HomeMy WebLinkAboutTURBINE SUITABILITY LETTER - GE Site Suitability Letter - Shovel Creek
GE Renewables
Parker Powell
Wind Technical Leader - Americas
1 River Road 53-4th Floor Schenectady, NY 12345-6000
M 518-867-6298
parker.powell@ge.com
April 29, 2021
Matthew Perkins
CEO Alaska Renewables LLC
Executive Summary of GE’s wind turbine suitability for the Murphy Dome project in Alaska
Dear Matthew:
This letter is to confirm that General Electric (GE) has performed an initial analysis to determine the suitability of the
3.0-140 wind turbine with a 98-meter hub height for the Murphy Dome project located in Alaska. The wind data outlined in the table
below was evaluated in this analysis, taking into consideration both fatigue and extreme loads. The results indicate that the subject
wind turbine configuration is likely suitable, though the need for some type of loads mitigation strategy and reinforced tower cannot
be completely ruled-out without completion of a full Mechanical Loads Assessment (MLA) based on a more comprehensive study of
the onsite wind conditions.
This conclusion is based upon the wind data considered in the analysis and is contingent upon the accuracy of the wind data. Any
change to the wind data must be reviewed by GE to determine if there is a change in turbine suitability and a complete Mechanical
Loads Analysis (MLA) must be completed once a final layout and wind data has been provided for all turbine locations.
Average Wind
Speed, Vavg (m/s)
Representative
Turbulence Intensity @
15 m/s (%)
50-Year 3-
second Gust
(m/s)
Average Air
Density
(kg/m3)
Wind
Shear
Exponent
Weibull
k Factor
Upflow
angle
(deg)
7.1 12.2% 51 1.227 0.23 2 8
This analysis is provided for reference only to compare predicted site loads based on the wind data above, with the predicted design
loads envelope of the wind turbine of interest. This analysis should not be interpreted as a warranty or guarantees of performance.
Sincerely,
Parker Powell
cc: Chris Galland – Sr Sales Manager – GE Renewable Energy
Oswaldo Rodriguez, Wind Application Engineering Team Leader, GE Renewables Engineering