How much does a generator cost? The answer depends on the ... and 5,000 square feet would need a 20,000-watt (20 kW) generator. A good standby generator should last at least 20 years if well ...

Standby generators for your home provide between 5,000 and 20,000 ... you likely need a generator capable of outputting between 10kW and 20kW, for a cost of between $3,000 and $10,000. If you have a ...