What are the benefits of a grid-tied power system?
The owner of a grid-connected solar energy system can both buy and sell electricity each month. This is because electricity generated by the solar energy system can be used on-site, or fed through a meter into the utility grid. California’s net metering law provides that all utilities must allow customers with solar electric systems rated up to 1.5 MW to interconnect with the local utility grid and receiving retail value for the electricity produced. The utility serves as a backup to the solar power system similar to the way in which batteries do in stand-alone (off-grid) systems. The other benefit of a grid-tied power system is the Time of Use (see below).
