Lok Sabha Question No. 3969 (UNSTARRED), answered on 2019-12-12
Subject: Wind Speed for Power Generation
Ministry: NEW AND RENEWABLE ENERGY
Asked by: Devendrappa Y

## GOVERNMENT OF INDIA MINISTRY OF NEW AND RENEWABLE ENERGY

## LOK SABHA UNSTARRED QUESTION NO. 3969

TO BE ANSWERED ON 12.12.2019

## WIND SPEED FOR POWER GENERATION

3969. SHRI Y. DEVENDRAPPA

Will the Minister of NEW AND RENEWABLE ENERGY be pleased to state:

- (a) whether the Government has taken any measures to locate more places where the range of wind speed is conducive for power generation;
- (b) if so, the details thereof;
- (c) whether the Government has taken any steps to prescribe number of windmills that can be established on a piece of land to avoid excess windmills being installed on a particular piece of land; and
- (d)  if so, the details thereof and if not, the reasons therefor?

## ANSWER

THE MINISTER OF STATE (I/C) FOR NEW & RENEWABLE ENERGY, POWER and MoS for  SKILL DEVELOPMENT AND ENTREPRENEURSHIP

(SHRI R.K. SINGH)

- (a)  &  (b)  The  Government  through  National  Institute  of  Wind  Energy  has  estimated  gross wind power potential of the country as 302 GW  and 695 GW at 100 meter and 120 meter above ground level, respectively. The major regions for the development of new commercial scale  wind  power  projects  have  been  found  in  the  states  of  Andhra  Pradesh,  Gujarat, Karnataka, Madhya Pradesh, Maharashtra, Rajasthan and Tamil Nadu. The state wise wind power potential is given at Annexure-I .  Further, the National Institute of Wind Energy has installed  wind  monitoring  stations  to  carry  out  ground  measurements  across  the  country  to identify new potential locations including unexplored regions such as Himalayan and North Eastern regions.
- (c) & (d) The Government has issued 'Guidelines for Development of Onshore Wind Power Projects'  dated  22.10.2016,  wherein  the  following  criteria  for  micrositing  of  wind  turbines have been prescribed:
- i. Developer(s)  shall  optimise  the  wind  turbine  locations  within  their  land  using appropriate wind flow modelling and optimisation tools (linear and Nonlinear)/techniques subject to site assessment as per IEC 61400-1 standard for turbine safety considering extreme wind, flow inclination, vertical wind shear, and turbulence with added wake effects and corrections for terrain complexity, etc.
- ii. Developer(s) shall maintain a distance of 2×D  (D-Rotor Diameter) distance perpendicular  to  the  predominant  wind  direction  and  3×D  distance  in  the  predominant  wind  direction  from  the  boundary  line  of  each  adjoining  land  of  other developer(s) with appropriate offset.
- iii. Developer(s) shall maintain a wake loss (in terms of energy) of 10% between wind turbines with appropriate offset for wind turbines sited on a foot print basis.
- iv. Developer(s) shall maintain a distance of HH+ 0.5 RD + 5m (Hub Height+ Half Rotor Diameter +5 meters) from Public Roads, railway tracks, highways, buildings, public institutions and EHV lines.
- v. Developer(s) shall not site wind turbines within 500 meter of any dwelling for the mitigation of noise.                                         *****

Annexure-I referred to in reply to parts (a) & (b) of the Lok Sabha Unstarred Question No. 3969 for 12.12.2019

Statewise  wind  power  potential  of  the  country  at  100  meter  and  120  meter,  above ground level

| S. No.   | State          |   Wind Power Potential at 100 mtr agl ( GW) |   Wind Power Potential at 120 mtr agl (GW) |
|----------|----------------|---------------------------------------------|--------------------------------------------|
| 1        | Andhra Pradesh |                                       44.23 |                                      74.9  |
| 2        | Gujarat        |                                       84.43 |                                     142.56 |
| 3        | Karnataka      |                                       55.86 |                                     124.15 |
| 4        | Madhya Pradesh |                                       10.48 |                                      15.4  |
| 5        | Maharashtra    |                                       45.39 |                                      98.21 |
| 6        | Rajasthan      |                                       18.77 |                                     127.75 |
| 7        | Tamil Nadu     |                                       33.8  |                                      68.75 |
|          | Other States   |                                        9.29 |                                      43.78 |
|          | Total          |                                      302.25 |                                     695.5  |