Today, we continue our review of the options for solar backup systems. We’re going to be reviewing the ways the generator backup works.
Cost-Effective Backup: Generators
For a given level of power output, generators are usually the least expensive option for backup power production. In the vast majority of residences Akeena evaluates, generators end up being the best choice to provide the most reliable and cost-effective source of extended backup power, especially in areas where frequent electricity power outages are the norm. They are independent motors powered by gasoline or are electrical and fed by the utility and connect directly into the electrical system of your home. Homeowners in areas with infrequent power outages (the majority) do not typically need power backup of any kind for a grid-tied solar power system to be highly effective.
Saving (Power) for a Rainy Day
In these cases where backup power is a must, we recommend installing a relatively inexpensive generator in conjunction with a manual transfer switch tied directly to the electrical panel on your house. If it is a utility powered generator, the transfer switch directs the source of power for critical loads from the utility to the generator--without back-feeding the electric grid. For a gasoline powered generator, it is manually turned on and off and powered by gasoline poured directly into the unit by the homeowner.
During a period of power outage, the transfer switch is engaged and the generator is started. This provides power to the critical loads in the house.
In the next post, we’ll discuss the benefits of grid-tied systems. Stay up-to-date by following us on Twitter!
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