3 ms·
> So if you have a 100kWh system with ~60% throughput efficiency, you'd need 160kWh of input at your standard energy rates and then the energy coming out would
by gonzo 12y ago
> So if you have a 100kWh system with ~60% throughput efficiency, you'd need 160kWh of input at your standard energy rates and then the energy coming out would be 'free'
I think the idea is that this is storage for renewables. As such, you wouldn't need more "input at your standard energy rates" than what it might take to charge the system for overnight use.
- mikeyouse 12y agoRight, I guess I was getting at the 'cost' of energy would be he opportunity cost of not selling it back to the grid which is typically the retail price in areas with net metering. Although in off-the-grid situations, you're right that there wouldn't be any incremental cost to charging the storage.