Eversource heat pump rebates.
Stacked, current, actionable.

Overview

Eversource is the largest utility in New England, serving roughly 1.3 million electric customers in Connecticut, 1.5 million in Massachusetts, and 530,000 in New Hampshire. Rebate design varies by state because each state commission sets its own rules, but Eversource operates a single customer portal that routes you to the right program based on service address.

Connecticut runs the most generous structure — Energize CT whole-home amounts lead New England, driven by the state Public Utilities Regulatory Authority (PURA) pushing aggressive electrification targets. Massachusetts participation is co-administered with National Grid and the other Mass Save utilities, meaning the rebate schedule is identical regardless of which utility serves your address.

New Hampshire sits third in rebate value but has the fastest approval turnaround — NHSaves is one of the only programs in the region where point-of-sale discount and contractor paperwork clear in under 10 business days. Customers weighing cross-border installs should use their service address to determine which state program applies.

Stacking with HEEHRA and federal credits

Eversource rebates stack with HEEHRA under the standard federal stacking rules, but each state is at a different HEEHRA stage. Connecticut is still pending portal launch (targeting Q2-Q3 2026), Massachusetts is targeting Q3 2026 DOER integration, and New Hampshire has not yet announced a launch date. Until HEEHRA goes live in each state, utility rebate is the only lever.

When HEEHRA does open in each state, expect the state energy office to sequence HEEHRA first and Eversource second on the same invoice. The contractor files both forms; homeowner pays net of both rebates. Income-qualified Connecticut households under 80% AMI stand to net the largest effective discount in New England once both programs layer.

Application tips

Identify which state program your service address falls under before requesting quotes. Eversource service territory straddles all three state borders in places — Enfield CT vs Longmeadow MA uses different rebate schedules even for houses on the same road, because program assignment follows state lines, not utility lines.

In Connecticut specifically, document your household income with two years of tax returns if you are close to the 60% State Median Income adder threshold. The adder tier is large enough that qualifying for it can cut net install cost nearly in half, but PURA audits income claims more strictly than neighboring state programs.

Request a Home Energy Solutions (HES) audit before install in Connecticut — Eversource subsidizes the audit at near zero cost to the homeowner, and it pre-qualifies the property for the full Energize CT rebate schedule. Without the HES audit, some rebate tiers default to lower amounts or get delayed pending post-install verification.