Home Battery Installation in Boston, MA
Eversource customers averaged 81 minutes without power in 2024 — far below the US average of 11 hours. Sustained outages are rarer here than in most of the country, but storm and equipment-driven interruptions still happen — and homeowners with medical equipment, a home office, a well pump or a sump pump often want backup regardless of the average. Below are battery installers serving Boston and the rest of Suffolk County, ranked by reputation.
How often the power actually goes out in Boston
2024 · EIA data81 minutes
average time a Eversource customer spent without power
12%
of the US average of 11 hours — better than typical
0.7
power interruptions per customer that year
Excluding major event days — hurricanes, ice storms and the like — the figure drops to 66 minutes. The gap between the two is the part a standby generator or home battery is really for.
Source: US Energy Information Administration, Form 861 reliability filing for NSTAR Electric Company (IEEE 1366 methodology). SAIDI measures the average minutes a customer was without power across the year. National reliability in 2024 was heavily affected by Hurricanes Beryl, Helene and Milton.
93
GridFree Score
★★★★ 4.8 · 1031
92
GridFree Score
★★★★ 4.7 · 1360
3.Tesla Boston Boylston Street
EliteTesla showroom
Tesla Powerwall
91
GridFree Score
★★★★ 4.5 · 370
4.EHC Inc Electrical Heating Cooling
EliteHVAC contractor
90
GridFree Score
★★★★ 4.8 · 266
5.Metro Energy - M & T Oil Co.
Top ratedHeating oil supplier
87
GridFree Score
★★★★ 4.9 · 96
6.Boston Cell Phone Repair
Top ratedMobile phone repair shop
83
GridFree Score
★★★★★ 5 · 22
79
GridFree Score
★★★ 3.9 · 240
8.Car Key Replacement Boston
Repair service
71
GridFree Score
★★★★★ 5 · 56
64
GridFree Score
★★★★ 4.5 · 2
10.Tesla Energy Marlborough
Solar energy equipment supplier
Tesla Powerwall
62
GridFree Score
★★★ 3.4 · 15
58
GridFree Score
★★★ 3 · 29
12.Tesla Solar
Solar energy equipment supplier
Tesla Powerwall
57
GridFree Score
★★★ 3 · 4
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Get listed →Frequently asked questions
How much does a home battery cost in Boston?
A 13.5 kWh home battery like the Tesla Powerwall 3 typically runs $12,000–$17,000 installed before the 30% federal tax credit, which brings the net cost to roughly $8,400–$11,900. Larger multi-battery systems scale from there.
Do I need a permit for a battery in Boston, MA?
Almost everywhere, yes. A home battery needs an electrical permit and must meet fire-code setbacks, and most states require the work be done by a licensed contractor. A reputable Boston installer pulls the permit for you — treat anyone who offers to skip it as a red flag, since unpermitted work surfaces at resale and can void insurance claims.
Who installs home batteries in Boston?
Licensed electrical and solar contractors handle home battery installs. Tesla, Enphase and FranklinWH each maintain certified-installer networks that include Boston-area contractors.
Why are outages common around Boston?
Eversource customers averaged 81 minutes without power in 2024 — far below the US average of 11 hours. Sustained outages are rarer here than in most of the country, but storm and equipment-driven interruptions still happen — and homeowners with medical equipment, a home office, a well pump or a sump pump often want backup regardless of the average.
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