The document discusses India's policies around repowering existing wind energy projects and developing solar parks. It introduces a policy from 2016 that aims to optimize wind resource usage by providing a framework for replacing old wind turbines with more powerful modern turbines. This repowering has the potential to significantly increase electricity generation from India's existing wind capacity. The document also outlines a solar park scheme to reduce costs by developing large solar projects over 500kW in capacity across various states. It provides funding support for planning and infrastructure to facilitate the establishment of these large solar parks.

1. N Renewable Energy
Policy for repowering of wind energy projects:
 It was introduced in 2016 by MNRE.
 Repowering project can often gain further cost saving.
 Aim of this policy is ensure the optimum usage of wind
resources by providing better framework for repowering.
 0.25% of an additional interest rate rebate and above it to new
wind projects being financed by IREDA.
 The policy has the potential to turn around a bulk of 27,000
MW of existing installed wind generation capacity in country.
 The repowering refers to replace the wind turbines with more
powerful and modern units to raise electricity generation.
 Replacing of old machines with new once, to produce more
electricity with modern technology.
 India was started harnessing wind power around 1990 and the
already installed capacity of 27000 MW is 4th
largest after
china.
 The most of wind turbines are capacity of 500KW which are
installed up to year 2000 at sites having high wind energy
potential.
 Below 500KW capacity of wind turbines are found around
3000MW capacity installations.
 Below 500KW range capacity of turbine are still in operation in
many states as Tamil Nadu, Gujarat, Madhya Pradesh.
 Repowering is required to optimally utilize the wind energy
resources.
 Capacity of wind turbine below 1MW are eligible for
repowering

2. N Renewable Energy
 Through the respective state nodal agency the repowering
projects would be implemented in the promotion of wind
energy in state.
 The ministry also clarified that no additional financial liability
will be met by MNRE for implementing the repowering policy.
 By applying the repowering of wind energy project policy the
production of electricity was increased.
 The present policy initiatives by the Government is a good
start, considering the complexities involved.
 The repowering business model, developed in this study,
considers several implementation issues regarding technical,
commercial, regulatory.
 Government must bear the burden of the difference between
the lower tariff as mentioned in the PPA and the actual cost of
generation from a repowered project for the remaining period
of the existing PPA.
 As per the MNRE Tamil Nadu has the highest installed wind
power generation capacity.
 The Repowering Policy would be reviewed by the Government
as and when required.
Developmentof solar park scheme:
 Solar power projects can be set up anywhere in the country,
however the scattering of solar power projects leads to higher
project cost per MW.
 This scheme has formed by MNRE by aiming to set solar parks
in various states.
 The capacity will be above 500kw as design.

3. N Renewable Energy
 This scheme has Propose to offer financial support by
government to establish.
 MNRE executing a scheme for development of 25 solar parks
with capacity of 800 MW by each park.
 In 2014 the government of India launched the solar park
scheme with 800 MW capacity within a span of 5 years from
2014
 So far, MNRE has approved 38 approved solar parks with a
capacity of 608 MW across 16 states.
 Due to excellent response and more demand of solar park the
capacity has been increased
 The capacity of the scheme has be enhanced to 40,000 MW
vide ministry order in 2017
 These parks are with capacity of 500MW and above.
 Under this scheme the ministry provides CFA of 25lakhs per
solar park for preparation of detailed project report.
 Beside this CFA includes Grid-connectivity cost also provided on
achieving the milestones prescribed in scheme.
 The solar park scheme is an excellent example of Indian
government commitment to sector and bold policy making.
 The progress has been constrained by lack of planning,
extensive delays, poor infrastructure quality and high cost.
 The changes as been made to scheme are a step in right
direction and should lead more effective delivery.
 Extension in the timeline of solar park scheme and change in
implementing agency done in 2021.
 The park developers are designated as solar power park
developer (SPPD).

4. N Renewable Energy
 The responsibilities for SPPD are acquisition of land, developing
approach road to each plot, providing basic drainage, water
supply.
 Major challenge in development of solar park is acquisition of
land.
 The change in matching the timeline between development of
solar parks including power arrangements and setting up solar
project.
Technology advancements:
Floating solar installations:
 It is called as Floatovoltaics (FPV)
 Solar panels will be float in water by forming the panels on a
mounted structure to float in lake.
 since 2016 the market for these renewable energy is rapidly
grown.
 The cost of floating system are 25% higher than the ground
mounted system.
 No need the land for the floating plants, except for the electric
cabinet and grid connections.
 It will cover the enter lake and reduce the water evaporation
based on covered surface.
 Cooling the floating structure is simple.
 The energy gain reported from 5 to 15%.
 The main challenge in floating solar is waves, the floating PV
system need to able to withstand wind and heavy waves.
 Maintenance activities and operations are general rule more
difficult to perform on water compare to land.

5. N Renewable Energy
 In water the system is required to have significantly increased
corrosion resistance, mainly in salt water.
Larger wind turbines are being developed and preferred
 Capacity and electricity generate per turbine will increase when
higher wind turbine towers and longer blades.
 Cost will decrease on per MW basis.
 By increasing technological component larger turbines are be
manufactured and more developers are topting to install large
turbine.
 Offshore wind has be particularly growing than onshore.
 Ge has recently built the world longest wind turbine blade.
 Halidade–x 12MW offshore turbine with 107 m blade and
220m rotor.
 Longer a rotor blade is the more wind a turbine can harness
and convert to electricity.
 The production of longer blades involves advanced structural
design and complex composite materials are use.
 LM wind power 107 meter blade is currently the longest in the
world.
 The 107 m blade is so large it would not fit any test facility and
had to have its tip cut off to enable the doors to close at ore
catapults test centre