It is highly recommended to learn about wattage requirements and power capabilities when purchasing a portable generator. For example, a small portable generator will usually provide between 3,000 and 4,000 watts of power. Such things will mostly handle basic items. You will be able to power a refrigerator, microwave, a few lights, the TV and a sump pump. These are also the most cost efficient models. Sure, you can go way higher, depending on your needs. Check some reviews as well. Go to http://www.houseofgenerators.org/ and research one of the best rated and most powerful generators in this field before spending any money.