Generators are designed to produce electric energy. There are mainly two types of generators: backup and portable. They are used mainly when the electricity is turned off. The backup generator provides backup power in houses and offices, and the outside of the house or office building is installed stationary. They are connected to electric circuits or home wiring. Portable generators are usually used in places where there is no power supply, for example, not construction sites. These generators are powerful enough for lighting and launching devices, such as TVs, refrigerators and furnaces.

Generators are available of various sizes and capacities. A 5 kW generator is well in demand — this is an economical and safe source. Buying a suitable generator depends on a number of factors, such as power, capacity, voltage. Type of fuel, fuel efficiency, noise level, compactness and price.

At home, generators with this type of fuel as gasoline, diesel fuel, natural gas or propane are used. Each of them has its own disadvantages and advantages. Gasoline is inexpensive and easy. Gasoline generators give greater power per unit of weight, but requires frequent maintenance.

It is easy to purchase diesel, but it is relatively more expensive. Diesel generators require less maintenance and fuel efficiency. Its disadvantage is that it is noisy, distinguishes more smoke and smell, and is difficult to start in cold weather.

Propane is expensive and possibly for homeowners who have a rally tank. Propane generators require less service, have no condensation and no problems of starting in cold weather, like diesel generators.

Always wisely invest in good quality generators. All generator brands are very good, but there are many ways to find the best.