this post was submitted on 09 Apr 2024
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Well, you have to handle excess power produced, you can't just dump it on the ground.
If the grid produces too much power in excess of what's being consumed, parts of it need to shutdown to prevent damage.
That's why the price can go negative. They'll actively pay you to use the power so they don't have to hit emergency shutdowns.
As we build more solar plants, the problem gets exacerbated since all the solar plants produce power at the same time until it's in excess of what anyone needs. Unlimited free power isn't very helpful if when it's producing it's producing so much that it has to be cut from the grid, and when demand rises it's not producing and they have to spin up gas turbines.
That's before the money part of it, where people don't want to spend a million dollars to make a plant that they need to pay people to use power from.
https://www.technologyreview.com/2021/07/14/1028461/solar-value-deflation-california-climate-change/
They go on to talk about how getting consumption to be shifted to those high production times can help, as can building power storage systems or just ways to better share power with places further away.
Government should invest in more energy storage so the excess can be used later, like at night
That and incentivise smart devices like water heaters that run when power is cheap, which is effectively a rudimentary battery
If all grids did was put high resolution pricing data on the wire we could make those decisions for ourselves.
It still takes upfront investment. that's easy if you're wealthy but a lot harder if you're pay check to pay check + there's no reason landlords would do it. part of it is the high resolution pricing data, but we need more than just that
Everything is a cost.
It could quite easily be cheaper to pay people to use energy than it is to store it. Once that equation changes then hopefully they start buying storage.
Problem is that storing electric energy at a large scale is really difficult, with lots of engineering and research effort going into finding solutions. Investment into storage is good, but it's still an area of active research how to even do it.