Re-evaluation of wind potential needed

BANGALORE: “Official estimates are calculated at 50m height while turbines upto 120m are being installed, this roughly doubles the wind energy potential for states,” said Dr Kota Harinarayana, DRDO Scientist.He was discussing the Wind Power Density map released by the centre for Wind Energy Technology (C-WET) which measures wind density at 50 meters. Current forecasts peg Karnataka’s potential at 8591MW which could see a rise of almost double if new technologies are incorporated into the             calculations. “There have also been other advancements in the diameter of the blades and mechanics which help make the turbines more efficient,” he added. At greater heights, a turbine with bigger blades using more efficient parts would capture a greater amount of wind .Another advantage for the state, in favour of wind energy expansion is the option of using hydro electricity in a ‘Spinning Reserve’. Karnataka has hydel power generation capabilities which are independent of irrigation. These reservoirs can be used in tandem with wind energy. “This would help the state maintain a balanced grid,” said M R Sreenivasa Murthy, Chairman of the Karnataka Electricity Regulatory Commission (KERC).