It's still not earning you money to spend electricity because you still have to pay the transfer fee which is around 6 cents / kWh but it's pretty damn cheap nevertheless, mostly because of the excess in wind energy.
Last winter because of a mistake it dropped down to negative 50 cents / kWh for few hours, averaging negative 20 cents for the entire day. People were literally earning money by spending electricity. Some were running electric heaters outside in the middle of the winter.
Yes, that was close to where I live in Western Germany. Last outburst of old thinking (I hope). Meanwhile, the power company said in the news, it doesn’t need that entire area and forest anymore, because renewables have gone too competitive. Coal is too costly now.
If you like to see a moon-alike area in a densly populated area in Western Germany - the open field coal area Hambaxh: https://maps.app.goo.gl/H47EKatEDyKut3XZ6?g_st=com.google.maps.preview.copy
As big as city of Cologne. I‘m happy that this is going to stop by 2030. Or even faster