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Joined 11 months ago
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Cake day: June 16th, 2025

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  • Well the solar power you’ll have to provide yourself (or apparently they’ll also rent panels to you?). The technology doesn’t seem too far-fetched, but the economics of it don’t make sense for me at least.

    Technology itself should be simple. Use excess solar power throughout the summer to produce hydrogen (not difficult), store it safely (more difficult - they claim to store it in solid form which makes me wonder how that would take place in an automated fashion underground). Then in the winter, turn hydrogen back into electricity and use waste heat for heating water.

    But the fees exist all year round. If I had solar panels, electricity would be nearly free to me in the summer (at peak we get 18 hours of sunlight in the summer… and 18 hours of darkness in the winter). The annual cost of this system would pretty much add up to what my energy costs are already without any solar panels though. If I just got myself solar panels and a battery that can last me ~12 hours in the spring or fall, I’d only REALLY need to be paying for electricity for about 6 months a year.


  • Monthly base fee starts at 300€, which will be reduced by […] which can amount to up to 150€

    Yeah if it was more than the 10 MWh they’ve mentioned on their website, perhaps it would be good enough for my house. But I think I reached over 2000 kWh of electricity consumption a month this winter thanks to my heat pump and possibly more than that in briquettes that I use for my central heating furnace. The 10,000 kWh they talk about is sadly not enough for my soviet-era built house, nor is my roof big enough for a meaningful amount of solar (it’s complicated… big house, small roof, not all of the roof useable for solar). If I’d have to get 2 or 3 units and they end up costing me significantly more than the 300€ a month? No thanks. My highest electricity bill in the winter was about 330€ and yes, I also burned about 500€ worth of wood briquettes that month, but in the summer I pay less than 100€ and this was a freakishly cold winter, so normally it wouldn’t cost as much (and I’m also now older and wiser and will keep a bigger stockpile because the prices do go up in the winter, something I’ve experienced before).



  • It’s going to be a key to unlocking proper grid-scale energy storage.

    For example, in my country, there’s decent solar output from about april to october at most. November to February we just sit in the dark, the sun barely rises at all. With li-ion, the cost to store enough energy in the summer months to use it in the winter would be at least 100x for the batteries compared to the solar panels themselves. Not the least of our issues is that energy usage in winter is significantly bigger than summer, largely due to increasing number of heat pumps and the fact that EVs require way more electricity in the winter for the same distance as well.

    Wind helps out in the winter, but mostly we’re at the mercy of fossil fuels, whereas in the summer we have nothing to do with our plentiful solar energy so the price often goes negative, meaning if anyone accidentally sells their power to the grid, they have to pay for the privilege.

    Personally I don’t significantly care about batteries becoming safer. I do care about them becoming cheaper. I’ve not had a single spicy pillow on anything I’ve owned, only seen them at work when I refurbished laptops.