Battery storage
We'll install a battery system in your property so you can use solar power - even when it's dark
Your power. Your rules. Let a battery put you back in control.
Imagine never worrying about power outages, tariffs, or wasting all that potential sun power. Home battery storage puts you in charge by storing solar energy when it's sunny, then giving it back to you when it isn't.
Here’s how it quietly works behind the scenes to make life easier:
- Smart Charging – During a sunny day, your solar panels will probably produce more power than you actually need. Your battery will then collect all that precious solar energy and store it for a rainy day
- Effortless Storage – Instead of sending extra power to the grid or letting it disappear, be selfish and keep it for yourself. You'll make more from saving the power than you'd get paid for selling the power anyway (the 'buyback'), so it makes sense.
- Instant Power when it matters – Whether it’s the evening peak, a surprise outage, or just cutting costs, your battery kicks in—no hassle, no disruption.
It’s not just a battery; it’s freedom. Others are storing their solar energy for a rainy day. Why aren't you?
Do you recall hearing that energy can't be created or destroyed, it can only change form?
On a very sunny day, your solar panels are probably generating far more electricity than you actually need. That extra energy can't simply disappear - so the system is designed to switch off if there is limited demand for electricity in the grid in your local area. The same goes for everyone else with solar panels in Guernsey too.
If you use a water butt to collect free rain water, once it's full it's full. The same goes for solar power. When demand for electricity is low, we physically can’t push any more power into the system.
When all that extra power has nowhere to go—like a battery —the voltage in the system starts to rise. When the voltage gets too high, the inverter will shut off the solar system to prevent damage. Sometimes these systems are unable to switch themselves back on again automatically when clouds cover the sun and the voltage drops, which is why people can find their systems switching off on very sunny days.
But why not just send all that extra power to the grid instead?
When it's sunny and everybody is out and about, the demand for electricity is low. And when there are lots of other houses with solar panels also generating too much power, there's nowhere for all that spare energy to go because nobody needs it.
Unfortunately that means Guernsey Electricity will be unable to buy it from you as there's no demand in that local area.
What can you do?
We recommend that you design your solar and/or battery storge systems to only meet your personal demand. That way your solar panels will generate enough electricity for you, and save some of the excess into your battery. Your solar power system is then far less likely to switch off.
No solar panels? No problem. You can still help run your home on low-carbon energy.
Charge a battery during at the cheapest, greenest time – between 11 PM and 5 AM.
This is when electricity demand is at its lowest, meaning your battery fills up with 100% imported renewable energy. That means no more fossil fuel top-ups, just pure, guilt-free power.
See it. Track it. Control it.
Your smart battery portal lets you check your energy use anytime, anywhere. With real-time insights on charging, discharging, solar generation, and usage across multiple properties, you’ll know exactly where your power goes—no guesswork, just smart savings.
Most people never think about electricity. As long as the lights turn on and the kettle boils, who cares what’s happening behind the scenes?
The Problem? Peak demand means more fossil fuels. That means things get expensive.
When everyone cranks up the heat or starts cooking at the same time, Guernsey’s power station has to work overtime, burning more and more fuel to keep up. And with more and more electricals being installed every year, the costs can only go up if the grid isn't balanced.
One Solution? Batteries to balance the load
By storing energy then using it at peak times such as between 5pm and 7pm, battery owners help take the pressure off the grid without even trying.
Less Strain. Fewer Emissions. Lower Costs
Whether or not you care about pressure on the electricity grid, using a battery means you’re helping Guernsey rely less on fossil fuels and help keep energy stable for everyone.
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