Residential Solar Electricity Systems

SolarTherm - Alpha Thermal Systems
SolarTherm - Alpha Thermal Systems

Pioneers In The Sri Lanka Solar Industry

Residential Solar Electricity Systems

Residential solar electricity systems, also known as residential solar power systems or residential photovoltaic (PV) systems, are installations designed to generate electricity from sunlight for use in homes. These systems typically consist of solar panels mounted on the roof, inverters to convert the DC power generated by the solar panels into AC power usable by household appliances.

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Breakdown of the components


Solar Panels

These panels are made up of photovoltaic cells that convert sunlight into electricity. They come in various sizes and types, with monocrystalline and polycrystalline being the most common.



Solar panels produce direct current (DC) electricity, but most household appliances operate on alternating current (AC). Inverters convert the DC electricity from the solar panels into AC electricity that can be used to power appliances in your home.


Mounting Systems

Solar panels need to be securely mounted to your roof or the ground. The mounting system provides support and ensures that the panels are positioned optimally to capture sunlight.


Electrical Wiring and Components

This includes wiring to connect the solar panels to the inverter, as well as other electrical components necessary for the system’s operation, such as disconnect switches and meters.

Residential solar electricity systems offer several benefits, including:

reduce bill

Reduced Electricity Bills

By generating your own electricity from sunlight, you can reduce your reliance on the grid and lower your electricity bills.


Environmentally Friendly

Solar energy is a renewable resource that produces no greenhouse gas emissions or air pollutants during operation, making it environmentally friendly compared to traditional fossil fuels.


Energy Independence

Solar power gives homeowners greater control over their energy supply, reducing dependence on utility companies and fluctuating energy prices.

Net Metering Schemes


The electricity bill will be prepared giving credit to the export, and charging the consumer for the difference between the import and the export. If the export is more than the import in any billing period, the Consumer will receive an export credit, and will be credited towards his next month’s consumption. Such credits may be carried-over to subsequent months, as long as there is no change in the legal consumer for the premises.


This Scheme has introduced an additional element to the Scheme 01 where an export tariff for the net energy exported (if any) was introduced. If the generated units of electricity using the solar panels fixed in the roof are greater than the units consumed, the customer will be paid a fixed rate of Rs.37 per unit. There is also a variable rate introduced by the government. If the consumption is greater than the energy generated form the solar panels, consumer has to pay to the CEB at the existing electricity tariff for the excess energy consumed. 

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