We have solar panels with a net-metering + time of use plan. The way our utility works is that they charge a flat fee per *net* kWh (this makes sense) and then give a per kWh credit for super off peak (fee+credit=cheaper) and an extra charge per each peak kWh.
Interestingly, these past few bills we've received a super off peak credit for more kWh than we've actually used from the grid. I guess their systems aren't intelligent enough to care for that. So we are, in a very small way, (so far max $3/month) profiting off of this.
Example: At the end of the month the power they sent me, minus the power I sent them is 200 kWh. But my super off peak usage is 400 kWh. I get to pocket the super off peak credit for all 400, even though I only netted 200. Now, if only I could game the system like a tech/finance bro...







