PowerUsage

Tools for understanding electricity costs — from a single device to whole-home solar, EV charging, and battery backup.

Start here

Pick a goal. Each one has a guide on how to choose and the tool to do it.

Size a home battery for outages — how much capacity and power you actually need, and which chemistry.

Read your bill, import your usage data, and see whether time-of-use pricing would cost you more or less.

Pick a portable power station for camping, CPAP, or short outages — capacity, output, ports, and recharge.

Design a solar array with or without a battery — size the panels, pick an inverter, and check the payback.

Calculate the cost to run your devices.

Flat rate versus time-of-use costs in your area.

Cost savings for an EV versus a gas car.

Savings per year with solar.

Compare batteries for home backup, off grid, or camping.