Alternate rates of 25c/-15c daytime, 70c/-30c night:
Customer would maximize daytime charge, let's say 20kWh, serve their day load from the grid, then discharge to serve peak load (half exported).
Net savings is $7, still decent, but the duck curve gets flattened by twice as much each direction.
Customer would maximize daytime charge, let's say 20kWh, serve their day load from the grid, then discharge to serve peak load (half exported).
Net savings is $7, still decent, but the duck curve gets flattened by twice as much each direction.
Comments
That boosts capacity 1.5x
Data vis is key...a daily graph showing charging and discharging price differentials would go a long way to showing the value.
As close to a win-win as you can get with rate design. At least, a lot better than the zero-sum status quo pushed by the IOUs
You can make a good return charging from daytime imports and discharging to reduce evening imports if the TOU differential is high enough (and the utility lets you)