When your solar panels produce more electricity than you use, you can store the excess energy in the Tesla Powerwall instead of losing it and sending it back into the grid. You can then use your stored energy if your panels aren’t producing enough electricity to meet your home’s needs.  During surge periods or at night, you can rely on the energy stored in your Powerwall instead of having to buy it from your utility company, therefore save money on your utility bills.

The Tesla Powerwall is modular, meaning you can comebine multiple Powerwalls to meet higher energy demands. You can add up to 10 Powerwall batteries together to maximize your energy storage system.

Power is measured in kilowatts (kW). Power determines the maximum amount of electricity that can be output at a single time. Usable capacity is measured in kilowatt-hours (kWh). Usable capacity is a measure of the maximum amount of electricity stored in your battery on a full charge. The Tesla Powerwall boasts a continuous power rating of 5.0 kW to go along with 13.5 kWh of usable capacity.

How does this translate during a power outage? If you had two Powerwalls, you would have a power output of 10kW for 2.6 hours, assuming you had no other inputs. If you are also generating solar power from a PV system, that amount of time would increase.

Using the Power Flow feature within the Tesla App, you will have real-time visibility into your home energy system. You will have real-time visibility into your home energy system. You can easily customize your Tesla Powerall operations by modifying your mode of operations.

Backup-Only Mode: saves all battery capacity for a utility outage

Self-Powered Mode: uses exess energy at night during surge periods. For a balance, you can set your Tesla Powerwall to use excess power during daily surge periods but fully recharge before sunset each day.