2. Background
Solar energy is free source of energy
Solar radiation on earth surface per hour is equal to total
power consumption of earth for whole year.
Grid power in India is polluting, unreliable and inefficient
Solar energy is a renewable, clean alternative to fossil fuels.
solar energy is converted into electricity by using either photo-
voltaic or solar thermal
3. A modest 2.5kw solar power system can have over its
lifetime equivalent to
300 barrels of oil not produced
270,000 miles not driven
1,100 lbs of acid rain emissions not discharged
550 lbs of smog emissions not produced
220,000 lbs of greenhouse gases not emitted
equivalent to planting 500 trees.
Solar Energy vs Convectional Energy
4. •Jawaharlal Nehru National Solar Mission (MNRE, Govt of
India) launched in, 2010 by the Prime Minister, a target of
deploying 20,000 MW of grid connected solar power by
2022. It is enhanced by new government to 100,000 MW.
Target by 2022 Old
Revised
•Solar power 20,000 MW 100,000 MW
•Wind Energy 38500 MW 60,000 MW
• Others 13500 MW 15,000 MW
•Total 72,000 MW 175,000 MW
5. Incentives to Solar power plant
• Various incentives offered by central and state government, few
of them are
• Benefit in land registration for solar power plant
• 15-30 % subsidy for sanctioned project for equipments.
• Support in grid connectivity
• Depreciation benefits
6. 1MW SPV Power Plant : Initial casting
Sr No Item Unit @ rate
Cost
(lac)
1Land 6 Acre 600000 36
2Modules 1100000Watt 33 363
3Civil Structure 60,500Kg 66 44
4Inverter 1100000VA 11 121
5Transformer 1 27,00,000 27
6Protective devices 1 10
7Wires, Cables 10
8SCADA/RMS 10
9Installation 10
10Legal & official work 24
11Grid Evacuation 10
12Execution & commisioning 30
Total 695
7. 1MW SPV Power Plant : Financial
Plant Capacity 1000 KW
Plant Cost (in lacs) 0.695 lac/KW 695
Equity 30% 208.5
Debt 70% 486.5
Interst rate 12% 1.01
Payment Period (yrs) 9 108
EMI 7.3871
Maintenance & Manpower 3%
P V of Inverter Cost 132
Price reduction rate of Inverter 2%
• Area Shade free 3 Acre Only 80% of the input area is considered to adjust for potential
shaded areas
• Maintenance & Manpower 4% of project cost, with annual escalation of 5%
• Inverter lifespan is 10 years, with 2.00% annual cost reduction (110 % of capacity, @Rs 11/W)
• Accelerated depreciation is at 80.00%. It is assumed that the entire benefit of accelerated
depreciation can be claimed
• Corporate tax rate 35%
• Plant generation 4.7 kWh per KW per day, with 1% annual panel degradation and 10%
losses10%
• Debt service calculation assumes 70.00% debt; 2.00% interest rate; 9-year loan term with no
moratorium; repayable monthly through EMI
• Tariff 7.5 /KWH through PPA for 12 years
• Annual inflation 7%
10. 1MW SPV Power Plant : Financial
• Initial Investment : 6.950 crore
Equity : 2.085 crore
Debt : 4.865 crore
• Present Value of Investment : 12.56 crore
• Present Value of earning (PPA & REC) : 17.36 crore
• Present Value of Profit before tax :4.80 crore
• Payback period : 6 years
• Levelized cost of power : Rs 3.28/unit
• After payback period capacity enhancement of another 1 MW in same land can be
done with maintenance covered by first project
(conservative estimate of earning is made. No incentive by government is considered
in investment)