Energy Storage
Home battery storage for solar homes
Keep the power on during outages and use more of the solar you make after dark. Here is how home energy storage works — and how to tell if it is worth it for your home in NJ, PA, or DE.
Solar panels make power when the sun is up. A home battery lets you store that power and use it when you actually need it — after sundown, during peak-rate hours, or when the grid goes down. For homeowners across New Jersey, Pennsylvania, and Delaware, energy storage turns a solar array from a daytime bill-saver into a round-the-clock resource.
What energy storage actually does
A battery captures the excess electricity your panels produce during the day instead of sending all of it back to the grid. That stored energy is then available in the evening, overnight, or during an outage — so more of the power your system makes is power you personally use.
- Backup power for essential circuits during outages
- Use your own stored solar after the sun goes down
- Shift usage away from expensive peak-rate windows where applicable
- Reduce how much you lean on the grid year-round
Why it matters in the Mid-Atlantic
Our region sees its share of severe weather — summer thunderstorms, nor’easters, and winter ice that can knock out power for hours or days. A battery keeps your lights, refrigerator, internet, and medical devices running through those outages, automatically and silently, without a noisy fuel generator.
Popular battery options
Zenergy Solar installs leading home batteries such as FranklinWH and Tesla Powerwall, sized to the circuits and runtime that matter most to you. Whether you want whole-home backup or just the essentials, we design the system around how your household actually uses energy.
Do you need a battery to go solar?
No — many homeowners start with panels alone and add storage later, and most systems are designed to be battery-ready. But if outage protection or maximizing your self-powered hours is a priority, adding storage up front is often the better value.
Frequently asked questions
How long will a home battery power my house during an outage?
It depends on the battery’s capacity and which circuits you back up. Backing up essentials (fridge, lights, Wi-Fi, a few outlets) stretches runtime much further than whole-home backup. We size the system to your target runtime.
Can I add a battery to an existing solar system?
In most cases, yes. Many systems are battery-ready, and retrofits are common. We will assess your existing equipment and electrical panel to confirm what is needed.
Is a battery better than a generator?
A battery runs automatically, silently, and with no fuel — and it recharges from your solar. Generators can run longer on continuous fuel but require maintenance, fuel storage, and produce noise and emissions. Many homeowners prefer a battery for everyday outages.
Add backup power to your solar system
Find out which battery fits your home and budget with a free, no-pressure quote.