The Ministry of New and Renewable Energy (MNRE) has issued a significant amendment to the guidelines for onshore wind power projects, focusing primarily on the micrositing of wind turbine generators (WTGs).
Micrositing is key to maximizing energy production by strategically placing WTGs considering all physical constraints of the area. This amendment promises to boost the efficiency and effectiveness of wind power projects across India.
Read more about MNRE’s strive towards bolstering India's wind capacity surge and upcoming investments!
Optimized locations for WTGs can be determined using appropriate wind flow modelling, optimization tools, and techniques suitable for any terrain conditions. The criteria for micrositing are now based on achieving an optimized output rather than adhering to a mandated minimum distance between wind turbines.
The criteria for micrositing are now based on achieving an optimized output rather than adhering to a mandated minimum distance between wind turbines. Developers are required to optimize wind turbine locations using appropriate wind flow modelling and optimization tools, following site assessments as per the IEC 61400-1 standard for turbine safety.
The guidelines specify that developers must maintain 5D (where D is the rotor diameter) between turbines if they are perpendicular to the predominant wind direction, and 7D if they are in line with the predominant wind direction. If adjacent turbines owned by different developers have dissimilar rotor diameters, the larger rotor diameter should be used for the 5D and 7D calculations. However, these distances may be reduced if there is mutual consent between the adjacent turbine developers.
Developers are prohibited from siting wind turbines within 500 meters of any cluster of dwellings to mitigate noise. A cluster of dwellings is defined as at least 15 inhabited buildings unless state-specific norms dictate otherwise.
These updated micrositing techniques help facilitate repowering and intercropping, allowing investors and developers to maximize the use of available land without being constrained by minimum distances, thus ensuring optimized utilization of land with wind resources.
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