Starlink backup calculator

Estimate power station runtime for Starlink-style internet.

Enter your internet setup watts, battery size, usable capacity, and planned hours. The calculator estimates runtime and the solar panel size that may help refill the battery.

Estimated runtime 9.4 hours

A 1000Wh class battery can cover a workday-style internet window.

Inputs

Internet load and battery

Internet setup watts Use a watt meter or current power specs for your exact dish/router setup. Extra router or Wi-Fi watts Add a separate router, mesh node, or small network switch if used. Power station capacity Use the listed watt-hours, such as 500Wh, 1000Wh, or 2000Wh. Usable battery percent Accounts for inverter losses, reserve, and real-world headroom. Hours needed Use the internet window you actually need, not a full day by default. Good sun hours Used to estimate panel watts for daily recharge.

Use your real watt draw if possible

Satellite internet power use changes by model, router setup, temperature, firmware behavior, and whether extra networking gear is running. Use the presets only as starting points.

Next checks

Match internet runtime with recharge time

Recharge

Solar recharge time calculator

Check whether your panel can refill the battery before the next internet session.

Open calculator

Solar panels

Will a 100W panel recharge my power station?

See why panel watts, input limits, and sun hours decide whether the setup works.

Read guide

Outage

Outage backup load planner

Add internet to phones, lights, fridge, and other outage loads.

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