Free hot water from surplus solar
Simple but clever — the Solar iBoost diverts your excess solar electricity to heat your water via your existing immersion heater element.
- Uses your existing tank
- Cuts water heating costs
- Less use of your boiler
- Programmable timer
Surplus you never knew you had
Many domestic solar PV systems generate more energy during the day than is used. That surplus energy is usually sent to the National Grid automatically, so you may not even be aware it's going on.
The Solar iBoost+ interrupts this process, enabling you to use more of your free solar energy while you have it — and reducing the amount you need to buy.
What gets fitted
A controller unit near your hot water tank, plus a sender and clamp at your consumer unit that monitor what's flowing to and from the grid.
When the clamp sees power about to be exported, the controller diverts it to the immersion element instead — modulating so it uses only what's genuinely spare. Because heating water is part of the 75–80% of a UK household's energy that goes on heat, it's one of the cheapest ways to make a real dent in a bill.
Why it's worth adding
Part of the bigger picture
Free design and survey
Tell us about your property and we'll come back with a system design and an honest set of numbers.