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AIBU?

Share your dilemmas and get honest opinions from other Mumsnetters.

Solar panels - how important is the battery?

101 replies

thebellagio · 13/07/2022 08:01

Not an AIBU but posting for traffic

ive been looking into solar panels for my house as I’m terrified of the rising energy prices. Last week I was quoted £11.5k for 24 panels plus the inverter, battery and bird cage around the panels. This seems high and he confirmed that it would take 10+ years to break even.

im currently undecided what to do - that’s such a frickin huge outlay and would basically take all our savings. But on the other hand, I feel like it would reduce our bill and potentially add value to the house which we will be staying in for at least 10-15 years.

I guess what I want to know, is if you have solar panels how essential is it to have the battery as well? I completely get it means in the evening you’re working from the solar power you’ve generated rather than buying from the grid but broken down, the panels are about £6k and the battery is £5k so I’m trying to work out if I could save here…

we use about 6kwh electricity a day according to my smart meter. I’ve been quoted for a 4.2kwh system but a 9.5kwh battery so I’m reluctant to spend that amount of money on a battery if we’re only going to use a minimal amount of the solar power generated. At the moment we don’t have electric cars, so our solar usage is unlikely to change for at least 3-4 years

Has anyone got any advice?

OP posts:
User952539 · 22/07/2022 16:46

Ilovecheesetoasties · 22/07/2022 16:43

If I used the same amount of electricity as you, I wouldn’t bother. If you are going to, I would definitely get more quotes. We’ve been quoted for a 10KWh system with 9.5KWh battery and it’s not that far off what you’ve been quoted.

make sure they do the DNO approval before you set your hopes on the 10kw system. Because of the massive increase in homes with panels they are clamping down even harder on oversized systems. Western power for example won’t allow more than a 5kw system now.

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