How Solar Works?
Solar Plant Components
Do you know that there are close to 73 different components and 4 different services that go into installing your Solar PV System. While Solar Panels and Inverters are the most visible and important items in the plant, it is the smaller equipment called Balance of System that make a difference between the system functioning normally or breaking down regularly.
The Solar Panels placed on your roof generate DC electricity. This DC electricity is converted to Alternating Current Electricity (the one we use for our home appliances) through an On-Grid Solar Inverter. The DC Distribution box is in between the Panels and the Inverter to protect the inverter and appliances from any surges or high current, high voltage situations.
The AC power is fed into your home’s electricity distribution board which then distributes this power to either your appliances in your home or exports excess power to the electricity grid. The Bi-directional Net meter installed at your home during the solar installation will measure the power going inside your home and the power being sent to the grid from your home as ‘Import’ and ‘Export’ respectively.
The inverter connects to the internet through your home/office’s WiFi and keeps sending Solar generation data and maintenance reports. All this power generation can be monitored on your phone or computer through an app that we provide. This is a simple explanation of how your On-Grid Solar PV plant works in layman terms.
Please do note that this system does not have batteries or it doesn’t work during power cuts. The grid itself acts as a giant battery and all the energy you produce or consume happens almost instantaneously.
How Net Metering Works
Now that you are relatively clear on how your Solar PV System works, let us explain how Net Metering works in the broader context below.
Solar Generation, Import and Export Visualised
It is a common misconception that what you see as “Export” on your bill is your total solar generation. It is not. The following graph illustrates the generation vs consumption pattern and how that gets translated into a net metering bill, for a household with a Solar Power Plant.
Import: When your consumption is high and you use all the solar power you generate + draw units from the grid.
Consumption + Export: When you generate more solar power than you can consume and so, excess power is exported to grid. In fact, export is the excess power that you sell to the Grid after consuming what you need within your own house. Double benefit!