Solar power in the residential market is a growing trend, and more and more homeowners are taking advantage of solar energy. It is easy to understand why the idea of using the sun to help power your home sounds appealing. The price of installing solar panels has declined dramatically over the years, and a solar panel installation can provide a homeowner with fossil fuel-free energy for their home for about 20 years or more. As a result, it is not uncommon for homeowners to consider getting a solar energy system for their homes. However, many believe they do not need a battery backup because they have natural gas or other backup power.