If even 10% of the 19,000 km-long Narmada canal network in Gujarat is used for setting up canal-top solar panels, it has the potential to produce 2,200 megawatt (MW) of solar power, save 11,000 acres of land that would otherwise be used andprevent 2,000 crore of precious water from evaporation annually, the Chief Minister, Mr Narendra Modi, said here on Tuesday evening.