Grid-Connected
with Battery Back-up

Very similar to the grid-connected system, this system adds a “battery bank” to collect the power generated from the solar panels. Power stored in the batteries can be used during power outages. The battery bank collects power produced by the solar panels, sends it through an emergency breaker box, and then into the home’s power system. The components of this type of system consist of the following:

  • Solar panels mounted on the roof or ground
  • An inverter to convert solar electricity from DC energy into AC energy
  • A battery bank for power storage
  • A charge controller to prevent overcharging the battery
  • A junction box that connects the solar panel wiring to the breaker panel on the home
  • A utility meter that displays the amount of power used, produced, and stored in the battery bank
  • A disconnect switch to prevent islanding during power outages
  • An interconnection agreement with your utility to ensure your safety and that of others



Grid-Connected

Off-Grid or Stand-Alone



Types of Solar Electric Systems

Grid-Connected

Grid-Connected with Battery Back-up

Off-Grid or Stand-Alone

Types of Solar Panels

Silicon Solar Panels

Thin-Film Solar Panels

Future Solar Panels

Costs & Incentives
Financing
Incentives
Net Metering
Red Flags for Solar Scams
Choosing a System
Purchasing Solar
Solar Leasing
Community Solar
Installation and Maintenance
Choosing an Installer or Contractor
Questions to ask a solar installer
What should my solar bid include?
How Solar Works
Types of Solar Panels
Types of Solar Electric Systems
Resources
Solar Legislation
Reports and Publications
Training Programs
Solar Related Terms
Local Government Resources
Solar Press

Solar Photos

Office of Regulatory Staff
Energy Office
1401 Main Street, Suite 800
Columbia, SC 29201