Massachusetts Electric Company d/b/a National Grid

National Grid does not offer a separate EV time-of-use electricity rate in Massachusetts. Residential customers stay on their standard residential delivery rate and instead earn off-peak credits through the Charge Smart MA Off-Peak Charging Program. Starting November 1, 2025, off-peak hours run every day from 9pm to 1pm the following day, and participants earn 5 cents per kWh for off-peak charging from June through September and 3 cents per kWh from October through May. This rewards overnight and midday charging without changing the underlying rate.

The wiring rebate and the off-peak program are designed to stack: customers can take up to $700 toward garage or parking-area wiring and enroll in Off-Peak Charging for roughly $100 in annual savings; single-family homeowners must enroll to receive the wiring rebate, and the one-time $50 enrollment incentive is not paid to customers who also receive the wiring rebate. The income-eligible Turnkey program is a separate path (applications due November 30, 2026) and limited to customers on the R-2 discount rate or in Environmental Justice areas. The commercial and multi-unit programs work differently, funding up to 100 percent of electrical make-ready infrastructure rather than paying per-kWh credits, and 2026 is the final year of the current funding cycle; applications after October 1, 2026 are reviewed as processing time permits, and Multi-Unit Dwelling site plan applications closed on that date.

National Grid is the regulated investor-owned utility for central and eastern Massachusetts and runs these EV programs under MA DPU Phase III orders, which is why eligibility tracks rate class and Environmental Justice status rather than geography alone. National Grid's wiring rebate page shows two dates: it asks for completed work and applications by December 10, 2026, while its eligibility section allows 2026 work to be submitted by March 31, 2027. Plan around December 10 and confirm with National Grid, because incentives are expected to change in 2027.