I need to look into this again. I had it installed at the beginning of the winter and found it wonky. Heating during peak hours and not doing a thing when we pay .02$/kWh
I definitely take advantage. I have solar panels that generate a moderate amount of energy, heat pump, and electric (heat pump) furnace and hot water tank plus two electric cars. Home Assistant has been such a dream to maximize the low energy and self-generated energy.
I have debated adding some batteries, but the amount of energy we use, especially at -30 c, it's cost prohibitive.
Iβve been wondering about thermal storage for heat pumps but we donβt have time of use metering yet. I see a few options online but contractors arenβt familiar and itβs not even clear whether they are really available
My parents house when I was a kid had resistive heat, but they added thermal storage when our utility started doing time of use and it made a huge difference in the bills. However I donβt know the overall payback period
As a point of view, you don't need (and probably shouldn't buy) a battery that satisfies your peak usage. That would be a waste and would be over buying. Instead, a smaller battery that meets your energy needs on 80% of days is probably a better investment. However, only charging your cars at night probably saves a good part of your energy costs. If you're interested, here is a YouTube channel that talks about energy usage with solar panels, heat pump, EV, and batteries.
Woah that is insanely cheap, that on peak rate though.... I could do Hilo here in Quebec but we work remote so I need the heat during the day I think we'd come out loosing.