They're also covering water canals with solar panels, which a) makes use of otherwise wasted space, b) reduces evaporation of the water, c) reduces algal and weed growth which causes toxicity and flow problems and d) encourages cool shaded zones beneficial to local wildlife.

And e) increases the output of the solar panels - they perform better when cooler, and water is better at doing that than soil.

See https://en.wikipedia.org/wiki/Solar_power_in_India

There are incentives as well, for example:

>Haryana solar power policy announced in 2016 offers 90% subsidy to farmers for the solar powered water pumps, which also offers subsidy for the solar street lighting, home lighting solutions, solar water heating schemes, solar cooker schemes. It is mandatory for new residential buildings larger than 500 square yards (420 m2) to install 3% to 5% solar capacity for no building plan sanctioning is required, and a loan of up to ₹1 million is made available to the residential property owners. Haryana provides 100% waiver of electricity taxes, cess, electricity duty, wheeling charges, cross subsidy charges, transmission and distribution charges, etc. for rooftop solar projects

> Haryana provides 100% waiver of electricity taxes, cess, electricity duty, wheeling charges, cross subsidy charges, transmission and distribution charges, etc. for rooftop solar projects

I wonder why it's 'rooftop solar projects' specifically and not also inclusive of on-the-ground solar projects.