Buying a generator too big
The mistake that wastes fuel and kills engines.
The mistake that wastes fuel and kills engines.
A generator is the bluntest tool in the box and sometimes exactly the right one.
The most common mistake: buying too big. An oversized generator running a small load burns fuel inefficiently, and on diesel units causes wet-stacking — unburned fuel fouling the exhaust and shortening engine life. A generator wants to run under meaningful load, not idle for hours.
The efficient pattern: generator → charger → battery → loads. You get maximum fuel efficiency, minimum runtime, minimum noise, and minimum annoyed neighbors.
Inverter generators vs conventional: inverter models produce clean power safe for electronics, run far quieter, and throttle to match load. Worth it for anything near a living space.
Sizing: match it to your charging capability, not your peak household load. If your charger accepts 1,500W, a 2,000W generator run near its efficient range beats a 5,000W unit loafing.
Fuel realities: gasoline goes stale in months without stabilizer. Propane stores indefinitely and burns clean. Diesel stores well but dislikes light loads and cold starts.
The Power Sizer turns your real appliance loads into a full spec — battery bank, solar array, controller, inverter and roof space — then matches it to gear that actually fits the number.
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