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Cake day: August 2nd, 2023

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  • oyo@lemm.eetoScience Memes@mander.xyzAnon questions our energy sector
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    1 day ago

    Ok let’s compare real data then. Vogtle 3&4 are the latest nuclear plants to be completed in the US. They cost over 30 billion dollars for a capacity of 2.106GW. That’s >14.2 dollars/watt. Let’s be generous and assume nuclear has a 100% capacity factor (it doesn’t).

    I can’t find real numbers for Moss Landing specifically, but NREL has data on BESS costs up to 10 hr storage at $4.2/watt. Let’s ignore that no grid in the country actually needs 10hr storage yet.

    Utility scale solar has well known costs of ~1 dollar/watt. Let’s assume a capacity factor of 25%, so for equivalent total energy generation we are looking at $4.

    $4 for solar, $4.2 for BESS, and since you’ll complain about not having 24hr baseline let’s add another equivalent 10hr storage system at $4.2. that’s a total of $12.4, compared to Vogtle’s $14.2.

    Add in that the solar plus BESS would be built in 1-2 years, while Vogtle took well over a decade.

    Also consider that BESS systems have additional value in providing peaking ability and frequency regulation, among other benefits.

    Also consider that PV and batteries have always gotten cheaper over time, while nuclear has always gotten more expensive.












  • Solar panels don’t use any “rare metals.” Solar carport projects simply cost 3-4x more on a per watt basis than large “green field” ground mount projects. This is due to the increased structural, permitting, and install costs. Carports also cannot track the sun, which reduces their output by about 20%.