Solar System Types
Grid-Inter-Tie solar system:
These solar systems are tied to the local utility. The utility acts like an energy bank. When the solar system is producing more energy then the owner is using, the extra energy is sent back to the utility grid and banked. When an owner is using more electricity then the solar system is producing, the owner withdraws energy from the utility. The utility meter keeps track of these deposits and withdrawals.
Off-Grid-Solar-Systems:
These types of systems are usually found in remote area's where utility service is not available. Solar panels are used to charge batteries during the day, and the battery's supply energy to the owner when it is needed. Most off-Grid systems also utilize a generator to charge the batteries during times of excessive use, and extended periods of minimal sunshine.
Hybrid Systems:
Sometimes call AC-Coupled systems, are grid-tie-systems with battery storage for when the Utility is down. When the utility (i.e. PG&E), has a power outage, a customer on this type of system, will continue to have power from the energy stored in their batteries.
