In the UK at least, the government offers an incentive to build wind farms by providing a price guarantee: https://www.bbc.co.uk/news/business-67430888 https://

In the UK at least, the government offers an incentive to build wind farms by providing a price guarantee: https://www.bbc.co.uk/news/business-67430888 https://www.bbc.co.uk/news/business-67430888 So they don't have to shut down to 0 kW, since they are guaranteed to be paid significantly for generating even when there is no demand. Or they have to be paid more to shut down, which corresponds to a negative price at the other end. This generally requires negative pricing for other suppliers and consumers to balance it out.