Energy Storage Systems

Energy Storage Systems

Home energy storage is changing the way New England homeowners think about power. Instead of relying entirely on the grid -- or running a generator every time the lights flicker -- a battery backup system stores energy for use exactly when you need it. Powers Guaranteed installs and services energy storage solutions that work on their own or alongside your existing generator or solar array.

How Home Battery Storage Works

An energy storage system uses high-capacity batteries to capture and hold electricity. During normal operation, the batteries charge from the grid or from rooftop solar panels. When the grid goes down or electricity rates spike, the system automatically switches to stored power -- seamlessly, with no interruption to your home.

Unlike a traditional generator, a battery system produces no exhaust, no noise, and requires no fuel delivery. It simply works, quietly and cleanly, whenever your home needs it.

Why Consider Energy Storage?

• Instant backup power -- Batteries respond in milliseconds, keeping sensitive electronics and medical equipment running without a gap.
• Lower utility bills -- Time-of-use pricing means electricity costs more during peak hours. A battery system lets you draw from stored energy when rates are highest and recharge when rates drop.
• Solar integration -- Pair batteries with solar panels to store the energy your roof produces during the day and use it at night, reducing your dependence on the grid.
• Clean and quiet operation -- No engine, no exhaust, no noise. Battery systems are ideal for neighborhoods with noise restrictions or homeowners who prefer a greener approach.
• Generator compatibility -- Already have a standby generator? A hybrid setup lets the battery handle short outages silently while the generator takes over during extended events, reducing fuel consumption and engine wear.
• No moving parts -- Energy storage systems have no moving parts, which means minimal maintenance and long system life.

Brands We Install

FranklinWH Energy Management

We install FranklinWH whole-home energy management systems, which combine battery storage, solar integration, and intelligent load management in a single platform. The FranklinWH system monitors your home's energy usage in real time and automatically decides whether to draw from the grid, your batteries, or your solar panels based on cost and availability.

For homeowners with an existing generator, FranklinWH coordinates all three power sources so each one works at peak efficiency. The result is a home that uses less grid power, runs more quietly during outages, and gives you complete visibility into where your energy comes from and where it goes.

Briggs & Stratton SimpliPHI

Briggs & Stratton SimpliPHI energy storage systems offer a proven, reliable battery solution built on Lithium Iron Phosphate (LiFePO4 or LFP) technology. These systems are designed for safety, longevity, and straightforward integration with your existing electrical setup.

Hybrid Generator and Battery Setups

Many of our customers already own a standby generator and want to add battery storage for the best of both worlds. Here is how a hybrid system benefits you:

• Short outages are handled entirely by the battery -- no generator startup, no fuel burned, no noise.
• Extended outages trigger the generator automatically, and the battery supplements it during peak demand.
• The generator charges the batteries during low-demand periods, then shuts off while the batteries carry the load -- extending fuel supply and reducing engine hours.
• Solar panels recharge the batteries during daylight, potentially allowing the generator to stay off entirely during longer daytime outages.

What Does an Energy Storage System Cost?

Because energy storage is so scalable, the price depends largely on your home's energy needs. Generally speaking, fully installed systems start at $26,000 and can increase depending on what circuits you choose to power and how long you need them to run during an outage. Your consultant will design a system matched to your goals and budget.

Frequently Asked Questions

Get Started with Energy Storage

Whether you are building a new home, adding solar panels, or looking to complement your existing generator, Powers Guaranteed can design a storage solution that fits your property and your budget. We have been helping New England homeowners take control of their power since 1994 -- energy storage is the next step in that mission. Request a consultation or call 800-853-7202 to learn more.

Learn More

Download our Energy Storage System flyer for a quick overview of how battery backup can work for your home.