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subsidy area




Andhra Pradesh


Pre-approved subsidy ~30%

Available for solar systems to be installed on roofs of below categories of customers:


All types of buildings

Applicable states

  • Educational Institutions
    • Schools
    • Universities
  • Health Institutions
    • Hospitals
    • Medical College
Type of System :

Grid-connected solar systems (without batteries)

System Sizes :

5kW, 10kW, 15kW, 20kW, 25kW

Features :

Included (remote Monitoring System + O & M for 5years)


31/2 Years to 41/2 Years

Return on Investment

20% to 25%
Contact us

+91 99013 30955

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Solar Water Heaters

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There are mainly two type of solar water heater technologies available depending upon the type of solar collector used to capture the sun's heat energy - Flat Plate Collector (FPC) and Evacuate Tube Collector (ETC).

The Collector in case of Flat Plate Collector consists of an insulated metallic box covered on the top with toughened glass. The metallic box contains an absorber sheet (normally made of copper) that is coated with a selective coating to increase the absorption of solar energy. Vertical tubes made of copper, known as riser tubes are attached to the absorber and carry the water to be heated. The riser tubes are connected to two horizontal tubes called headers, one placed at the bottom and the other at the top. The bottom header is used for flow of water into the collector whereas the top header is used to take out the heated water.

The Evacuated Tube Collector consists of two co-axial glass tubes fused at both ends with air between the tubes evacuated to create vacuum that works as insulation. The outer surface of the inner tube forms the collector area and it is selectively coated to increase the absorption of solar energy. is the authorized marketplace for Flat Plate Collector and Evacuated Tube Collector solar water heaters from leading Indian and global manufacturers - Racold, Solarizer, Bosch, Honeywell, Venus etc. and brings to you a wide selection of solar water heaters that you can buy online.

Which type of solar water heater is better FPC or ETC?

Flat Plate Collector (FPC) based solar water heaters are the most popular technology of solar water heaters available. Evacuated Tube Collector(ETC) based solar water heaters are more recent compared to Flat Plate Collector(FPC) based solar water heaters and are being adopted as they are more economical. The Flat Plate Collector has better durability and resistance against external damage compared to the Evacuated Tube Collector (ETC) and is the preferred technology in case of pressurized applications and in moderate climates where the night temperature does not dip significantly

For more details on the differences between Flat Plate Collector solar water heaters and Evacuate Tube Collector solar water heaters please visit the Knowledge central section on the website.

Which type of solar water heater should I buy?

If you need advice on the type of solar water heater to buy then please use the solar water heater product selector to input your requirements. The product selector will automatically recommend the exact models that you can buy online. In case of pressurized applications, the product selector will also recommend pre-engineered packages of the solar water heater and booster pump that you can buy online.

Learn more about solar water heaters

For more details on how the solar water heater works please visit the Knowledge central section on the website.

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