Grid Tied Solar Power with Battery Backup
There is a common misconception with solar power systems, many consumers are under the impression that their grid tied systems will keep them up during a blackout. A grid-tied system hooks up with the grid and requires no batteries to store the power because the power generated is sent to the utility who gives you a credit for the power you send into the grid, therefore when there is a blackout your grid tied solar power system has no place to store the power and goes down with the utility company.
The down side to adding a battery backup to your grid tied solar power system is the batteries significantly increase the upfront cost of a solar power system. The batteries also require maintenance, could be a fire hazard, and need to be replaced every 5-10 years depending on the type of battery. Today, batteries are a headache until the technology evolves to make it more user friendly and cost effective.