• Also about to put a deposit down on 14 solar panels and a 7kWh battery to be installed in the new year.

    In addition to the ASHP woes above, I've talked to (and paid £500 to) Octopus about a solar survey. They reckon they can get 5 panels maximum on SW side, but the NE of the house has more potential... Not feeling it for just 5 panels (£5400 for just panels, +£3k for 5.2kWh battery) so if the NE thing doesn't work out, I won't go forward and hopefully will get my deposit back.

  • I’m sure you will check, but for your NE panels, generation will be very low. Check very carefully before going for those as they’re unlikely to be cost effective for a long time.

    Was going to be about 10 year payback time for us which was the product warranty period, matching what @Howard says above, but our quote was about £12k last year for 6 panels (SSE facing) + 9.6kWh battery. Not worth it. If that spec got down to about £6-7k then I’d probably jump.

  • This is the current Solar Together price list for Herts - about £8.5k for what you want. 40% YoY price drop...

    Seriously considering just loading up on panels on the house roof as well as garage (currently planned) as they're so cheap and I'd rather install all at once.

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