ConnectedSolutions Battery Program in Massachusetts, Explained (2026)
Program details checked on masssave.com on November 10, 2026.
Short answer: ConnectedSolutions is the Mass Save battery program. Your utility pays you $275 per kW for your battery’s average contribution during summer peak events. A typical battery that can deliver 5 kW during events earns up to about $1,375 a year, and the battery still backs up your home during outages.
How ConnectedSolutions works
- On the hottest days, when the grid is most strained, your Mass Save Sponsor (Eversource, National Grid or Cape Light Compact) sends a signal to your battery to discharge.
- Events happen on non-holidays between June 1 and September 30, between 3:00 and 8:00 p.m.
- There are no more than 60 events per summer, and each lasts up to three hours.
- You are paid for your battery’s average contribution (in kW) across those events.
How much you can earn
| Average contribution during events | Summer payment at $275/kW |
|---|---|
| 3 kW | $825 a year |
| 5 kW (typical home battery, per Mass Save) | $1,375 a year |
| 10 kW (two batteries) | $2,750 a year |
Actual payments depend on how much your battery delivers during each event. National Grid’s program materials say the per-kW rate for new installations is set for the first five consecutive years.
Who can join
- Customers of Eversource, National Grid or Cape Light Compact. Homes served by a municipal light plant (for example Taunton, Peabody, Wellesley or Holyoke) are generally not eligible, because they do not pay into the Mass Save energy efficiency fund. Check with your light department.
- A battery from one of the program’s participating manufacturers. Nexis installs FranklinWH and Tesla Powerwall systems, among others.
Does it affect my backup power?
Events happen on summer afternoons, not during outages. During an outage, the battery runs your essentials as usual. Before you enroll, we go over how much charge your battery keeps in reserve for backup and how events affect it.
Paying for the battery
Home batteries are eligible for 0% financing through the Mass Save HEAT Loan, according to Eversource. Combined with ConnectedSolutions income, many homeowners offset a meaningful part of the cost over time. A battery paired with solar can also earn more under Massachusetts’ SMART program; we include it in your proposal when it applies.
How to sign up
- Choose an eligible battery and an installer. See our home battery storage options.
- After installation, enroll with your utility through ConnectedSolutions. We help you complete the enrollment.
- Your battery responds to events automatically, and your utility pays you based on its average contribution over the summer.
Thinking about solar too? See solar + battery backup and how much solar costs in Massachusetts. Or book a free assessment and we will estimate your ConnectedSolutions income before you decide.
Sources
- Mass Save, Battery Storage (ConnectedSolutions): masssave.com/residential/rebates-offers-services/battery-storage-and-evs/batteries
- National Grid, Program Materials for ConnectedSolutions for Small Scale Batteries (March 2026): nationalgridus.com
- Eversource, Battery Storage Demand Response: eversource.com