Performance of Wind Projects Versus Pre-Construction Estimate - India

Apoorv Vishnoi

Apoorv.vishnoi@vaisala.com

Energy Sales Manager, India

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Vaisala Overview Vaisala is a weather company started by Finnish

Professor Vilho Väisälä in the 1930s

1500+ employees, 30 offices worldwide

Primary business areas

Weather (includes Energy)

Controlled Environments

Vaisala Energy services

Measurement systems (incl.. Triton, global lightning data)

Information services (incl.. Forecasting, Assessment)

Over 250 wind due diligence assessments

Over 50 solar due diligence assessments

2

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Risks

1. External Factors

2. Ongoing learning

3. Annual variability

4. Portfolio

5. Future wind turbines

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Wind Farm Year Energy Deviations - India

09/06/2016 4

0

5

10

15

20

25

30

35

0 2 4 6 8 10

Ne

t C

ap

acity F

acto

r (%

)

Projects

Pre-constructionestimate by thirdparties

Vaisala's postoperationreassessment

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Wind Farm Year Energy Deviations- Vaisala

09/06/2016 5

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Wind Farm Year Energy Deviations- US & others

09/06/2016 6

σ = 8.8% σ = 10.6%

μ = +0.1%

95% conf int (n=115) 95% conf int (n=24)

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NNRP-D ERA MERRA

Wind Speed from

April 2015 to March 2016

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Risks Review

1. External Factors

2. Ongoing learning

3. Annual variability

4. Portfolio

5. Future wind turbines