Comment by amenghra

Orthogonal but related: where I live, homeowners might get charged negative prices at times for solar re-injected in the network. This doesn't make a ton of sense for me since you could just unplug the panels instead of being charged for the production! However, the electric company charges you retroactively (on a 15-min bucket) so you would need an accurate model to "beat them at their game". Negative electric prices in a country with a huge amount of solar/wind/hydro is surprising, since all of these production methods can stopped on demand (and even reversed in the case of some hydro setups).