A grid-connected PV system consists of solar panels, inverters, a power conditioning unit and grid connection equipment. It has effective utilization of power that is generated from solar energy as there are no energy storage losses. When conditions are right, the grid-connected PV system supplies the excess power, beyond consumption by the connected load to the utility grid. But, in stand-alone systems batteries are used to store energy or else energy has to be directly connected to load.

The system converts Direct Current (DC) electricity generated from PV panels into Alternating Current (AC) electricity, tying to the grid, through a grid-tie inverter. This inverter has Maximum Power Point Tracker (MPPT) algorithm that can maximize the power generated from solar panels. It is also able to synchronize to interface with utility line, in preference to use solar power source for appliances, and the deficit will be sourced from the electricity grid.

Properly configured, a grid tie inverter enables a home owner to use an alternative power generation system like solar or wind power without extensive rewiring and without batteries.

System characteristics

• Low installation and maintenance cost due to battery-free system.
• Simple, easy to operate.
• Easy to upgrade.
• Long lifespan (up to 20 years).
• Suitable for households, aesthetically designed for exterior of the house.
• Green to the environment & save on electricity bills.
• Automatically cut-off power when grid power is down, for safety.