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Why would you need storage for half of your annual electricity usage to be self-sufficient? It seems like you could achieve that with far, far less battery, per
by margalabargala 3y ago
Why would you need storage for half of your annual electricity usage to be self-sufficient? It seems like you could achieve that with far, far less battery, perhaps combined with slightly more solar.
- jvdvegt 3y agoOur panels produced a mere 60kWh in december. We've got 6 months where we use more than we produce. Storing 50% was a quick estimate as for what we'd need. Anybody got better numbers for that?
- jvdvegt 3y agoThese numbers are easy to compute myself. For the 6 months my panels did not produce enough electricity, we used a total of 2.1MWh from the grid. So my 50% guestimate was actually spot on :)
- margalabargala 3y agoWell there you go :) If you have the land for it, you might find it mildly more cost effective to ground-mount solar panels at a steeper angle to optimize for wintertime production, which would allow you to shrink the battery. Installing 10000 kg of batteries in a home isn't something likely to ever be super easy.