Bank your sunshine, drink it later.
The Sunamp Thermino turns your solar surplus into stored hot water. Stop exporting at pennies, stop importing at peak rates, and start using more of the electricity your roof actually generates.
- ~5p
- Typical solar export rate
- 25p+
- Typical import rate
- 60-80%
- Of solar surplus you can use
The problem
Most solar generation is sold back to the grid, for pennies.
In a typical UK home, the solar panels peak around midday, exactly when nobody is home to use the power. The result: 50-70% of what you generate is exported to the grid under the Smart Export Guarantee (SEG), often at around 5p per kWh. Hours later, you import the same kilowatt-hours back at 25-30p to run your heating and hot water. That gap is your bill. Sunamp closes it.
How they pair
Three steps, all handled automatically.
Step 01
Solar generates
Your panels make electricity through the daylight hours, peaking in the middle of the day, when no one's home to use it.
Step 02
Surplus diverts to the Thermino
Any kilowatt-hours your home isn't actively using are pushed into the Sunamp, charging the phase-change cells.
Step 03
Heat is locked in
The energy is held inside the battery for hours or days, ready to deliver instant hot water when you want it.
What changes when you pair them
Four wins, day one.
Stop selling cheap, buying back dear
Why export your surplus at ~5p only to buy gas or grid electricity back at five times the rate? Sunamp turns that surplus into something you actually use.
More of your own energy used
Most homes export 50-70% of what their panels generate. Adding a Sunamp typically pushes self-consumption above 80%.
Works year-round
Even on dull winter days, partial sun + cheap overnight off-peak rates keeps the Thermino full. No tank-shaped compromise to dodge.
Genuinely zero-carbon hot water
Solar in, hot water out, no fossil fuels anywhere in the chain. The cleanest hot water you can run in a UK home.
Year-round suitability
Works even in a North West winter.
We get plenty of dull days up here. The Sunamp doesn't care; it'll top up from whatever solar surplus there is, then fall back to overnight off-peak rates the rest of the time. You always have hot water; you always have it cheap.
The Sunamp + Solar combo fits if…
- Homes with existing solar PV (any size from 2 kWp up).
- Planning a solar install? Pair them from day one and skip the cylinder entirely.
- Pairing solar with EV charging, where Sunamp grabs surplus when the car isn't plugged in.
- Off-peak tariff users, who fill from solar by day and top up from cheap rates overnight.
Already have solar? Let's size your Thermino.
A free survey takes 30 minutes, and we'll model your generation vs demand on the spot.