An overview of Indian power sector & Economics of Wind mill in Tamil Nadu Chairman Mr.K.Sekar MembersPresented by Dr.T.R.Shanmugam G.V.Venkatesh Dr.C.Chinnusamy
Energy is a major input for overall socio-economic development of any society.
Development of a country is highly correlated to per capita energy consumption.
Increasing population, modern civilization and technological advances contribute to increased consumption of energy.
Most of our energy demands are met by burning fossil fuels, which is accelerating global warming resulting to Increasing sea levels, Floods, Droughts, Earthquakes, etc.
The prices of the fossil fuels steeply increasing ,So renewable energy are expected to play a key role.
Wind energy is the fastest growing renewable energy.
Wind turbines are up to the task of producing serious amounts of electricity.
Wind energy has started making meaningful contributions to the overall power requirements of some States.
Turbines vary in size from small 10 kW structures to large machines rated at 2 MW or more.
Objectives To study the world, India and Tamil Nadu wind energy scenario. To identify the demand and supply of power consumption in Tamil Nadu To evaluate the financial analysis of wind mill in Tamil Nadu.
Tools used for analysis Percentage analysis Financial investment analysis
Worldwide Wind Power Installed Capacity (As on 30th June 2010) (Source : Wind Power Monthly, October’2010)
Worldwide Wind Power Installed Total Installed Capacity : 166199 MW (Source : Wind Power Monthly, October’2010)
Wind Power Density in India (Source : MNRE)
India State Wise Installed Capacity as on 31.03.2010 (Source: indianwindpower.com)
India State Wise Installed Capacity as on 31.03.2010 17.6 15.8 12.5 41.6 9.2 Total Installed Capacity : 11806.69 MW (Source: indianwindpower.com)
Growth of Installed Capacity as on 31.03.2010 17.6 15.8 12.5 41.6 9.2 (Source: indianwindpower.com)
State-wise Unit Generation Data (kWh)(As on 31st March 2010) (Source : MNRE)
Unit Generation Data (kWh) (As on 31st March 2010) (Source : MNRE)
Tamil nadu Scenario Wind generation is the fastest growing energy source in this decade , expanding at 25% a year. Tamil Nadu is a pioneer State among all the states in India in promoting Wind Energy programme. Tamil nadu contribution is around 42 % of the country’s installed wind power capacity. Tamil Nadu is blessed with conducive natural meteorological and topographical settings for wind power generation.
Total Power Generation Capacity (MW) (As on 31st March 2010) Total Generation Capacity :15800.315 MW (Source : TNEB)
Peak Demand Met and Unrestricted Demand (MW) (Source:SRLDC)
Energy availability &Requirement(MU) (Source : SRLDC)
80% Accelerated depreciation on wind electric generators for income tax calculations subject to a minimum utilization for 6 months in the year in which deduction is claimed.
Import of wind electric generator is permitted under Open General License.
Customs duty concessions on wind electric generators and certain essential spares.
10 years Tax holiday in respect of profits / gains from private wind electric generators.
Generation Based Incentive(GBI) @ 50 paise/ Kwhr
Benefits of wind energy
Fastest payback period.
Lowest gestation period; and a modular concept.
Operation and Maintenance (O&M) costs are low.
No marketing risks.
Fuel source is free, abundant and inexhaustible.
Creation of local employment opportunities.
Improvement of power transmission networks.
Reduction of transmission cost.
Improvement in quality of power.
Long term energy security.
Overall development of the area.
Government Policies Incentives
Central & State Government Policy Highlights:
80% accelerated depreciation.
Excise duty/import tariff concessions.
Tax holiday for power generation.
Wind energy quota.
Provision of banking, wheeling and third party sale of power.
Other financial incentives/subsidies in certain states.
Foreign Investment Policy: Automatic approval for foreign investors to enter into Joint Venture with an Indian partner for financial and/or technical collaboration/setting up of RE based power projects (100% equity permissible)
Limitations of Wind Energy
Can be located only where strong and dependable
winds are available.
Wind is intermittent and hence infirm power.
Wind towers and blades subject to damage from very high wind and lightning.
Electricity produced by wind sometimes fluctuate in voltage and power factor
Eligible for carbon credit benefits under the Kyoto Protocol for a decade from 2002.
Estimate drawn up by the Infrastructure Development Finance Corporation (IDFC), each unit of electricity produced by wind power, could earn 15 paise worth of carbon credits.
As per a rough calculation, a 600/750 KW turbine can earn its O&M cost per year.
The ‘Prototype carbon fund’ of the World Bank encourages investor to fund renewable energy projects. Investors are given pro-rata share of the CERs produced from their investment.
India contributes 11.5% to the volume of CER’s from registered projects Carbon trading is an important market driver; a recent alert spoke of India standing to gain $5 billion from carbon credit in next 6-7 years
Small aero generator (Mini-wind mills) Stand alone type generator used to produce electricity for captive purposes. Installed in place wind speed is more than 15 kmph. 41 places have been identified in 8 districts from 67 sites surveyed which are suitable for installing aero generators. Consists of smaller capacity wind electric generator, (up to 30 kW) a tower, a battery bank with an inverter and electronic control system.
Economics (Tentative) Cost of system - Rs.2.50 - 3.00 lakhs / kW. MNRE Subsidy for the system for 2007-08, up to 50% of Ex-works cost for individuals and 75% for community users subject to a maximum limit. (subject to change) Saves around 2500 kWh per kW per annum depending on wind speed and duration.
Wind energy is pollution free and nature friendly
Wind energy has very good potential and it is the fastest growing energy source
The future looks bright for wind energy because technology is becoming more advanced and windmills are becoming more efficient
Inside the Wind Turbine
Wind Mill Water pump Ideally suited for pumping water for drinking purposes and / for minor irrigation. The wind speed is about 18 kmph. Gear-type wind mills are also available which can operate at a speed of 9 kmph. Types 1. Gear type and 2. Gearless type.
Potential for use
Economics (Tentative) Cost of system - Rs.1.50 to 2 lakhs. MNRE subsidy available for 2007 - 08 Rs.30,000/- per pump for Gear type and Rs.45,000/- per pump for AV55 Type (subject to change) Saves around 1500 kWh per annum depending on wind speed and duration.