
Typical customer: Worth it
National Grid Massachusetts and solar
National Grid Massachusetts is an investor-owned utility serving about 1,231,865 homes in Massachusetts. Here's what its rates and export rules mean for solar: for a typical customer, solar is worth it.
- Average price (2026 est.)
- 33.9¢11% above Massachusetts average
- Typical bill
- $186549 kWh a month
- Exports credited
- RetailFull retail net metering
- Typical payback
- 6.9 yrs5.1 kW, cash
Export rules for National Grid Massachusetts customers
Full retail net metering, monthly netting.
Class I net metering credits near retail.
MA net metering, Class I <=10 kW: net excess credited at approx basic service + distribution + transmission + transition kWh charges; credits carry forward
Solar for a typical National Grid Massachusetts home
| System | 5.1 kW (101% of 549 kWh/month) |
|---|---|
| Cost | $18,035, $17,035 after incentives |
| First-year savings | $2,130 |
| Payback | 6.9 years |
| 25-year net | $66,792 |
Uses the utility's average price; time-of-use plans can change this, so pick your plan in the calculator.
Current residential rate plans
Rates we verified from National Grid Massachusetts's tariff documents. Prices are per kWh including the main riders where noted; check your bill for the plan you're on.
Solar adoption
- Homes with solar (2025)
- 114,502
- Share of customers
- 9.3%
- Residential solar capacity
- 763 MW
- Residential customers
- 1,231,865
EIA-861, 2025. In competitive markets, some solar is reported by retail electricity providers instead.
Questions about National Grid Massachusetts and solar
Does National Grid Massachusetts have net metering?
Class I net metering credits near retail.
How much does electricity cost with National Grid Massachusetts?
Residential customers paid an average of 33.9¢ per kWh in 2025 (EIA), about 33.9¢ adjusted to 2026. The typical home uses 549 kWh a month, a bill of about $186.
Is solar worth it with National Grid Massachusetts?
For a typical customer, solar is worth it: a 5.1 kW system costing about $17,035 pays back in about 6.9 years, with $66,792 net over 25 years.
How many National Grid Massachusetts customers have solar?
About 114,502 homes had net-metered solar at the end of 2025, roughly 9.3% of residential customers (EIA-861).
Legal name: Massachusetts Electric Co (EIA ID 11804). Data: EIA-861 2025 and monthly data through 2026, state policy research October 2026, utility tariff sheets.