SOLAR ENERGY
Environment
In the broadest sense, solar energy supports all life on earth and is the basis for almost every form of energy we use. The radiation that is received from the sun and utilized in the form electricity and thermal energy by using various available technologies like photovoltaic panels, solar heaters, etc. India's INDC’s commitment includes 100 GW of solar power out of 175 GW of renewable energy by 2022. Installed solar capacity has grown to 36 GW in 2020. Rooftop solar power accounts for 2.1 GW, of which 70% is industrial or commercial. India's solar waste is estimated to be around 1.8 million by 2050 also needs to be tackled.
VARIOUS SOLAR TECHNOLOGY
- Solar Photovoltaic Technology: Solar photovoltaic (SPV) cells convert solar
- radiation (sunlight) into electricity.
- Solar Thermal Technology: Solar Thermal Power systems use concentrated solar radiation as a high temperature energy source.
TYPES
- Solar for grid connected electricity.
- Solar for off-grid solutions.
NEED
- Energy security, economic development, social development, environment concern, UNFCCC targets.
ADVANTAGES
- Available in peak time, long life, low running cost, clean, abundant, no transmission loss.
DISADVANTAGES
- High initial cost, space requirement, weather dependent, low production, storage costly.
ISSUES AND CHALLENGES
- Lack of funding, restructuring, high cost, T&D losses, land scarcity, WTO issues, low demand.
GOVERNMENT INITIATIVES
- MNRE subsidy, solar at ports, National Solar Mission, IREDA, NISE, Solar parks, REC, VGF, Canal-top schemes, KUSUM, Suryamitra.
GLOBAL INITIATIVES
- ISA, OSOWOG.
ROOFTOP SOLAR SCHEME
- Commercial + residential systems, reduces fossil dependence, augments grid.
GRID-CONNECTED ROOFTOP SOLAR (PHASE II)
- Target 40,000 MW, DC-AC conversion, promotion to all sectors, subsidies 40% (up to 3 kW) and 20% (3–10 kW).
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Subject: Environment
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