The grid inter-tied residential solar energy system is one of the most common types used in residential houses today. Here, the solar power system is directly attached to both the home and the conventional electric utility grid. This type of power system gives the homeowner the freedom to easily switch from solar power to the electric utility system and vice versa whenever they need to. What makes this advantageous is that when the home needs more energy than what the solar power system is producing, it can easily draw the power from the electric utility. For more information, click here