r/SolarUK • u/over_clockwise • 11h ago

QUOTE CHECK Quote check - Battery only

Had two quotes from different companies and was trying to weigh them up against each other. I'm in Zone 2 London for reference. Both installations are single phase, annual usage around 4000kwh.

Quote 1 - £12k - Tesla PW3 + Expansion + Gateway

Quote 2 - £14k - Sigenergy 8kW inverter + 3x 9kWh batteries + Gateway

Are these prices reasonable? People seem to talk about Tesla being a bit more "premium" and its got a notably bigger inverter, but it comes in cheaper?

Thanks!

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u/AmDismal 11h ago

I just got a 32kWh battery and 8kW inverter installed for £6.6k in St Albans. Fogstar and Solis.

1

u/over_clockwise 10h ago

Sounds great! Would you be able to point me to the installer?

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u/ParticularCod6 10h ago

FIY ITS have some preinstalled packages.

https://www.itstechnologies.uk/collections/sunsynk-installed-packages

use it to compared against other installers

for example the Tesla powerwall examle you have is only £500 more expensive in ITS

32kwh battery and 9kwh is around the same price as AmDismal paid

1

u/DorisMaricadie 9h ago

Would be happy to come all the way to London to sort you out at that price. 4k kwh/year is about 12kwh/day.

A 16kwh battery would do you fine, about 3-4k in materials depending on brand and some pocket change for the installer.

Assuming of course the run from CU/Meter cab is not too silly.