⚡ Free Tool
Power Station Sizing Calculator
Find exactly what you need in 60 seconds
What are you powering?
Pick a scenario and we'll pre-fill common devices. You can customize everything in the next step.
Customize your devices
Add, remove, or adjust devices and run times to match your real needs.
Your power requirements
Show math breakdown
Why 85% efficiency? All inverters lose energy converting DC battery power to AC outlet power. We add ~15% to your raw total so you don't end up short. Devices with compressors (fridges) also have duty cycles — they don't run continuously.