Solar Battery Backup in NH — Keep the Lights On When the Grid Goes Down

When the grid goes down in New Hampshire, most solar systems shut off automatically. It is a code requirement to protect utility workers, which means you can have panels on your roof and still sit in the dark.

A solar battery backup changes that equation. It stores the energy your panels produce and keeps your home running through an outage automatically, with no action required on your end. SRsolarNH installs solar battery storage across NH and provides an honest assessment of what makes sense for your specific home.

Battery Options We Install

SRsolarNH installs a range of proven solar battery storage systems. Every recommendation is based on your home’s specific load requirements, your existing setup, and your goals. 

The right solar battery depends on your system size, how much coverage you need, and whether you are looking for partial-load or whole-home backup.

Battery

Best For

Tesla Powerwall

Whole-home or critical-load backup, clean integration, proven track record

SigEnergy Systems

Scalable storage for higher-demand homes and larger systems

Franklin Whole Home Battery

Scalable storage for higher-demand homes and larger systems

Enphase

Homes already running Enphase microinverters, modular expansion

EG4 Batteries

Off-grid and hybrid systems, robust performance at a practical price point

Discover

Deep-cycle applications, off-grid and backup use

Univix Lead Carbon

Off-grid systems where lithium isn't the right fit

Not sure which battery is right for your home? We will help you figure that out during your free consultation.

Why NH Homeowners Choose SRsolarNH for Battery Backup

There is no shortage of companies offering solar battery storage in NH. What separates SRsolarNH is the depth of experience behind every install, particularly in off-grid and backup configurations that require more than a basic grid-tied setup with a battery added on. 

400+ Installs

EnergySage Installer of the Year 2025 and 2026

Union Leader’s Best Of 2024 and 2025

Off-Grid Experts

25-year workmanship and labor warranty

Every Home Is Different. Get a Design Built for Yours.

Tell us about your property and your goals. We will design a solar battery system around what your home actually needs, with no guesswork and no pressure.

How Solar Battery Storage Works

Understanding how solar panel battery storage works helps you make a better decision before you commit. Here is the full picture, from the moment your panels produce energy to the moment an outage hits.

  • Your panels generate electricity during daylight hours
  • Excess energy that your home does not immediately use charges your battery bank instead of going back to the grid
  • At night or during periods of low production, your home draws from the battery first
  • When an outage hits, your system switches to battery power automatically, in milliseconds, with no manual intervention required
  • As long as your panels are producing during the day, the battery keeps recharging, extending your coverage through multi-day outages

Without a battery, a solar system produces zero usable power during a grid outage. Pairing solar with storage is what makes the system genuinely resilient, not just efficient.

See Our Work

What Can You Power With a Solar Battery Backup?

The answer depends on how many batteries you install and which loads you designate as critical. When we design a solar storage battery system for a New Hampshire home, most homeowners prioritize the following:

Priority

Load

Why It Matters

High

Well pump

No power means no water on most NH properties

High

Refrigerator and freezer

Multi-day outages mean real food loss and real cost

High

Heating system controls

Gas furnaces and heat pumps all require electricity to operate

High

Medical equipment

CPAP, oxygen, anything that cannot wait for the grid to come back

Medium

Lights and outlets

Basic habitability during extended outages

Medium

Wi-Fi and phone charging

Small draw, high value when managing an emergency

High

Well pump

No power means no water on most NH properties

Refrigerator and freezer

Multi-day outages mean real food loss and real cost

Heating system controls

Gas furnaces and heat pumps all require electricity to operate

Medical equipment

CPAP, oxygen, anything that cannot wait for the grid to come back

Medium

Lights and outlets

Basic habitability during extended outages

Wi-Fi and phone charging

Small draw, high value when managing an emergency

Whole-home coverage is achievable with larger systems. We size every system around what you actually need covered, not around what looks impressive on a proposal.

What You Need to Know About Solar Battery Storage

Battery size determines what you can run

Not all battery systems are the same size, and not all backup setups cover the whole home. Before you install anything, you need a clear picture of:

  • Which loads you want covered during an outage
  • How long you need coverage before solar recharges the battery
  • Whether you need partial-home or whole-home backup

We model this out for your specific home. There’s no guessing involved.

Solar recharges the battery during an outage

This is what makes solar panel battery storage in NH fundamentally different from a generator. A generator runs until it runs out of fuel. 

A solar-charged battery keeps replenishing throughout the day as long as your panels are producing, which means a well-designed system can provide continuous power through multi-day outages without any fuel management on your end.

The installation matters as much as the equipment

A battery that is integrated incorrectly with your solar system or your electrical panel creates problems that are difficult and expensive to correct. 

Every SRsolarNH installation is completed by our own crew, with a 25-year warranty behind the work and no subcontractors involved at any point in the process.

Don't Wait for the Next Outage

SRsolarNH brings 15+ years of collective experience designing and installing solar battery backup systems across NH. Get a free consultation and find out exactly what your home needs.

Serving New Hampshire and Beyond

SRsolarNH installs solar battery storage systems for New Hampshire homeowners, with 15+ years of collective experience across the state. We cover a wide range of communities across the state and are always expanding our reach. 

Not sure if we serve your area? Give us a call and we will let you know.

  • Nashua
  • Manchester 
  • Dover
  • Rochester
  • Concord
  • Brattleboro
  • Lebanon
  • Hanover
  • Lincoln 
  • Conway
  • Franconia
  • Littleton

And the surrounding areas.

What Our Customers Are Saying

Frequently Asked Questions

In most cases, yes. Solar battery storage systems are designed to work alongside a solar array, using the energy your panels produce to keep the battery charged. If you do not have panels yet, SRsolarNH can design a complete system that includes both.

That depends on how many batteries you install and which loads are connected to the backup circuit. A system designed around critical loads will last significantly longer than one carrying the whole house. 

What makes solar battery backup particularly effective is that your panels continue recharging the battery during daylight hours, which can extend coverage through multi-day outages. We model this out for your specific home during the design process so you know exactly what to expect.

Yes. SRsolarNH installs battery storage for solar systems that were not originally built with backup in mind. We evaluate your existing equipment and electrical panel to determine the best integration approach. This applies whether or not SRsolarNH completed the original installation.

The Best Solar System Is the One Built for Your Property

SRsolarNH designs every system from scratch around the specific land, roof, usage, and goals in front of us. We are EnergySage Installer of the Year 2025 and 2026, and Union Leader Readers’ Choice Award 2024 and 2025. If you are ready to make the switch, reach out!