this post was submitted on 27 Mar 2026
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'Suddenly energy independence feels practicalโ€™: Europeans are building mini solar farms at home (www.euronews.com)
submitted 3 weeks ago by Blaze@piefed.zip to c/buyeuropean@feddit.uk
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[โ€“] Korhaka@sopuli.xyz 6 points 3 weeks ago (9 children)

Who sells good parts for this? Looking at a lot of batteries and it's like ยฃ1 of energy storage for ยฃ3k. Would need to fully charge and discharge it well over 3000 times to pay for its self and that doesn't count the solar panels either.

I have heard of people talk of much shorter payback periods so I assume better must exist and I am just looking at the wrong things? Or go for a smaller battery and just make use of the solar power during the day and the battery only holds a fairly small capacity but balances loads a bit.

[โ€“] fonix232@fedia.io 7 points 3 weeks ago (7 children)

You're forgetting that those batteries are super useful in case of power outages and to time your energy release to the grid when it's most valuable for you. It's also beneficial to switch to an electric plan that has on/off peak rates, so you can charge the battery during off peak, and utilise it during peak periods. kWh pricing can be as much as 2-3x difference (depending on how you look at it, e.g. Octopus offers 0.11ppkWh off-peak and 0.35ppkWh peak rates, but they have a solar package too that offers optimised export rates).

I'd also say, go for a smaller, modular battery, and upgrade bit by bit as you need, that way the investment returns are visible sooner.

[โ€“] wewbull@feddit.uk 3 points 3 weeks ago (1 children)

You're forgetting that those batteries are super useful in case of power outages

  1. The last power outage I had was over 10 years ago.
  2. Batteries only work in that case if the inverter isn't "grid-following". Most inverters are, and so when the grid goes down, so do your batteries.
[โ€“] fonix232@fedia.io 2 points 3 weeks ago

  1. Lucky you. Does nothing to prevent an accident tomorrow down the road, where a worker may cut the mains cable by accident, which will take a few days to restore.

  2. hybrid inverters and transfer switches (even automatic ones) do exist...

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