This presentation highlights on the following : Need of wind-solar hybrid systems Indian policy support to hybrid systems - MNRE & Gujarat State Renewable Energy integration with grid, Cost savings in hybrid for AC-AC & DC-DC coupling systems, Case studies

1. GENSOL ENGINEERING PVT. LTD
www.gensol.in
Emerging Opportunities - Solar & Wind Hybrid Systems

2. SINGLE AXIS TRACKER- TYPE & TECHNOLOGIES
Solar Wind Hybrid System – Market Outlook
Increasing demand for clean fuel micro grid and smart grid
electricity will boost and drive the market demand for global
hybrid solar wind systems.
Hybrid Solar Wind Market size was over USD 700 million
(approx. INR 4765 Crores) in 2015 with forecasted to be
more than 8% from 2016 to 2024.
SECI issued a RFS for 2500 MW ISTS connected Wind Solar
Hybrid Power Project
Gensol GroupSource : https://www.gminsights.com/industry-analysis/hybrid-solar-wind-market
Economically, solar-wind hybrid systems have the potential to save about 7-10% in capital investments
owing to the synergies. Wind & Solar in most part of the country are complement to each other.

3. SINGLE AXIS TRACKER- TYPE & TECHNOLOGIES
Indian Scenario- Outlook & Upcoming Projects
Gensol Group
1
•To encourage the development of wind solar hybrid system the GoI set a target of 10GW from Solar Wind Hybrid.
2
•200 MW hybrid power plant coming up at Ramagiri, Anantpur by National Renewable Energy Development Corporation (NREDCAP)
and SECI.
3
•MNRE’s Program to Set Up 2.5 GW ISTS-Connected Wind-Solar Hybrid Projects Approved and SECI will be the nodal agency for the
implementation of this program. RFS highlighted
6
•The state of Andhra Pradesh released a draft document outlining its plans for 3GW of wind and solar hybrid projects by 2019/20.
7.
•Kerala’s Agency for Non-Conventional Energy and Rural Technology (ANERT), is working on an experimental technology demo to 3MW
of solar, 4MW of wind, and battery storage.
•Hero Future Energies has completed India’s first large-scale solar and wind energy hybrid project in Kavithal, Raichur District in the
state of Karnataka. Project includes an existing 50MW wind farm, now has a neighboring 28.8MW solar PV site to form a hybrid system.
5
• The Solar Energy Corporation of India (SECI) has announced plans to issue a tender to develop 2 gigawatts of solar and wind energy capacity. SECI will
auction 1 gigawatt of solar and 1 gigawatt of wind energy capacity at a location likely to be disclosed once the actual tender documents are released.
Source - https://mercomindia.com/,
http://seci.co.in/show_whats_new.php?id=596

4. SINGLE AXIS TRACKER- TYPE & TECHNOLOGIESIndian Policy Support – National Wind Solar Hybrid
Policy
• To reduce the intermittency of the power sources.
• Minimization of the variability
• Optimally utilizing the infrastructure including land and transmission system
Gensol Group
Name of Implementing Policy – National Wind Solar Hybrid Policy Date of Issue – 14th May 2018
Policy Highlights
Wind-solar hybrid power plants, Wind Turbine Generators (WTGs) and Solar PV systems will be configured to operate at the same point of
grid connection.
A wind-solar project will be considered a hybrid project if the rated power capacity of one resource is at least 25 percent of the rated power
capacity of other resource.
The power procured from the hybrid project may be used for fulfilment of solar RPO and non-solar RPO.
No additional connectivity or transmission capacity charges will be levied by the respective transmission entity for the hybridization at
existing wind or solar projects.
Battery storage can be added to the hybrid project to reduce the variability of output power from wind solar hybrid plant.
All fiscal and financial incentive available to wind and solar power projects will also be made available to hybrid system.
Source : https://mnre.gov.in/sites/default/files/webform/notices/National-Wind-Solar-Hybrid-Policy.pdf
Motive-

5. SINGLE AXIS TRACKER- TYPE & TECHNOLOGIESIndian Policy Support - Gujarat Wind Solar Hybrid
Policy
• To provide a frame work for the promotion of large grid connected wind solar PV system for optimal and efficient
utilization of transmission infrastructure and land,
• reducing the variability in renewable power generation and thus achieving better grid stability.
Gensol Group
Name of Implementing Policy – Gujarat Wind Solar Hybrid Policy Date of Issue – 21st June 2018
Policy Highlights -
The Wind Hybrid Solar Power Generation Plants are divide into 2 categories : Type A – Category includes conversion of existing / under
construction Wind or Solar power plant into Hybrid one.; Type B – New Wind Solar Hybrid power generation project.
The total power injection into the grid is not more than the transmission capacity allowed by GETCO for this purpose. The developer may
approach GETCO for determining additional wind/ Solar capacity evacuated through existing transmission line.
The developer for new Hybrid project shall establish evacuation line upto receiving end sub- station of GETCO
In case the total injection of power from hybrid system exceeds allocated sanctioned transmission capacity such power shall be considered as
inadvertent flow of power and shall not considered for commercial settlement
Both wind and solar PV system shall use separate set of internal electrical lines & equipment's. Energy generation from Wind/Solar capacity shall
be measured separately at pooling/sending end Substation on 15 Min time block by installing ABT compliant meters by project developers.
Exempted from payment of electricity duty & exemption from demand cut to the extent of 50% of installed capacity.
Operative Period – 5 years
Source : https://geda.gujarat.gov.in/news_single.php?news=162
Motive-

6. SINGLE AXIS TRACKER- TYPE & TECHNOLOGIES
Policy Related & Other Challenges
Gensol Group
Necessary standards and regulation including metering methodology and standards, forecasting and scheduling regulations,
REC mechanism, Grant of connectivity, sharing of transmission line for Wind solar hybrid system is needed.
In case, lower tariff gen. is mixed with higher tariff gen. in order to get higher tariff, the entire quantum of gen. shall be
considered towards lower tariff generation.
Tariff allocation needs to be determined for hybrid projects.
No provision of exporting excess power more than the contracted/ granted transmission capacity.
Forecasting & scheduling procedures needs to be incorporated to understands the demand pattern.
No clarification on the cost of excess energy exported to the grid.
No clarification for selecting technologies under hybrid scheme.
Policy does not speaks about clearances to be kept between (horizontally and vertically)solar and wind plants .
Major challenges of harnessing the battery power for reducing variability of output power.

7. SINGLE AXIS TRACKER- TYPE & TECHNOLOGIES
AC-AC & DC-DC Coupled Systems
Gensol Group
DC Coupled
Systems AC Coupled
Systems
Inverter
DC-DC
Need of
Hybridization
For fulfilling
demand-supply
gap;
To provide
uninterrupted
power supply;
For increasing
clean energy
footprints;
System can be
designed for
both microgrid
and grid-
connected
projects;
Solar Wind are
complimentary
Low cost of
transmission
infrastructure

8. SINGLE AXIS TRACKER- TYPE & TECHNOLOGIES
Case Study (A) – Wind Solar Hybrid
Gensol Group
Variability is lower for a mix of wind and solar power rather than all-solar or all-wind at a given location because
both resources do not move in lock step & most of the time they are complementary.
Connecting more MW of Solar in a wind farm were studied for a site of about
300MW wind farm.
•An addition of about 150MW (50% of existing wind installed capacity) Solar
has hardly caused any overloading of the power infrastructure suitable for
300MW wind, with negligible number of occasions for backing down of
generation.
•An addition of 225MW (75% of existing wind installed capacity) would cause
backing down of generation to avoid stress on the Power Infrastructure at the
Substation for a short time in a year
•An addition of 300MW (100% of existing wind installed capacity) would cause
backing down of more generation to avoid stress on the Power Infrastructure at
the SS for a short time in a year.
• It can be seen that backing down is not substantial in all the cases and would
vary from site to site.
Months
Probable loss of energy
due to backing down,
case 1, wind : solar =
1:0.5 (MWH)
Probable loss of energy
due to backing down,
case 2, wind : solar =
1:0.75 (MWH)
Probable loss of energy
due to backing down,
case 1, wind : solar = 1:1
(MWH)
Jan 0 0 0
Feb 2 111 664
Mar 8 127 965
Apr 69 536 2127
May 0 0 0
Jun 0 0 8
Jul 0 66 395
Aug 0 0 144
Sep 23 58 94
Oct 0 29 495
Nov 0 56 297
Dec 26 494 3163
Total 128 1477 8352
Loss (%) 0.04% 0.33% 1.89%
As wind and solar generation are complementary to each other, these can utilize the common infrastructure viz. Substation
and the lines to the fullest extent, without exceeding the technical limits.
As wind and solar generation are complementary to each other, these can utilize the common infrastructure viz. Substation
and the lines to the fullest extent, without exceeding the technical limits.

9. SINGLE AXIS TRACKER- TYPE & TECHNOLOGIES
Case Study (B)
Gensol Group
About the Project
Location – Jamgoda Hills, Madhya Pradesh
The Proposed Solar Wind Hybrid project, located in India is a 22.5 MW plant divided in
two division, the SPP of 12 MW and Wind Power Plant of 10.5 MW.
DC Capacity
16.5 MWp
AC Capacity
12 MW
Annual Specific Yield
1673 kWh/kWp/Year
Annual Energy Yield
27597 MWh
SPP Details
Performance Ratio (PR)
79.06%
AC Capacity
10.5 MW
Annual Wind Speed
Annual Energy Yield
32879 MWh
WPP Details
Plant Load Factor (PLF)
35.74%
AC Capacity
22.5 MW
Annual Energy Yield
60,529 MWh
S+W PP Details
Plant Load Factor (PLF)
30.71%
Location – India
AC Load

10. SINGLE AXIS TRACKER- TYPE & TECHNOLOGIES
AC-AC & DC-DC Coupled Systems- Cost Savings
Gensol Group
In Case study B, from the cost analysis, it has been evaluated that there will be huge savings in cost evacuation system, cable installation
and switchgears. Although, it should be noted that in DC coupled systems, DC cabling increases leading to generation loss in cabling loss as
converters are located at top in wind turbine
DC Coupled Systems Quantity Cost in Lacs
Delta in cost due to DC Coupling (Assuming 10 km turbine)
1) Solar 12 MW
DC SMB to Inv. +260.00 lacs
Hybrid
2) Solar Inverter -228.00 Lacs
3) Switchgears -25.25 lacs
4) Transformers -78.00 lacs
5) Cables -20.00 lacs
6) Services -10.00 lacs
Total Savings 91+10 lacs= 101 lacs
AC Coupled Systems Capacity Cost in Lacs
Non Hybrid (Assuming 10 km turbine)
1) Wind 10.5 MW 10 lacs X 10 km= 100 lacs
2) Solar 12 MW 10 lacs X 10 km= 100 lacs
A) Total 200 lacs
Hybrid
B) Wind+Solar 22.5 MW 10 lacs X 10 km = 100 lacs
Savings A-B 100 lacs
Services 10 lacs
Total Savings 110 lacs (Plus GSS feeder cost)
In DC coupled system apart from evacuation cost, AC
switchgears, cables installation is reduced which leads to
cost saving in range of 20-25%.
In AC Coupled systems, savings in evacuation infrastructure, which
is generally tends to be close to 10-15% of the cost which is a
saving. Reason for range is due to evacuation voltage levels at
which system is designed.

11. SINGLE AXIS TRACKER- TYPE & TECHNOLOGIES
Site Details -Plant Layout & Shadow Analysis
Gensol Group
Independent metering for both SPP And
WPP at the pooling SS
Strategic location for installation of BESS
will be determined
Feasibility of nearest Substation.
Capacity estimation for solar power plant
Identification of land for solar power plant
Analysis of shadow free area in Wind
Power Plant site.
Selection of Wind Solar Hybrid Project

12. SINGLE AXIS TRACKER- TYPE & TECHNOLOGIES
Site Details -Plant Layout & Shadow Analysis
Total Energy Generation (Hybrid)-60,529 MWh CUF -30.71%
Total proposed Solar capacity is of 16.5 MWp.
2.87 MWp solar capacity is removed due to shadow impact.
Shadow analysis is carried out, only turbine “J5” is south facing
which Impact the solar generation.
Total 5 Nos. of Wind turbine of 2.1MW Suzlon make is to be laid
over the site.
Total area acquired for the 22.5 MW capacity Solar Wind Hybrid
Power Plant is 77.8 Acres.
Gensol Group

13. SINGLE AXIS TRACKER- TYPE & TECHNOLOGIES
Site Shadow Analysis
Gensol Group
Time: 8:20:00 am Time: 9:00:00 am

14. SINGLE AXIS TRACKER- TYPE & TECHNOLOGIES
Site Shadow Analysis
Gensol Group
Time: 11:00:00 am Time: 4:00:00 pm

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16. Gensol is one of the leading consultants and system integrators for Solar Power Plants. We boast of a portfolio of over 6000 MW of Solar Photovoltaic Plants. Gensol is also a channel
partner to Ministry of New & Renewable Energy and installs kW scale Solar Rooftop systems on a turnkey basis with more than 42 MW of cumulative installations across the country.
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