Somerville, Massachusetts

Home Battery Backup in Somerville

Somerville CCE fixes supply prices through January 2028, while Eversource Basic Service jumped to 17.323¢ in August 2026. Neither one keeps the lights on when the feeder drops — and a battery's pay here comes from ConnectedSolutions, not the supply rate.

Get a Free Estimate Battery backup explained

Grid down, array under snow, solar at zero. The battery carries the critical load panel only, which is why runtime depends on which circuits are on it.

Home battery backup system installed in a garage

Somerville CCE 13.220–16.060¢ to Jan 2028 · Eversource Basic 17.323¢ · ConnectedSolutions $275/kW.

The short answer

Somerville is Eversource territory. Supply for most homes runs through Somerville Community Choice Electricity: 13.220¢, 14.840¢ (default) or 16.060¢ per kWh, fixed until January 2028 meter reads. Eversource's own Basic Service moved from 15.065¢ to 17.323¢ at the August 2026 reset.

A battery doesn't change either number. What it earns in Somerville is ConnectedSolutions — $275 per kW of average summer-event contribution — and what it buys is power when Eversource's lines are down. Size it to the circuits that must stay on, not to the supply price.

Get a Free Estimate

Tell us your Somerville address, how the house is heated and what must stay on in an outage. We confirm Eversource delivery, check where a battery can legally go on your lot and walk through ConnectedSolutions before anyone sizes a system.

Why Somerville is different from the Newton and Medford pages

Newton's aggregation publishes one price; Medford sits on National Grid. Somerville publishes three Eversource-area prices — and a Basic Service swing that shows why they exist.

Three fixed supply prices through January 2028

Somerville CCE lists Somerville Basic at 13.220¢/kWh, Somerville Local Green (the default) at 14.840¢ and 100% Local Green at 16.060¢, fixed from December 2024 until January 2028 meter reads.

Basic Service moved 2.26¢ in one reset

The City's July 2026 opt-out notice listed Eversource residential Basic Service at 15.065¢ for February–July 2026; the CCE site lists 17.323¢ for August 2026–January 2027. Basic Service resets every six months.

Rate tools that aren't batteries

The CCE site points residents to Eversource's 42% low-income discount, which applies to the whole bill, and to the heat-pump delivery rate that began November 1, 2025. Check both before sizing anything.

What a Somerville battery actually has to do

Program pay is seasonal. Backup is whenever the feeder drops.

ConnectedSolutions pays $275 per kW

Mass Save's ConnectedSolutions pays $275 per kW of a battery's average contribution during summer events. Its own example: a battery that holds 5 kW through events could earn up to $1,375 a year.

Up to 60 events, 3–8 p.m., June through September

Events run on non-holidays from June 1 to September 30, no more than 60 a summer and up to three hours each. Reserve settings still need to leave stored energy for an outage.

Aggregation changes price, not restoration

The City's aggregation plan says Eversource still maintains the poles and wires, reads the meter and responds to outages. Supply choice doesn't change what happens when a feeder drops.

Solar credits stay put

Somerville CCE states that solar customers keep their net metering credits while in the program, so adding a battery to an existing system doesn't mean leaving the CCE.

Somerville next to Cambridge, Medford and Newton

Next door in Cambridge, dense two- and three-family lots make battery siting the binding constraint — the same question applies on many Somerville streets. Medford is on National Grid with a $7,500 ConnectedSolutions+ offer, and Newton is Eversource under a single Newton Power Choice price. Somerville's water story is on Somerville water quality.

Where these figures come from

Everything on this page traces to the City of Somerville's CCE program and Mass Save.

Somerville Community Choice Electricity — the three product prices through January 2028, Eversource Basic Service for Aug 2026–Jan 2027, net metering, the low-income discount and the heat-pump rate.
City of Somerville — Municipal Aggregation Plan, D.P.U. 16-95 (revised July 2026, PDF) — 2017 launch, Eversource's role in outages, and the Feb–Jul 2026 Basic Service price.
Mass Save — Battery Storage (ConnectedSolutions) — $275/kW, event limits and hours, eligibility and HEAT Loan financing.

What a home battery job with us covers

Installation of storage and the backup circuits behind it, with the siting and utility paperwork handled.

Battery installation
Wall or floor-mounted storage installed to the listing and to the residential code sections that govern where it may go.
Backup and critical load panel
Deciding and wiring which circuits stay live, and which must never be on backup — the choice that defines what an outage feels like.
Integration with existing PV solar
Connecting storage to an array that is already on the roof, including whether the existing inverter supports it.
Transfer switch and disconnection
The equipment that separates the house from the grid during an outage, which is what makes backup legal as well as possible.
Siting to code
Location, clearances, separation and impact protection assessed against the adopted code before anything is mounted.
Permit, inspection and utility approval
The electrical permit, the inspection, and the utility's own approval step where storage touches the service.

This is installation work. No runtime, capacity or incentive figure is quoted before your loads and your utility are confirmed. Coverage is confirmed per service area rather than promised as blanket availability.

What the work actually looks like

A battery job is an electrical job. The panel, the circuits and the disconnection are most of it.

A wall-mounted inverter above a stack of home backup batteries in a utility room — Where the unit can go is a code question before it is a preference — clearances, separation and impact protection.

An electrician examining an open residential electrical panel with a flashlight — Which circuits stay live in an outage is decided at the panel, and it is the decision homeowners regret getting wrong.

Two people in work clothes reviewing plans on a tablet inside a house under renovation — Scope agreed in writing before work starts — what is included, what is not, and who is accountable for it.

Somerville battery backup, answered plainly

Who is the electric utility in Somerville?+

Eversource delivers electricity, maintains the wires and restores outages. Most residents buy supply through Somerville Community Choice Electricity, which shows on the Eversource bill as the supplier.

What are Somerville CCE's rates?+

Somerville Basic 13.220¢/kWh, Somerville Local Green (the default) 14.840¢ and Somerville 100% Local Green 16.060¢, fixed from December 2024 until January 2028 meter reads. Prices include a $0.001/kWh consultant fee and cover supply only.

Does a battery change my Somerville CCE rate?+

No. The CCE sets your supply price; a battery doesn't change it. What a battery can add is ConnectedSolutions pay for discharging during summer peak events, and backup power when Eversource's lines are down.

What does ConnectedSolutions pay in Somerville?+

Mass Save lists $275 per kW of average contribution during summer events, with up to 60 events between 3 and 8 p.m. from June 1 to September 30. Batteries can be added with new solar, to existing solar, or stand-alone.

Is there financing?+

Mass Save's 0% HEAT Loan lists batteries as eligible for up to $25,000 in financing. We confirm eligibility with the program rather than quoting a monthly payment.

Who installs it, and who is responsible afterwards?+

Seamless Home is the licensed contractor of record on the work it runs. Installation is performed by vetted installing partners engaged as our subcontractors. Coverage is confirmed per service area rather than promised as blanket availability.

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