Time-of-Use rate plans vary the price the utility charges for electricity depending on the time of day, day of week, and season. By shifting electricity usage to times when demand on the grid and electricity costs are low, you can lower your bill and reduce the need to run fossil fuel power plants, cutting air and climate pollution. 

Your Harvest Thermal Battery System™ is designed to save you money when on a TOU rate by shifting your home’s electricity demand from peak to off-peak times. The lower the off-peak price, the more you will save. 

Contact your energy company about time-of-use rate plans and choose one which offers a high difference between peak and off-peak times. For example, PG&E’s EV2-A and E-Elec rates have large peak to off-peak differences and are ideal for Harvest. We recommend starting with with PG&E’s E-Elec rate if you have a heating-only system, and EV2A if you have a heat pump A/C, and then using your utility’s online tool to find which rate is best for you after 12 months of Harvest Thermal Battery System operation. 

Leveraging Time-of-Use Rates