A grid-tie electrical system is a system that generates electricity and is connected to the main power grid. These systems are typically based on renewable energy sources such as the sun or wind. Solar, or photovoltaic, or PV, grid-tie systems convert sunlight into electric current.

Solar panels absorb photons of light from the sun, producing DC current electricity. Another system component, the grid tie inverter, converts this DC current into AC current which can then either be used by electric "loads" in the home or it can be directed onto the main power grid for a credit toward your monthly electric utility usage.

A grid tie inverter is a special type of inverter that converts direct current electricity into alternating current electricity and feeds it directly into the existing electrical grid.The technical name for a grid tie inverter is “Grid-Interactive Inverter”. They may also call synchronous inverter. Grid-inverter typically cannot be used in standalone application where utility power is not available.


  • The advantage of GTI’s is that they are scalable, if you add more solar panels to your home you can simply add an additional GTI in parallel with your existing one to scale up your power handling capability.
  • GTI is less expensive than a comparable system that uses a battery bank for electricity storage. Battery storage systems are expensive and you also need to be replaced at least once during the life time of a typical solar power system.
  • As we are not using battery bank for grid tie inverter, GRID tie solar system will be most cost effective compare to all other solar power system.