Advantages of Solar Energy
- Absolutely clean energy source
- Available for total life of earth and civilisation and absolutely free of cost.
- In situ availability at most locations on this globe that means no logistics cost for producing power
- Suitability for all sizes of non grid requirements starting from smallest solar cells for watch, torch, lantern etc to remote homes, remote villages and finally mega power plants for national grids.
- Amenable to use in houses, row of houses,large buildings,hospitals,school buildings etc. particularly in modern planned cities with effective skyline controls. In fact all new localities and townships can have architectural controls to make effective use of standalone solar power potential of each building. In fact a small middle class home with a roof area of about 130 sq. mtrs. can produce electricity to the tune of 500-700 kWh/day in a typical central India locale.
- In a small town of 15-16 sq. km area through a 100 metre wide integrated corridor along the periphery for installing solar panels, the requirements of the whole town can be met with a distribution network only. The high cost of transmission lines and allied losses can be totally done away with.
- Available only for limited time during a day and that too only on sunny days. So either we have adopt a solar thermal power station (with 30% conversion efficiency) with cost effective thermal storage or tweak the solar panel power (photo voltaic with 15% conversion efficiency) with energy storage batteries and an instantaneously switchable electricity generator.
- Large tracts of land are required for setting up of solar farms. The land resource is so very scarce in most countries. However it is not a problem in Indian Thar desert and African Sahara desert as both have very little population and are more or less barren. Additionally the land employed in the form of corridors along rail and highway network and irrigation canal system running into thousands of kilometres can be gainfully utilised with no extra burden on land resources. Incidentally the rail and highway corridors emanating from Delhi in all directions total upto 1200 Kms and if a 50 metre width can be used for collection of solar energy, a potential of about 1000 MW is available which can easily meet the requirements of area covered by200 kms radius around Delhi.