Power and off-grid tools

Size panels and a power station from the loads you run, then check how long they last.

Solar Power Calculator

Size panels and a power station from the loads you actually run. Location and sun hours change the result.

Power Station Runtime Calculator

Pick a station you already own, add devices, and see hours of runtime. Fridges and pumps also need nameplate start-up watts. Watt-hours on the box are not hours of fridge.

Appliance Runtime Pages

Signed-station hours for one appliance at a time: fridge, CPAP, freezer, well pump, and similar loads. The table is not a start-up clearance. The calculator that adds a whole house load is Power Station Runtime.

Power System Builder

Plan an off-grid or overland power stack and get an action list for the gaps.

Solar Compatibility Checker

See whether a panel and a station actually work together: voltage, connector, and charge time.

Continuity Twin

Run this household against grid-down, heat, and water-out packs. It pulls numbers you already entered in the other tools.

Related runtime tools

All tools