this post was submitted on 31 Mar 2026
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[–] meldrik@lemmy.wtf 2 points 4 hours ago (1 children)

10 MWh is a lot for just 3-4 months. Do you have a Jacuzzi and heated pool? 😅

For the months you can't produce enough electricity, you buy the electricity during the cheap hours and then use it during peak hours, when it is most expensive.

[–] boonhet@sopuli.xyz 3 points 3 hours ago (1 children)

Heat pump and a cold climate. Now I wish I had a jacuzzi! Curse you! A heated pool or jacuzzi or something outdoors would be peak luxury for me tbh.

There are no cheap hours in the winter, there are kinda expensive hours and super expensive hours. Worst I've seen is 5 euros per kilowatt hour, which is the price cap. Luckily that only happens a couple of times a winter, if that.

I did just find out that some providers allow you to keep a fixed buy price even when you also sell back to the grid (which can't be fixed price). So that could change the math quite a bit.

There's also the option of simply donating the excess to the grid (not having a sell contract) lol

[–] meldrik@lemmy.wtf 1 points 2 hours ago (1 children)

Where do you live? I also have a heat pump for hot water and floor heating. Compared to winter, it barely runs in the summer months, but sounds like you live in a colder place than Danmark?

There’s still money to be made (saved), by buying during the cheapest hours and using it during the expensive hours.

I can save about 1-2 EUR every day by buying during cheap hours and using it during expensive hours. Days I can just use the sun, I of course save even more, because I barely have to buy any electricity, except for a few hours at night.

[–] ayyy@sh.itjust.works 1 points 25 minutes ago

Saving 1-2 EUR per day with a 6000+ EUR battery pack sounds…not worth it.