National Grid heat pump rebates.
Stacked, current, actionable.

Overview

National Grid serves roughly 1.7 million electric customers in Massachusetts and 1.6 million in upstate New York, and its rebate design differs meaningfully by state. In Massachusetts, National Grid co-funds the Mass Save program alongside Eversource, Unitil, and Berkshire Gas — customers interact with one portal regardless of which utility delivers their electricity.

In upstate New York, National Grid rebates flow through the NYSERDA Clean Heat program with the utility acting as delivery partner rather than administrator. The per-ton structure is distinct from the Mass Save whole-home tier and typically requires a participating contractor from the NYSERDA network.

Both programs paused or restructured briefly in early 2025 when federal 25C sunset for heat pumps, then reopened at roughly prior levels after state regulators approved replacement funding. Customers should treat current amounts as stable through the 2026 program year but verify at application.

Stacking with HEEHRA and federal credits

Massachusetts customers can stack Mass Save with HEEHRA once the HEEHRA portal opens — the federal stacking rules explicitly permit utility rebates to layer on top of HEEHRA disbursements. Current Mass Save language has not yet been updated to reflect HEEHRA coordination, so expect the DOER integration portal to sequence HEEHRA first and Mass Save second.

In upstate New York, NYSERDA Clean Heat is already live and coordinates directly with HEEHRA for LMI households through a single EmPower Plus intake. Customers above 150% AMI get Clean Heat only; customers under 80% AMI net the full HEEHRA $8,000 plus Clean Heat per-ton incentive plus National Grid delivery rebate on the same invoice.

Application tips

Pull your most recent National Grid bill before starting any application — both Massachusetts and New York portals require the 10-digit account number and service address exactly as it appears on the bill. A mismatch between legal address and billing address is the most common reason applications bounce back.

Get three contractor quotes from the Mass Save HEAT Loan network (MA) or NYSERDA Clean Heat network (NY). Participating contractors handle rebate paperwork directly and apply the discount at invoice, so an out-of-network quote that looks cheaper on paper will almost always net more expensive after you factor the lost rebate.

Document your existing heating system with photos and a recent fuel bill before install day. Both Mass Save and NYSERDA use fuel-displacement calculations to size rebate tiers, and if the contractor has to reconstruct your baseline from memory the rebate will default to the lower tier.