Based on: 40 kWh/day usage · 14 kW solar · 5 kWh battery · typical tariffs

Solar & Battery Savings in Massachusetts, United States Get quotes from local installers

Design solar and battery systems for Massachusetts using Photonik's professional design platform. Massachusetts combines high retail electricity rates with strong net metering export compensation and SMART program incentives. Eversource, National Grid, and Unitil serve most homeowners. Winter snow reduces winter output but summer production is solid.

Compare solar savings and payback across US states →

Solar Energy Savings in Massachusetts

How Solar Reduces Your Electricity Bills

The calculations below show how your electricity bills change with solar.

Calculating...

Based on: 40 kWh/day usage · 14 kW solar · 5 kWh battery · typical tariffs

Adjust these amounts in the next section

Old Bill (Before Solar): Monthly: 264.0 | Annual: 3168.0

New Bill (With Solar): Monthly: 117.0 | Annual: 1407.0

Monthly Savings: $ 147.0 | Annual: $1761.0 | Bill Savings: 56%

Monthly Savings

$ 147.0

Annual savings: $1761.0 | Bill Savings: 56%

What drives your savings in Massachusetts

Massachusetts retail rates average around 22c/kWh with strong net metering export near 20c/kWh — one of the narrowest retail/export gaps in the country, supporting both self-consumption and surplus export. The SMART programme provides declining-block incentive payments for qualified systems. Moderate solar irradiance (~4 kWh/m²/day) and winter snow reduce seasonal output, but high rates drive attractive payback periods — especially on Eversource and National Grid territories.

Panel Placement Tool Massachusetts

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This is a simplified panel layout tool — if you hit issues here, or need multiple groups, shading, or generation calcs, use the full Photonik design tool.

Your usage & system size Massachusetts

Energy usage & tariffs

Energy consumption patterns in Massachusetts reflect the state's humid subtropical climate, with high cooling needs during hot summers. The average Massachusetts household uses between 30-40 kWh per day, with higher consumption during summer months for air conditioning. Energy-efficient properties throughout Massachusetts often use significantly less through modern insulation, efficient HVAC systems, and smart thermostats.

Before installing solar, consider reducing your energy consumption through improved insulation and energy-efficient appliances. This is particularly valuable in Massachusetts, where reducing consumption can lower required solar system size and improve returns.

Daily Energy Usage: 40 kWh (~$264.0/month)

5 kWh 100 kWh

Electricity Cost

$ /kWh

Sell Price (FiT)

$ /kWh

Self Use %

lightbulb Note: These are simplified estimates. For detailed tariff inputs and advanced calculations, use the full Photonik app.

Representative flat export rate (feed-in tariff). What you earn per kWh of surplus solar exported to the grid. Your actual rate depends on your provider, plan, and time of day.

See how export rates work →

Estimated at 75% of the retail grid rate. A battery lets you store daytime solar and export during expensive peak hours, so each exported kWh is typically worth more than a flat feed-in tariff. Real returns depend on your time-of-use tariff and battery efficiency.

See how export rates work →

Solar system size

You'll need around 10.5kW of solar to match your average consumption in Massachusetts. We recommend sizing between 15.8kW and 21.1kW for optimal results, accounting for daily and seasonal variations. Massachusetts has good solar potential, with most regions averaging 3.5-4.5 kWh/kW/day annually.

A 15.8 kW system in Massachusetts generates approximately 64.8 kWh daily on average, with seasonal variation from 2.92 kWh/kW/day in December to 4.75 kWh/kW/day in August. Massachusetts's solid solar irradiance and favourable net metering make solar attractive for homeowners across the state.

Solar System Size: 14 (57 kWh/day)

1 kW 20 kW

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A 14 kW system in Massachusetts can generate approximately 20959.0 kWh annually based on local sun conditions.

Battery storage

With solar-only (no battery), a 15.8 kW system provides approximately 50% self-usage in Massachusetts, depending on your consumption patterns, drawing 50% from the grid. Adding a 10 kWh battery increases energy independence to approximately 72% annually, reducing grid reliance to 28%. Battery storage is valuable in Massachusetts, allowing you to store excess summer generation for evening use and providing backup power during outages.

A battery shifts solar energy from daytime overproduction into evening peak use. For accurate battery savings and ROI calculations specific to your utility, use the full Photonik design tool.

Battery Size: 5 kWh

0 kWh 30 kWh

lightbulb A 0kWh battery will make you about 0% self sufficient.

The sweet spot for most households is 5 – 13 kWh — larger batteries add independence but with diminishing payback, especially where feed-in tariffs are low.

System Pricing & Payback for Massachusetts

Use the full Photonik solar planning and design platform to model a complete system for your home — including detailed costs, equipment options, and financial returns.

Try Photonik Solar Design

For a quick price guide, see the United States solar calculator.

Solar Installers Boston

Boston sits in Eversource territory with retail rates around 22c/kWh and strong net metering export (~20c/kWh). Triple-deckers, flat roofs, and mature tree canopy in Dorchester, Jamaica Plain, and Roslindale limit usable area — south- and west-facing exposures matter. SMART programme incentives can stack with high rates; winter snow reduces output December–February.

Example local businesses with published addresses; not ranked by Photonik or by star ratings.

Pope Energy — 42 8th Street, Suite 4413B, Boston, MA 02129
Team Sunshine, Inc. — 24 Spice St, Suite 205, Boston, MA 02129