Article
EV and heat
Solar and heat pumps: sizing for winter
Why we size panels and batteries differently when a heat pump is on the way.
7 min read
A heat pump does most of its work in winter, when panels make the least. That doesn’t make solar pointless, but it changes how we size the system.
Size for the whole year
We model your heat pump’s use month by month alongside the roof’s output. Usually that means a slightly larger array and a battery that can be filled overnight on a cheap tariff.
Hot water
In summer, spare solar can heat your hot water cylinder through the heat pump or a diverter, which saves gas or grid power on the days you would otherwise export.
Planning both together
If you are planning a heat pump within a couple of years, tell us at the survey. We will fit an inverter with room to grow so you don’t pay twice.
Want the numbers for your own roof?
A free 45-minute survey and a fixed written quote.
Keep reading
Savings
6 min read
How much can solar panels save a UK home?
A plain-English look at what panels really make in Britain, and what that means for your bills.
Batteries
5 min read
Is a home battery worth it in 2026?
When a battery pays for itself, and when panels alone are the better buy.
EV and heat
4 min read
Charging your electric car from your own roof
How to fill an EV with sunshine, and what to do in winter.