Solar Battery Rebate Massachusetts: Complete Guide for 2026
Home batteries are becoming essential for solar owners and anyone wanting backup power. Here's how to get the most from Massachusetts solar battery incentives—including programs that pay you every year just for owning a battery.
Key Takeaways
- Federal 30% tax credit covered batteries charged from solar — ended 31 Dec 2025
- ConnectedSolutions pays $275 per kW of average contribution—a 10 kWh battery earns $2,500+/year
- SMART program offers additional incentives for batteries paired with solar
- Combined incentives can offset 50-70% of battery costs over time
Looking for a solar battery rebate in Massachusetts? While the state doesn't offer a traditional upfront rebate, it has something potentially better: programs that pay you year after year for owning a battery.
Between ConnectedSolutions annual payments and SMART program incentives, Massachusetts homeowners can still recover a significant portion of their battery investment—often while enjoying backup power and lower electricity bills. It takes longer than it did through 2025, when the federal 30% credit came off the price up front.
Massachusetts Solar Battery Incentives Overview
Here's a summary of every solar battery rebate and incentive available to Massachusetts homeowners in 2026:
2026 Battery Storage Incentives
| Program | Amount | Type | Notes |
|---|---|---|---|
| Federal Tax Credit (25D) | Repealed 31 Dec 2025 | Ended | Was 30% of cost; battery had to charge from solar/renewable |
| ConnectedSolutions | $275 per kW/year | Annual | Paid on average contribution during summer events, not stored kWh |
| SMART Adder | Varies by utility | Ongoing | For batteries paired with new solar |
| MA State Tax Credit | 15% up to $1,000 | One-time | For solar installations |
ConnectedSolutions: Get Paid to Own a Battery
ConnectedSolutions is Massachusetts' flagship battery incentive program, and it's one of the best in the country. Here's how it works:
You enroll your battery in a "demand response" program. During peak electricity demand (hot summer afternoons, typically), your utility sends a signal asking your battery to discharge to the grid. In exchange, you receive annual payments based on your battery's capacity.
What You Get
- $275 per kW of average contribution, not per kWh stored
- 10 kWh battery = $2,250-$2,750/year
- 5-year payback on battery investment is possible
What's Required
- Compatible battery (Tesla, Enphase, LG, etc.)
- Participate in 30-60 demand events per summer
- Eversource, National Grid, or Cape Light Compact customer
Important: You Keep Backup Power
During demand response events, your battery discharges but you can set a reserve (typically 20-30%) to ensure you still have backup power. You won't be left without protection during an outage.
The Federal 30% Credit for Batteries (Ended 2025)
The Residential Clean Energy Credit (Section 25D) gave a 30% tax credit for battery storage, with one important requirement: the battery had to be charged primarily (80%+) from renewable sources like solar. The One Big Beautiful Bill Act (P.L. 119-21) repealed it for anything placed in service after 31 December 2025.
That meant a battery added to an existing solar system, or installed alongside one, qualified; a standalone battery charged from the grid generally did not. None of it applies to a 2026 installation.
Key Details
- Status: Repealed — last eligible date 31 December 2025
- Credit amount: was 30% of total installed cost (no cap)
- Requirement: had to be charged 80%+ from renewable sources
- Minimum capacity: 3 kWh
- How it was claimed: IRS Form 5695, for 2025 and earlier returns
Unlike 25C, No Annual Cap
The 25D credit for solar and batteries had no annual dollar limit, so a $15,000 battery system earned a $4,500 credit — unlike 25C for heat pumps and insulation, which was capped each year. Both were repealed effective 31 December 2025.
SMART Program Battery Adders
Massachusetts' Solar Massachusetts Renewable Target (SMART) program provides ongoing incentive payments for solar installations. If you add battery storage to a SMART-qualified solar system, you may receive additional "adder" payments.
The exact amount varies by utility territory and changes over time as the program evolves. Contact your solar installer to determine current SMART battery adder rates in your area.
Stacking Example: Real Savings on a Tesla Powerwall
Here's what the numbers look like for a typical Massachusetts battery installation:
Tesla Powerwall 3 (13.5 kWh) Example
* ConnectedSolutions is paid on average contribution during events, not on stored capacity, so a 13.5 kWh Powerwall delivering about 5 kW earns roughly $1,375 a year rather than a figure scaled to its kWh rating. Through 2025 the federal credit took another $4,500 off the top.
Best Batteries for Massachusetts Incentives
Not all batteries qualify for ConnectedSolutions. Here are popular options that work with Massachusetts programs:
Tesla Powerwall 3
13.5 kWh capacity, integrated inverter, sleek design. Most popular choice in Massachusetts.
- • ConnectedSolutions compatible ✓
- • 10-year warranty
- • ~$12,000-$15,000 installed
- • Excellent app and monitoring
Enphase IQ Battery
Modular system (3.3 kWh per unit), great for Enphase solar systems.
- • ConnectedSolutions compatible ✓
- • 10-year warranty
- • Scales from 3.3-40+ kWh
- • Best for Enphase microinverter systems
Franklin WholePower
13.6 kWh capacity, modular design, strong warranty.
- • ConnectedSolutions compatible ✓
- • 12-year warranty
- • Works with most inverters
- • Good value option
SolarEdge Home Battery
9.7 kWh capacity, designed for SolarEdge inverter systems.
- • ConnectedSolutions compatible ✓
- • 10-year warranty
- • Best for SolarEdge systems
- • Compact design
How to Get Started
Get Solar + Battery Quotes
Contact 2-3 solar installers and specifically ask about ConnectedSolutions-compatible batteries. Make sure they're familiar with Massachusetts incentive programs.
Verify Incentive Eligibility
Confirm your utility (Eversource, National Grid, Cape Light Compact) participates in ConnectedSolutions and check current payment rates.
Install & Enroll
After installation, your installer typically handles ConnectedSolutions enrollment. Enrollment must happen before the program season starts (usually June).
Filing for a 2025 Installation
If your system was placed in service on or before 31 December 2025, claim the 30% Residential Clean Energy Credit on IRS Form 5695 with that year’s return. Nothing installed in 2026 qualifies. Keep all invoices and documentation either way.
The Bottom Line
Massachusetts may not have a traditional upfront solar battery rebate, but ConnectedSolutions payments still make battery storage attractive: a 10+ kWh battery can pay for itself within 4-6 years on those payments alone. The federal credit that used to accelerate that was repealed on 31 December 2025.
Add in the backup power security, electricity bill savings, and potential SMART program adders, and batteries are becoming an increasingly smart investment for Massachusetts solar owners.
Ready to Add Battery Storage?
Explore Massachusetts solar and battery incentives, including ConnectedSolutions, SMART and the state Schedule EC credit.
Frequently Asked Questions
Is there a solar battery rebate in Massachusetts?
Yes. Massachusetts offers the ConnectedSolutions program, which pays $275 for each kW of your battery's average contribution during summer demand response events, and the SMART program, which provides ongoing incentive payments for the solar system. The federal 30% credit that used to apply to battery storage was repealed effective 31 December 2025 and is no longer part of the stack.
How much does a solar battery cost in Massachusetts?
A typical home solar battery (10-15 kWh capacity) costs $10,000-$20,000 installed in Massachusetts. ConnectedSolutions payments accumulate over several years and can recover a large share of that. The federal 30% credit that used to cut the upfront cost immediately was repealed effective 31 December 2025, so 2026 installations start from the full price.
Can I get a battery rebate without solar panels?
Yes. Massachusetts ConnectedSolutions payments are available whether or not you have solar, as long as you enrol the battery and it responds during demand response events. This used to be the main distinction from the federal 30% credit, which required the battery to be charged primarily from renewable sources — but that credit was repealed effective 31 December 2025.
What is ConnectedSolutions and how does it work?
ConnectedSolutions is a demand response program where utilities pay you to discharge your battery during peak demand events (typically 30-60 events per summer). You receive $275 per kW of average contribution during those events, which is power delivered rather than stored capacity. Mass Save's worked example: a battery contributing 5 kW earns up to $1,375 a year.
How long do solar batteries last?
Most solar batteries are warrantied for 10 years or a certain number of cycles (typically 4,000-6,000). With proper use, many batteries last 15+ years. The Tesla Powerwall, LG RESU, and Enphase IQ batteries are popular choices in Massachusetts with strong warranties.