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European electricity prices tumble into negative territory amid glut of green energy
(markets.businessinsider.com)
Everything about energy production and storage.
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Negative prices mean the power companies start issuing orders to ramp down production and/or increase consumption. Residential users are generally not involved in all this because there's not much they can do to help. It's mostly between the power companies and large industrial plants that use more power in an afternoon than your home does in a year.