20th Day :: Solar roofs
we should use Solar-roofs. I don't think it has any technical or other problems. Practically what problem it has i don't know otherwise it is a good alternative of traditional energy sources. perhaps cost is higher, but in case of solar-roofs it can save money of concrete roof. then what's the problem? After 10 hours of charging in day, it can deliver atleast 5-6 hours of sufficient use of electricity. It's cost may be lower also if government promotes it by subsidising it with noticing that it is a most environ-friendly & can save the land & water uses especially for water-electricity + air-pollution made by Heat-electricity based on coal. Also it can be used at a large scale in dessert areas like Rajasthan,where a lot of land is useless. If there we establish a big solar-plant,then we can get double benefit- 1st is a lot of electricity & 2nd is shedding if used over roads.