8.3 Wind Power

8.3.1 Barriers

  • High investment requirements
  • Intermittency of wind resource, leading to problems in scheduling the wind power
  • Dispersed nature of resource posing difficulties in tapping wind energy resource from far–flung areas, especially from the point of view of load centers
  • Low peak coincidence factor that leads to problems in matching wind power availability with demand
  • Power off-take problems due to grid instabilities
  • Grid up-gradation required to tap the full potential of wind power in Tamil Nadu
  • High reactive power requirements for start-up
  • Non-availability of high efficiency wind turbines for low wind regimes
  • Subsidy on fossil fuels, non-internalization of socio-environmental externalities, and irrational electricity tariff structure
  • Non-availability of proven short-term wind power forecasting tool for India
  • Inadequate infrastructure facilities and poor access to transmission and distribution networks
  • Complexity of land acquisition in resource-rich areas, especially forest areas
  • Long delays in payment by distribution utilities.

8.3.2 Recommendations

  • The state needs to ensure (a) evacuation facilities at the potential sites, (b) grid access at nominal charges, if any, and (c) grid stability for reliable power off-take and better capacity utilization.
  • To encourage private participation, the state-level policy and regulatory regime (e.g. third-party sale, tariff setting, wheeling, and banking of power) should be long-term and stable.
  • The renewable purchase obligation should be adequate to incentivize the state utilities/designated consumers ,to procure wind power. This also includes a mechanism to ensure timely compliance.
  • Wind power supply option needs to be included in utility's unit commitment approach.
  • Investment in development of comprehensive wind energy forecasting models suitable for Indian climate and grid conditions is an urgent requirement. It would be necessary to test the model on wind farms in India, which require a day ahead forecasting with 15 minute time interval to meet the conditions of Indian Electricity Grid Code 2010.
  • Measures need to be taken for better operation and maintenance of wind power systems and better technological performance leading to improved capacity utilization.
  • Baseline projections need to be redefined in the light of investment requirements and a preparedness plan developed for accelerated penetration under carbon mitigation scenarios.
  • Clear policy from government on re-powering for wind turbines may be worked out so that wind power output in Tamil Nadu could be enhanced.
  • Tamil Nadu too might levy a green cess to create a 'clean energy fund' that can be utilized for infrastructure strengthening for solar and wind power projects.
  • Apart from developers, local manufacturing of components related to solar and wind should be promoted by giving special benefits and tax breaks. Taxes and duties on balance of systems should be reduced so that cost of the overall system can be brought down.
  • The State Electricity Regulatory Commissions should look in to the issue of late payment of dues the generators by the distribution utilities in order to devise a suitable mechanism for the timely payments.