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Solar Power Tree
Nov 30, -0001

solar power tree' that takes up only four square feet of space and generates enough power to run about five households is being upgraded to include a rotating motor to help it align with changing sunlight.

It has been developed by the CSIR-Central Mechanical Engineering Research Institute (CSIR-CMERI), a constituent laboratory of Council of Scientific and Industrial Research (CSIR).


The Solar Power Tree harnesses solar energy for producing electricity with an innovative vertical arrangement of solar cells. It thus reduces the requirement of land as compared to conventional Solar Photovoltaic layout, on one hand, while keeping the land character intact on the other. Even the cultivable land can be utilized for solar energy harnessing along with farming at the same time. The innovation finds its viability both in rural and urban areas.

  • Solar Power Tree innovatively addresses the challenge of increasing demand for Green Energy by gainfully utilizing scarce land resources in the country
  • The branches hold up the 30 photovoltaic panels and the system costs around Rs 5 lakh with battery back-up. Because the solar panels are higher up, it can get one hour more sunlight.
  • It uses four square feet of land to produce 5KW of power. We are now improving the design and incorporating a motor which would be aligned with a timer so that the tree can move from east to west depending on the sunlight. This way it can absorb maximum solar energy.
  • it would be possible to harness 10 percent more power by rotating panel direction twice in a day by using a module that aligns itself with the movement of the sun.

The Salient Features of the Solar Power Tree are:

  • It takes only 4 square feet of land for a 5 KW Solar Power tree, whereas in a conventional layout, it requires 400 square feet of land.
  • By holding the photovoltaic panels at a higher height, on an average it gets more sunrays for one hour in a day. As a result, it is possible to harness 10-15% more power in comparison to a conventional layout on ground.
  • It has a battery back-up of 2 hours on full load, hence giving light even after sunset.
  • It is facilitated with water sprinkler at the top for self-cleaning of panels, that increases the efficiency of the solar panels.
  • The estimated cost of the device is around Rs. 5 Lakh for a 5 KW specification.

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