There are a few things that you will need to work out at home:
Make sure that you have a good idea of how much power your home or business needs. It will help to narrow down your selection of generators.
Choose a generator of the right size for your needs. You do not want to purchase a generator that is too large or too small, as this will not be useful.
Ensure that the generator is adequately insured and has a warranty covering any defects.
Shop around and compare prices to get the best deal possible.