Generator Backup for Solar Systems

When the sun is not enough, a generator keeps your system running.

SRsolarNH integrates generator backup into new and existing solar arrays for homeowners across New Hampshire, Maine, Massachusetts, and beyond.

How We Do It

What You Get with Every Install

Seamless Integration

We integrate generator backup directly into your solar system so it activates automatically when your battery reserves run low, or demand exceeds what your panels can produce.

Compatible with New and Existing Systems

Adding a generator backup does not require starting over. We can integrate it into your current array, regardless of who originally installed it.

Full Permitting and Paperwork

We handle all permits, utility notifications, and paperwork from start to finish.
Generator Backup

Always on. No matter what.

A solar panel system generates clean energy when the sun is out. But outages, storms, and extended cloudy periods can push even a well-sized battery bank to its limits. A generator provides the layer of backup that keeps your home powered through those stretches, regardless of the cause.

Generator backup works with both grid-tied and off-grid systems, and can be added to new builds or existing arrays.

How it works:

Your solar panels charge your battery bank during the day

When battery reserves drop below a set threshold, the generator activates automatically

Once reserves are back up, the generator shuts off

No manual intervention required

When does generator backup make sense?

Every property is different. Here is a quick guide to help you figure out if generator backup makes sense for yours:

Situation

Generator Backup Recommended

Off-grid system
Yes, essential for extended low-sun periods
Grid-tied with battery storage
Yes, for additional failsafe coverage
Rural or remote property
Yes, grid outages can last days
On-grid with frequent outages
Yes, provides reliable backup regardless

Generator backup vs. battery storage alone:

Both battery storage and generator backup keep your home powered when your panels are not producing. The difference is how long and under what conditions:

Battery Storage

Battery + Generator

Best for
Day-to-day gaps, short outages
Extended outages, prolonged cloudy periods
Fuel required
No
Yes (propane or diesel)
Coverage
Limited by battery capacity
Unlimited, generator recharges batteries
Ideal for
Grid-tied systems
Off-grid and rural properties

Battery Storage

Best for

Day-to-day gaps, short outages

Fuel required

No

Coverage

Limited by battery capacity

Ideal for

Grid-tied systems

Battery + Generator

Best for

Extended outages, prolonged cloudy periods

Fuel required

Yes (propane or diesel)

Coverage

Unlimited, generator recharges batteries

Ideal for

Off-grid and rural properties

For most homeowners on grid-tied systems, battery storage alone covers the basics. For off-grid properties or anyone who wants complete coverage with no gaps, adding a generator is the most reliable solution available.

How it Works

Simple process. No surprises.

Step 1

Request a Quote

Tell us about your current system or your plans for a new one. We will take it from there.

Step 2

Custom System Design

We assess your energy usage, your existing setup, and your goals, then design a generator integration sized for your specific needs.

Step 3

Permitting and Approval

We handle all permits, utility notifications, and any required inspections. You do not have to lift a finger.

Step 4

Installation

Our team installs and commissions your generator backup and makes sure everything is running correctly before we leave.

Trusted by Homeowners Across New Hampshire, Maine, and Massachusetts

15+ years of collective installation experience across NH, ME, and MA

Master Electrician on every project

EnergySage Installer of the Year 2025 and 2026

Union Leader Readers' Choice Award 2024 and 2025

Full permitting and utility paperwork handled

Ready to Put Your Roof to Work?

Get a free, no-obligation quote, and we will design a solar system that fits your home and your energy goals.

With 15+ years of collective experience installing across New England and beyond, we know how to build it right.