The document discusses offshore energy development in Gujarat, India. It provides an overview of Abhay Ocean, a marine construction company promoting offshore renewable energy. It then covers topics like offshore wind farm logistics, the advantages of offshore wind, global and Indian status of offshore wind farms, wind resource assessment techniques used in India, economics of offshore wind farms, and the potential and challenges for offshore wind development in India.

1. Offshore Energy DevelopmentOffshore Energy DevelopmentOffshore Energy DevelopmentOffshore Energy Development
In GUJARATIn GUJARATIn GUJARATIn GUJARAT
A green initiativeA green initiativeA green initiativeA green initiative
8/1/2015 1

2. About Abhay Ocean
Marine/Marine/Marine/Marine/ OffshoreOffshoreOffshoreOffshore ConstructionConstructionConstructionConstruction
providerproviderproviderprovider....
Promoted by CaptainCaptainCaptainCaptain JagdishJagdishJagdishJagdish
Khokhar,Khokhar,Khokhar,Khokhar, ExExExEx.... NavalNavalNavalNaval OfficerOfficerOfficerOfficer....
ExperienceExperienceExperienceExperience ofofofof overoveroverover 30303030 yearsyearsyearsyears in
managing & executing wide variety
of offshoreoffshoreoffshoreoffshore projectsprojectsprojectsprojects.of offshoreoffshoreoffshoreoffshore projectsprojectsprojectsprojects.
With our highhighhighhigh degreedegreedegreedegree ofofofof flexibilityflexibilityflexibilityflexibility
basedbasedbasedbased onononon multimultimultimulti skillingskillingskillingskilling industryindustryindustryindustry
knowledgeknowledgeknowledgeknowledge andandandand experience,experience,experience,experience, withwithwithwith
costcostcostcost efficiencyefficiencyefficiencyefficiency awarenessawarenessawarenessawareness....
AOILAOILAOILAOIL personnelpersonnelpersonnelpersonnel andandandand servicesservicesservicesservices areareareare
highlyhighlyhighlyhighly awareness,awareness,awareness,awareness, AOILAOILAOILAOIL personnelpersonnelpersonnelpersonnel
andandandand servicesservicesservicesservices areareareare highlyhighlyhighlyhighly regardedregardedregardedregarded
throughoutthroughoutthroughoutthroughout thethethethe OilOilOilOil &&&& GasGasGasGas industryindustryindustryindustry....
8/1/2015 2

3. Abhay –Ocean Power objectives
Focus on building/creating
infrastructure for developmentdevelopmentdevelopmentdevelopment
ofofofof OffshoreOffshoreOffshoreOffshore RenewableRenewableRenewableRenewable inininin IndiaIndiaIndiaIndia....
Study,Study,Study,Study, conductconductconductconduct SurveysSurveysSurveysSurveys forforforfor futurefuturefuturefuture
sitessitessitessites for offshore renewable.
ProvideProvideProvideProvide skilledskilledskilledskilled manpowermanpowermanpowermanpower andandandand
expertexpertexpertexpert knowledgeknowledgeknowledgeknowledge basebasebasebase....expertexpertexpertexpert knowledgeknowledgeknowledgeknowledge basebasebasebase....
To become pioneerspioneerspioneerspioneers inininin developmentdevelopmentdevelopmentdevelopment
ofofofof oceanoceanoceanocean energyenergyenergyenergy inininin IndiaIndiaIndiaIndia....
To play importantimportantimportantimportant rolerolerolerole inininin India’sIndia’sIndia’sIndia’s
energyenergyenergyenergy independenceindependenceindependenceindependence .
To developdevelopdevelopdevelop technologytechnologytechnologytechnology totototo reducereducereducereduce
carboncarboncarboncarbon emissionemissionemissionemission---- Save world from
Global warming.
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4. Over viewOver viewOver viewOver view
About 54545454 %%%% of
Electric power in India
is currently generated
from Coal/LigniteCoal/LigniteCoal/LigniteCoal/Lignite
based thermal power
plant.
Contribute to GreenGreenGreenGreen
househousehousehouse gasesgasesgasesgases emissionsemissionsemissionsemissions....
IncreaseIncreaseIncreaseIncrease inininin EnergyEnergyEnergyEnergy
demanddemanddemanddemand 8888 %%%%....
CapacityCapacityCapacityCapacity additionadditionadditionaddition of
about 12121212,,,,000000000000 MWMWMWMW is
requiredrequiredrequiredrequired for next 10
years.
ChallengeChallengeChallengeChallenge is to meetmeetmeetmeet
energy demanddemanddemanddemand in
sustainablesustainablesustainablesustainable manner.
The needneedneedneed of hour is
cleancleancleanclean resource of
Energy, in which marinemarinemarinemarine
renewablerenewablerenewablerenewable powerpowerpowerpower cancancancan
playplayplayplay aaaa majormajormajormajor rolerolerolerole....
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5. Typical Working : Offshore Wind farm
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6. Contents
1. Introduction
a) Offshore Wind Energy
b) Tidal Current Turbine
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7. 8/1/2015 7

8. 8/1/2015 8

9. ADVANTAGES OF OFFSHORE WIND
Higher wind speed than onshore
locations : More than 20 %.
Larger area available for setting up
bigger Wind farms.
More consistent wind speeds.
Lower turbulence intensities hence
lower mechanical fatigue, longer life timelower mechanical fatigue, longer life time
for turbines.
Close to load center, Located near
cities hence minimum transmission losses.
Short gestation period: Mega/ Ultra
mega size thermal/hydro may have
gestation period of 3-6 years where as
Offshore wind project have gestation
period of 1-2 years.
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10. Typical Working : Offshore Wind farm
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11. Global status of Offshore wind farm
15 GW installed at end of 2013; 135
GW by 2030.
Increase of 31% from 2011.
Average turbine size 4-5 MW, New
turbines of 9 MW are available.
Average wind farm size 271 MW.
Reduce offshore cost to 10c/kwh by
2015.8/1/2015
11

12. LIST OF OFFSHORE OPERATIONALLIST OF OFFSHORE OPERATIONALLIST OF OFFSHORE OPERATIONALLIST OF OFFSHORE OPERATIONAL
WIND FARMSWIND FARMSWIND FARMSWIND FARMS
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13. LIST OF OFFSHORE OPERATIONALLIST OF OFFSHORE OPERATIONALLIST OF OFFSHORE OPERATIONALLIST OF OFFSHORE OPERATIONAL
WIND FARMSWIND FARMSWIND FARMSWIND FARMS
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Note: In China, Belgium more than 1 GW
offshore energy parks are under
construction . Up to 2013 All over the
World more than 15 GW of proposed .

14. LIST OF Biggest wind turbinesLIST OF Biggest wind turbinesLIST OF Biggest wind turbinesLIST OF Biggest wind turbines
1. Vestas V164 8 MW
Most innovative
design with 80 m
blades and light
weight nacelle.
2. Enercon E126
7.5 MW
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7.5 MW
3. Samsung S7.0 S171
7 MW latest entry
to offshore market.
Currently under
test in Scottish
waters.

15. LIST OF Biggest wind turbinesLIST OF Biggest wind turbinesLIST OF Biggest wind turbinesLIST OF Biggest wind turbines
5. Siemens SWT-6.0
150 the successful
offshore wind
turbine. Signed 1.8
4. RE Power 6 M
series currently
the popular wind
turbine found in
open sea. 85-95 m
Rotor blade
length.
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turbine. Signed 1.8
GW contract with
dong energy.
6. Sinovel SL600
Currently being
tested in china.
64 m rotor
blade. Company
claims of
designing 10 MW
turbine

16. LIST OF Biggest wind turbinesLIST OF Biggest wind turbinesLIST OF Biggest wind turbinesLIST OF Biggest wind turbines
7. Alstom Haliade 6 MW
73 m Rotor blade will
be Installed in belgium
waters.
8. Areva M5000 113 m
rotor blade Installed in
Alpha ventus project in
German north sea.
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9. Bard 5 MW 122 rotor
blade Installed in island
of Borkum in north sea.
10. XEMC 5 MW 115
rotor blade. Chinese
manufacturer. To be
installed in project
Swedish off coast.

17. Indian Power sector at a glance
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18. Over viewOver viewOver viewOver view
About 54 % of Electric
power in India is currently
generated from
Coal/Lignite based
thermal power plant.
Contribute to Green
house gases emissions.
Increase in Energy
demand 8 %.
Capacity addition of
about 120,000 MW is
required for next 10
years.
Challenge is to meet
energy demand in
sustainable manner.
The need of hour is
clean resource of Energy,
in which offshore wind
can play a major role.
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19. India : A potential hub of offshore
wind farms
India is blessed with 7600 km coastline.
Possess rights over a Exclusive
Economic Zone(EEZ) covering area of 2
million sq. meter.
As per initial surveys conductedAs per initial surveys conducted
estimated potential of few thousands of
MW; Along the cost line of
Rameshwaram & Kanyakumari in Tamil
nadu.
Also coastlines Gujarat, Kerala and
Maharashtra indicated moderate
offshore wind energy potential.
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20. Offshore wind farm-
Drivers/Accelerators
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21. National Offshore Wind energy
policy-2013
Draft of National Offshore Wind
Energy Policy 2013 provides formulation
for consenting(CAB= Consenting Apex
Body)
Wind resource assessment, Project
development & Power production.development & Power production.
Wind Energy measurement licenses &
EIA Survey lease.
Environmental protection measures &
EIA.
Taxes, Royalties, Rentals & Duties.
Power evacuation.
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22. Venturing offshore- Extensive long
term planning
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23. Offshore Wind Resource assessment
Wind Resource Assessment (WRA) is the
collection of technologies and analytical
methods that are used to estimate how much
wind will be available for Wind power plant for
entire course of its useful life.
Determines amount of energy the Plant will
produce.
Sources of WRA:
The key requirement is to reduceThe key requirement is to reduce
uncertainty in estimation to in
crease
Bankability of the project.
Following are tools used in WRA:
1. Met Mast:
Consist of Anemometer and
wind
vane at desired hub height.
Most reliable onsite wind
measurement.
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24. Offshore Wind Resource assessment
2. Light Detection & Ranging (LiDER):
Operates by emitting a laser signal, either as
pulses or as continuous wave, Which is partially
scattered back in the direction of emitter by
suspended aerosol particles.
The light reflected back is shifted in frequency,
which used to derive wind speed.
LiDERS are available in two types for offshoreLiDERS are available in two types for offshore
purposes
I) Floating Type Platform:
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25. Offshore Wind Resource assessment
II) Fixed Type Platform:
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26. Offshore Wind Resource assessment
III) Satellite Data : Additional tool
available to get wind data is Satellite
data.
QuikSCAT, MERRA, METEOSAT etc. These
data are usually 10-50m height and need
to be scaled up to turbine height. The
quality of data depend upon satellite
coverage and length of duration for which
satellite is deployed. It can also providesatellite is deployed. It can also provide
spatial variation and long term data.
IV) Mesoscale Data : Wind Resource
Grids(WRGs) are prepared by using
number of mesoscale and microscale
models along with weather data
produced by US
National Center for environmental
projection (NCEP) And National Centre for
Atmospheric research (NCAR) . MERRA
Reanalysis Data.
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27. Coastal line measurement in india at
50 m a.g.l.
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28. Mean simulated wind speed at 80 m
a.g.l.
The contour interval is 2 m/s.
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29. Mean simulated wind speed at 80 m
a.g.l.
The contour interval is 100 w/m^2.
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30. Mean simulated wind speed at 50 m
a.g.l.
The contour interval is 100 w/m^2.
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31. Mean simulated wind speed at 50 m
a.g.l.
The contour interval is 100 w/m^2.
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32. Mean simulated wind speed at 80 m
a.g.l.
The contour interval is 100 w/m^2.
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33. offshore wind Turbine installationoffshore wind Turbine installationoffshore wind Turbine installationoffshore wind Turbine installation
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34. Overview : offshore wind farm supply
chain
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35. I) Data Availability and Convergence :
Studies have several gaps and remain
inconclusive.
Most databases provide spatial
variation, temporal variation is not
available.
II) Uncertainty :
Challenges to offshore potential
assessment in india
II) Uncertainty :
Accounting for sea surface roughness
and atmospheric stability is challenge.
III) Mapping of Marine resources:
Mapping of fishing/shipping channels
and marine mammal movements need
to be done determine development
restrictions.
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36. Offshore Wind farm Economics
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37. Offshore Wind farm Economics
Cost of Wind Energy
Source: Economics of Wind energy, EWEA 20098/1/2015 37

38. Offshore Wind farm Economics
Balance-of-station cost drivers and
Sensitivities
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39. Offshore Wind farm Economics
Balance-of-station cost drivers and
Sensitivities
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40. Offshore Wind farm Economics
Balance-of-station cost drivers and
Sensitivities
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41. Offshore Wind farm Economics
Balance-of-station cost drivers and
Sensitivities
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42. 8/1/2015 42
Source: Offshore wind Potential of Gujarat by PDPU

43. 8/1/2015 43
Source: Offshore wind Potential of Gujarat by PDPU

44. 8/1/2015 44
Source: Offshore wind Potential of Gujarat by PDPU

45. 8/1/2015 45
Source: Offshore wind Potential of Gujarat by PDPU

46. 8/1/2015 46
Source: Offshore wind Potential of Gujarat by PDPU

47. 8/1/2015 47
Source: Offshore wind Potential of Gujarat by PDPU

48. 8/1/2015 48
Source: Offshore wind Potential of Gujarat by PDPU

49. 8/1/2015 49
Source: Offshore wind Potential of Gujarat by PDPU

50. 8/1/2015 50
Source: Offshore wind Potential of Gujarat by PDPU

51. 8/1/2015 51
Source: Offshore wind Potential of Gujarat by PDPU

52. 8/1/2015 52
Source: Offshore wind Potential of Gujarat by PDPU

53. 8/1/2015 53
Source: Offshore wind Potential of Gujarat by PDPU

54. Conclusion: Offshore Wind in India
Huge potential of offshore wind in
India.
Wind Data is available from different
sources but need to be validated.; by
installing Mast & LiDER’S @ potential
offshore locations.
The variability of all-in cost of wind
energy is still major barrier for developingenergy is still major barrier for developing
Offshore wind farm.
Total Balance-of–cost are reduced
with larger projects size.
Total Balance-of-cost are reduced
with larger Turbine size.
Water depth shows no Impact on
Electrical cost. However it impact
support structure cost.
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