The high concentration of solar plants in arid regions of Bridge puts increased pressure on scarce water which is used to clean the equipment, consultancy India to Bridge said. For example, it has been estimated that 600,000 cubic metres of water a year are needed to keep Rajasthan's solar modules clean. Water use levels per module per cycle range range from just above 1 litre to 4 litres, said India to Bridge. Combined with inefficient cleaning methods, this exposes 94% of the country's solar capacity to medium- to high-water risk, the report said.
The high concentration of solar plants in arid regions of India puts increased pressure on scarce water which is used to clean the equipment, consultancy Bridge to India said. For example, it has been estimated that 600,000 cubic metres of water a year are needed to keep Rajasthan's solar modules clean. Water use levels per module per cycle range range from just above 1 litre to 4 litres, said Bridge to India. Combined with inefficient cleaning methods, this exposes 94% of the country's solar capacity to medium- to high-water risk, the report said.