This generator calculator is designed to provide you with a solid starting point for calculating your backup power requirements. It gives you the starting and operating watts you'll need to run your appliances and electronics. We recommend purchasing a generator with a power rating large enough to run all the necessary elements at 50 percent of the total generator capacity. To find out what size generator is needed to power a home according to your needs, you need to estimate your energy needs.
However, to know what size generator is needed to power a home, you need to check the exact power of your appliances to be 100% sure. Now that you understand how power works, you can figure out how to choose the best generator size for your needs. You need to make sure that the generator you buy is powerful enough to run your essential appliances AND be able to start them. Always place the generator at least 20 feet away from the house, with the exhaust pointing away from the house.
Although there are solar generators and battery generators, most are gas generators, which use propane, natural gas and diesel fuels. Generators are a fantastic way to ensure power during power outages and help provide power to places where electric service is not an option. A mid-size inverter generator is a great option for those looking for a backup power solution in a home that rarely suffers power outages. However, items such as light bulbs and coffee makers don't need an extra boost of energy when turned on.
When it comes to choosing the right sized generator, determine the use and power your lifestyle or project will need. If you need to power a refrigerator, microwave, sump pump and lights, then a 5000 to 7000 watt generator should suffice. If you experience frequent and prolonged power outages, consider a large inverter or a home standby generator, also known as a whole-house generator. Keep in mind that the name of this generator is a bit misleading, as most models weigh almost 300 pounds.
Keep in mind that backup generators for the home cannot be installed in low-lying areas and cannot be moved if there is a threat of flooding. If you're installing a whole-house generator, you won't need to do any of these calculations yourself; the generator installer will take care of everything for you, but knowing these steps can help you make a more informed decision.