On Sunday, 15 November 2020 at 10:08:49 UTC, Tim+ wrote:

Things get interesting when they occasionally go negative and you get paid
for using power during the night.

Interesting! Does it happen often? What's the rationale? I can't see it being in their interest to encourage negative-rate consumption, but then I'm not familiar with how the whole system works.

I suppose 'smart' appliances will really help in this regard, but in the meantime it could make for a good project - Raspberry Pi scraping the next day's figures and then controlling devices via smart relays to turn on/off to suit. Wouldn't work for many electronic items of course, but maybe something like an immersion heater that tops up the hot water tank overnight if the rates go negative/cheap.