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Joined 2 years ago
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Cake day: July 2nd, 2023

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  • Another solution would be adding some intelligence to water heaters. Have a temperature control valve on the output where you set the temperature, and program the water heater get to 160-180°F when electricity is cheap. This would be a thermal battery that would easily level out demand for electricity for heating water.

    This has been done for close to a century in wind or run of river hydro heavy countries (as well as some coal ones).

    The water heater has a buffer tank and is attached to a meter that only runs when a signal is sent across the power line. This stores about 20kWh for a 300L tank.

    Modern insulation would allow going up to a few m^3 for a couple weeks’ worth.








  • 1kg of lithium produces about 10kWh of storage for 15-20 years. 3-12 hours of storage is plenty for a >95% VRE grid.

    1kg of uranium produces about 750W for 6 years.

    There are about 20 million tonnes of conventional lithium economically accessible reserves (and it has only been of economic interest for a short time).

    There are about 10 million tonnes of reasonably assured accessible uranium (not reserves, stuff assumed to exist). It has had many boom/bust cycles of prospecting.

    Lithium batteries are not even being proposed as the main grid storage method.








  • Wild concept: It’s possible to offer a fair price to someone who can. You don’t need to pay $20k for one day’s labour (although you probably do need to pay about $1k for an hour for a licensed electrician to inspect and do the final hookup if you want to AC feed for winter and cloudy days). You do not need to pay $1/W or wait years for grid tie if you have a battery and size for self consumption.

    Given how thoroughly ripped off you are and how dismissive you are of the price people in civilised countries consider normal, I’ll assume you’re in the US. Signature solar sell panels for 31c/W hybrid off-grid inverters for $2k and batteries for $280/kWh. You can probably do better if you look around and don’t just listen to the door to door MLM scammers.