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 then enroll in Off-Peak Charging for a one-time $50 incentive plus roughly $100 in annual savings. The income-eligible Turnkey program is separate 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.

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. Home charging rebate applications must be submitted by December 31, 2026, so timing matters for anyone planning an install.