System Types

Types of Solar PV System

ON-GRID SYSTEMS

Also known as Grid-tie or grid-connected system, connects directly to the Utility Grid through an electric meter and the owner of the system sells 100% of the produced electricity to the Government. This system does not require any batteries. “On-Grid” is mostly used as a long-term investment. This type of systems is the most common type of solar PV systems.

System components:

  1. PV panels (multiple panels make up an array)
  2. Mounting structure for PV-Panels
  3. Inverter(s)
  4. DC/AC Cables
  5. Required electrical safety gear (i.e. fuses, breakers, disconnects)

 

OFF-GRID SYSTEMS

​It is possible to install a solar system that is independent of the electrical grid. This is called an off-
grid system, and it requires that the solar panels are able to produce enough electricity to cover 100% of the energy needs of the building, which defines the Self-consumption concept. Most homes have higher electricity demand in the evening, so off-grid systems usually incorporate a battery to store energy produced during the day and use it for electricity demand at night. Although adding a battery to your system will dramatically increase its initial cost.

 

HYBRID SYSTEMS

It is possible to install a solar system that is independent of the utility grid but connected to a secondary source of electric power such as Diesel Generator, Wind Turbine…etc. This is called a Hybrid Off-Grid System, and it requires that the solar panels are able to produce enough electricity to cover as much as possible of the whole energy needs for the building or equipment. In that case the PV solar system can cover the electricity needs during morning hours. In the evening the electricity needs is covered by the other available secondary source of electricity which helps reduce the overall cost significantly. Hybrid Off-Grid systems may incorporate Batteries bank to store part of the energy produced during the day’s equipment’s idle time. Hybrid Off-Grid systems are most common in remote locations without utility grid.

System components:

  1. PV Panels
  2. Mounting structure for PV-Panels
  3. Batteries Bank (Optional)
  4. Charge controller to control the charging/discharging of battery bank (optional)
  5. Inverter(s)
  6. DC/AC Cables
  7. Required electrical safety gear (i.e. fuses, breakers, disconnects)
  8. Diesel generator, wind turbine or any source of electricity