How Photovoltaic Systems Work

There are three basic types of solar energy systems available for residential and commercial use: (1) Grid-Tie (2) Grid-Tie with Backup and (3) Off-Grid.

All three of these solar panel system options use solar photovoltaic (PV) panels and are typically installed on the south-facing roof of your structure in East Texas. These solar panels power the system, producing DC (direct current) electricity when the sun is available. (If roof space is restricted or compromised, then our solar company can offer alternative solutions.)

Off-Grid Systems

Off-grid solar panel systems are typically employed where access to the electric utility grid is unavailable or when complete energy independence is desired.

For these systems, DC power is sent to a battery charge controller that charges the batteries and prevents overcharging. The DC power from the solar panels and batteries is routed to either DC circuits in the house or to an inverter that converts DC to AC (alternating current) electricity. The AC power is then diverted to the AC circuits in the house.


Batteries are the heart of the solar power system. If the battery bank is not large enough to compensate for periods without sunshine, then the house will not have electricity.

Fossil fuel generators or wind generators are typically used to generate emergency power if the battery bank becomes depleted.
Off-grid solar power requires the most complex engineering and maintenance of the three major types of solar energy systems we offer here at GreenLife Technologies.

Our solar power company can design a custom off-grid system for your needs! Just contact us today for a free consultation.

To see our portfolio visit our projects page here.