this post was submitted on 02 Oct 2024
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This is idiotic. The fact is your electricity transmission system operator has to pay a lot of money to keep the grid stable at 50 or 60Hz or your electronics would fry. With wind and especially with solar power, the variable output is always pushing the frequency one way or the other, and that creates a great need for costly balancing services. Negative pricing is an example of such a balancing service. Sounds good, but for how long do you think your electricity company can keep on paying you to consume power?
Why isn't this as easy as storing some of that excess energy in a home battery and letting the rest down in a wire into the ground? Then if it's smart enough it could only give back energy when needed.
Well, that's what they're doing some places. The batteries assets are not in private homes usually though, they're by themself or run by power-consuming industries. Batteries are expensive though, and they degrade quickly if you use them wrong. In the EU, ENTSO-E defines the market rules, trade systems and messaging systems that energy companies and asset owners play by. Sometimes the revenue-generating asset is a battery, sometimes it's a hot water boiler, wind park, factory, hydro plant etc.