Generator Sizing: What Wattage Do You Actually Need?

Undersizing a generator is the most common mistake. Here's how to get it right.

Running vs starting watts

Motors draw a surge when they start. Add up the running watts of everything you'll power, then add the single largest starting watt figure on top.

A quick example

• Fridge: 700W running, 2200W starting
• Lights + tools: 1500W running
• Recommended generator: ~4400W

Inverter generators are quieter and produce cleaner power for electronics.