Solar Panel Covered Water Canals

"The cost of per megawatt of solar power, in this case, is likely to be much less than the estimated Rs 10-11 crore, as the two banks of the canal will be used to cover the canal by installing solar power panel and the government will not have to spend much on creating basic infrastructure, including land acquisition.
...

Assuming a utilisation of only 10 per cent of the existing canal network of 19,000 km, it is estimated that 2,200 MW of solar power generating capacity can be installed by covering the canals with solar panels.

This also implies that 11,000 acres of land can be potentially conserved along with about 2,000 crore litres of water saved per annum."

http://www.thehindubusinessline.com/government-and-policy/now-gujarat-to-cover-narmada-canals-with-solar-panels/article3346191.ece?maneref=http%3A%2F%2Fwww.thehindubusinessline.com%2Findustry-and-economy%2Fgovernment-and-policy%2Farticle3346191.ece&mstac=0