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National Grid customers in Central and Southeast MA can stack $8,500 Mass Save + a $0.19/kWh HP electric rate (Nov-Apr) + 0% HEAT Loan financing. The federal 25C tax credit is expired.
National Grid serves ~25% of MA customers across several regions. All National Grid residential customers are eligible for Mass Save heat pump rebates, the HP electric rate, and ConnectedSolutions battery incentives.
Central MA (Worcester, Shrewsbury, Leominster)
Southeast MA (Brockton, Fall River, New Bedford)
South Shore (Plymouth, Wareham)
Berkshires & Western MA (Pittsfield, Greenfield)
Not sure if you are a National Grid customer? Check your electric bill for "National Grid" as the distribution company, or call 800-322-3223. If you are served by Eversource, the same Mass Save rebates apply but rates differ slightly. Compare Eversource vs. National Grid rates.
Mass Save is a statewide program. National Grid customers receive the same rebate amounts as Eversource and other participating utilities. Rebates are based on system tonnage and how much of your heating load the heat pump covers.
Heat pump serves as primary heating source for entire home.
Cap: $8,500 maximum
Heat pump supplements existing furnace or boiler. Keep backup system.
Cap: $8,500 maximum
Single-zone or supplemental room heating.
Cap: $2,500 maximum
Earned when your system is properly sized via Manual J load calculation. NuWatt includes Manual J at no additional cost.
Available when insulation or air sealing work is completed within 12 months of heat pump installation.
Federal 25C Tax Credit: EXPIRED. Section 25C ended December 31, 2025. There is $0 in federal tax credits for heat pump purchases in 2026. Mass Save rebates and the 0% HEAT Loan are available now.
National Grid offers a discounted electricity rate for heat pump owners during the 6-month heating season. This ongoing savings reduces your operating costs every winter.
November 1 - April 30
Standard Rate
$0.28
/kWh
HP Rate
$0.19
/kWh
Monthly Savings
$45-$90/mo
$540-$1,080 over heating season
Install Your Heat Pump
Have a qualifying cold-climate heat pump professionally installed. Keep all documentation.
Contact National Grid
Call 800-322-3223 or visit the National Grid website to request the HP rate.
Submit Documentation
Provide installer invoice, equipment model/serial numbers, and AHRI cold-climate certificate.
Verification & Approval
National Grid reviews documentation and may schedule a verification visit (2-4 weeks).
Rate Applied Automatically
Once approved, the discounted rate applies every Nov-Apr. No annual renewal needed.
How Much Do National Grid Customers Save?
A typical 3-ton heat pump used as the primary heating source consumes 500-1,000 kWh/month extra during heating season. At the $0.09/kWh discount ($0.28 standard minus $0.19 HP rate), that translates to $45-$90/month in savings, or $540-$1,080 over the full 6-month heating season.
National Grid pays battery owners for dispatching stored energy during peak demand events. Pair a battery with your heat pump for backup power and ongoing revenue.
Summer Rate
$225
per kW (Jun-Sep)
Winter Rate
$50
per kW (Dec-Mar)
10 kW Battery (annual)
$2,750
per year
Your Backup Power Is Protected
You set a backup reserve level (typically 20-30%) that ConnectedSolutions will never discharge below. Events are capped at 60 hours per year and only occur during normal grid operations. During actual power outages, your battery powers your home as designed.
Read the full ConnectedSolutions guide for qualifying batteries, enrollment details, and stacking with SMART 3.0.
Here is every incentive a National Grid customer can access when installing a heat pump in 2026. Upfront rebates reduce your out-of-pocket cost, while ongoing savings compound year after year.
| Incentive | Amount | Type |
|---|---|---|
Mass Save Whole-Home Rebate (3 tons) | $7,950 | Upfront Rebate |
Sizing Bonus (Manual J) | $500 | Upfront Rebate |
Weatherization Bonus | $500 | Upfront Rebate |
HP Electric Rate Savings (per season) | $540-$1,080/yr | Ongoing Savings |
ConnectedSolutions Battery Revenue (10 kW) | $2,750/yr | Ongoing Savings |
Maximum Upfront Incentives
$8,950
$7,950 (Mass Save) + $500 (sizing) + $500 (weatherization) = $8,950. Plus $540-$1,080/yr HP rate savings + $2,750/yr ConnectedSolutions.
After rebates, finance your remaining cost at 0% interest through the Mass Save HEAT Loan. Available to all National Grid customers regardless of income.
Interest Rate
0%
Zero interest. The amount you borrow is the amount you repay.
Maximum Amount
$25,000
Covers most installations after rebates are applied.
Terms
3-7 yr
7 years (below 135% SMI), 5 years (135-300%), 3 years (above 300%). No payments for first 3 months.
Example: A whole-home heat pump system costs $16,000 installed. After $8,950 in Mass Save rebates and bonuses (standard income), you finance $7,050 at 0% for 7 years = about $84/month. Income-eligible households may qualify for enhanced Mass Save coverage, reducing their net cost further.
Enter your system details to estimate your total incentives. Results include Mass Save rebates, bonuses, and monthly HEAT Loan payments.
3 tons
0% interest. No payments first 3 months.
Estimates based on Mass Save 2026 program rates. Actual rebate determined at time of installation. Federal 25C tax credit expired Dec 31, 2025 — not included.
Note: Calculator estimates are based on published 2026 Mass Save program rates. The federal 25C tax credit expired December 31, 2025 and is not included. Actual rebate amounts are confirmed at time of installation.
Getting your National Grid heat pump rebate is straightforward. NuWatt handles the paperwork for you.
Week 1
NuWatt assesses your home, performs Manual J load calculation, and recommends the right system size and rebate tier.
Week 2-3
We submit your Mass Save rebate application to lock in your rebate amount and set up your 0% HEAT Loan.
Week 4-8
Professional heat pump installation by NATE-certified technicians. 1-3 days depending on system type.
Week 8-14
We help you enroll in the National Grid HP electric rate and your rebate is disbursed 4-6 weeks after install.
Common questions about National Grid heat pump rebates and incentives in Massachusetts.
National Grid administers the statewide Mass Save heat pump rebate program. In 2026, the tiers are: Whole-Home at $2,650 per ton (max $8,500), Partial at $1,125 per ton (max $8,500), and Basic at $250 per ton (max $2,500). These are the same rebate amounts as Eversource because Mass Save is a statewide program. National Grid also offers a heat pump electric rate discount and ConnectedSolutions battery demand response payments.
National Grid offers a discounted electricity rate of approximately $0.19/kWh for homes with qualifying heat pumps during heating season (November 1 through April 30). The standard National Grid residential rate is approximately $0.28/kWh. This translates to savings of $45-$90 per month during the 6-month heating season, or $540-$1,080 total per season depending on usage.
After your heat pump is installed, contact National Grid at 800-322-3223 or visit the National Grid website. You will need to provide proof of installation including the installer invoice, equipment model and serial numbers, and AHRI certification showing cold-climate rating. National Grid may schedule a verification visit. Once approved, the rate is applied automatically each November through April.
National Grid serves approximately 25% of Massachusetts residential customers. Their territory includes Central MA (Worcester, Shrewsbury, Leominster), Southeast MA (Brockton, Fall River, New Bedford), South Shore (Plymouth, Wareham), and Western MA/Berkshires (Pittsfield, Greenfield). If you are unsure of your utility, check your electric bill or call National Grid at 800-322-3223.
ConnectedSolutions is a battery demand response program. National Grid pays battery owners $225 per kW in summer (June-September) and $50 per kW in winter (December-March). A 10 kW battery (like a Tesla Powerwall 3) earns approximately $2,750 per year. Events are capped at 60 hours per year and you keep a backup reserve for outages.
No. The federal Section 25C Energy Efficient Home Improvement Credit expired on December 31, 2025. There is $0 in federal tax credits for heat pump purchases in 2026. Mass Save rebates (up to $9,500 with bonuses) and the 0% HEAT Loan are available now.
Yes. The Mass Save HEAT Loan provides 0% interest financing up to $25,000 and is available to all Massachusetts utility customers including National Grid. Terms are income-tiered: 7 years (below 135% SMI), 5 years (135-300% SMI), or 3 years (above 300% SMI). No payments for the first 3 months. The loan covers your net cost after all rebates are applied.
NuWatt handles everything: Manual J sizing, Mass Save application, HEAT Loan setup, and National Grid HP rate enrollment. One call to start saving.
Complete guide to all Mass Save rebate tiers and HEAT Loan.
Read moreSide-by-side comparison of heat pump electric rates from both utilities.
Read moreFull guide to battery demand response earnings and qualifying systems.
Read moreWhat a heat pump costs in Massachusetts by system type and home size.
Read moreBest models for New England winters with R-32/R-454B refrigerant.
Read moreHow to evaluate heat pump installers in the National Grid territory.
Read moreMass Save 2026 heat pump rebate program: masssave.com, effective January 2026.
National Grid R-2 Heating tariff schedule, effective November 2025.
Mass Save: masssave.com, Massachusetts Clean Energy Center.
ConnectedSolutions: National Grid demand response program, 2026 rates.
Section 25C expiration: One Big Beautiful Bill Act (OBBBA), signed July 4, 2025.