52India now ranks 4th in the world after Germany, USA and Spain with a wind power installed capacity of 4434 MW. The 10th Planaim at 1500 MW grid-interactive wind power has been exceeded as capacity deployed upto 31.12.2005 exceeded 2800 MWtaking the cumulative deployment to over 4500 MW. On current trends, grid-interactive wind power deployment could bearound triple the Plan target.8.2Wind Resource PotentialIndias wind power potential has been assessed at around 45,000 MW assuming 3% land availability for wind farms requiring@12 ha/MW in sites having wind power density in excess of 250W/sq.m. at 50 m hub-height. The potential for grid-interactivewind power would be less (around 15,000 MW) if sites having wind power density in excess of 300 W/ sq.m. at 50 m hub-heightare considered in keeping with international practice.8.3Wind Resource AssessmentUnder a special study sponsored for Wind Resource Assessment in the North Eastern Region, 22 wind monitoring stations havebeen set up with 25 m masts during 2005-06 in Tripura, Manipur, Mizoram, Assam, Arunachal Pradesh and Sikkim. Datacollection from another 47 wind monitoring stations established under various programmes is in progress. 21 Wind MonitoringStations with 50 metre tall mast were commissioned in 11 states namely, Chhattisgarh, Haryana, Jharkhand, Kerala, Karnataka,Madhya Pradesh, Maharashtra, Rajasthan, Tamil Nadu, Uttar Pradesh and West Bengal. The C-WET has published 7th volumeof Wind Energy Resource Survey in India containing wind energy resource data collected from 26 stations covering the Statesof Tamil Nadu, Karnataka, Andhra Pradesh, Maharashtra, Madhya Pradesh and Gujarat. It is also proposed to prepare a WindAtlas for India under the UNDP-CEC CCF-II Project.8.4Testing and CertificationTesting and Certification services are offered by C-WET. Accreditation of testing services by National Accreditation Boardfor Laboratories is under way. It has been planned to enhance the test facility at wind turbine test station Kayathar. C-WEThas evolved Type Approval Provisional Scheme 2000 for the country. Provisional Type Certification of one wind turbinemodel has been completed and it is underway for nine wind turbine models. Three draft Indian Standards have been preparedfor Safety Requirements, conformity testing and certification of wind turbines and power performance testing.Wind Turbines Installed at Sogi, Karnataka