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Home Battery Cost in Cambridge, Massachusetts

Local pricing, rebates, backup hours, and outage data for Cambridge homeowners.

15 hrs

Backup (essentials)

7 hrs/yr

Avg Outages

$15,000

Net Cost

$838

Bill Savings/yr

Home Batteries in Cambridge: What to Know

Cambridge averages about 7 hours of grid outages a year, which is the main reason homeowners here install storage. A standard 13.5 kWh battery runs your essentials (fridge, lights, internet) for roughly 15 hours and installs for around $16,500 — or about $15,000 after the local rebate of up to $1,500.

On bills, a battery in Cambridge saves about $838 a year by storing cheap power and using it at peak times (a $0.21/kWh local peak-to-off-peak gap), or roughly $589 over 15 years. Note: the 30% federal battery tax credit expired at the end of 2025, so Massachusetts state and utility programs are now the main incentives. The local utility is Eversource MA. Most homeowners buy storage for resilience first — the bill savings are a bonus.

Cost & Backup Breakdown

Standard 13.5 kWh battery in Cambridge

Battery Size

13.5 kWh

Installed Cost

$16,500

State/Utility Rebate

-$1,500

Net Cost

$15,000

Backup (essentials)

15 hrs

Avg Outages

7 hrs/yr

Bill Savings/yr

$838

15-Year Savings

$589

15-Year Bill Savings Projection

Time-of-use arbitrage only — the backup/resilience value is on top of this.

Available Rebates

Up to $1,500

Massachusetts State/Utility Program — Massachusetts' ConnectedSolutions pays recurring demand-response credits (~$225–$1,500/yr) for letting the utility tap your battery during peaks.

Federal 25D Credit — The 30% federal battery tax credit expired Dec 31, 2025.

View all Massachusetts rebates →

Common Questions

How much does a home battery cost in Cambridge?

A standard 13.5 kWh home battery in Cambridge, Massachusetts costs about $16,500 installed, or about $15,000 after the state/utility rebate of up to $1,500. The federal 25D battery credit expired December 31, 2025.

How much backup power does a battery give in Cambridge?

A 13.5 kWh battery runs a Cambridge home's essentials for about 15 hours. Cambridge averages roughly 7 hours of grid outages a year, so a single battery covers most events.

Will a battery save money in Cambridge?

On time-of-use bills, a 13.5 kWh battery saves about $838 per year in Cambridge — around $589 over 15 years. Most Cambridge homeowners buy a battery primarily for backup power; the bill savings are a bonus.