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Joined 13 days ago
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Cake day: April 21st, 2025

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  • I’m just pointing out an issue with residential PV which, when I first heard about it, surprised me. I hope it does not surprise the people making these laws.

    Imagine if, some years from now, seasonal solar oversupply might become in the UK and the people with these by law mandated panels face the choice to either manually switch off their systems or pay to send their solar energy into the grid. It sounds stupid but this seems to be happening in places with high PV density.

    And btw you’re getting me wrong, I am a big fan of residential solar. I’ve got a small system. It’s just, at scale, apparently more complicated than covering every roof with panels…


  • People who install solar on their roofs usually expect to recoup some of the costs by sending energy to the grid. When, increasingly often, they have a choice of either shutting the system off and wasting this energy or sending it to the grid at low or even negative rates, this becomes a problem. The expectation of “my solar system will pay for itself in X years” might become “my solar system will never break even”. At least that’s an issue in some places with high PV density.