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					   STAR Blade
Program Overview
Program Overview
 Goal was to improve annual energy revenues by
  5-10% at commercial wind sites, while increasing
  total system cost by 2% or less.
 STAR 54 meter rotor operates within the design
  load envelope of the baseline 48 meter rotor.
 Blade tip-to-tower clearance is maintained.
 The design techniques used for the STAR 54
  have been confirmed by field testing.


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Milestones
 2005 - Design
  STAR analysis & design
 2006 - Fab Tooling
 2007 - Fab Prototypes
  Static test blade & test
  Fatigue test blade
  Field test rotor set
 2008 - Testing
  Fatigue test
  Operational test
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STAR 54 Power Curve
 STAR 54
  improves the
  power curve in
  wind speeds
  below rated.
 Actual data from
  field operation
  shows significant
  improvements.


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Improved Energy Capture
 The STAR rotor
  provides large
  increases in
  revenue as
  compared to the
  standard rotor.      STAR 54 field experience in
 IEC Class II site    Tehachapi shows a 10% increase
  should have a        in energy capture as compared
  9.4% increase.       to other Z48 turbines at the site.

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More Energy Without Higher Loads
 A large set of
  operating loads
  was collected in
  April and May.
 Maximum operating
  loads were within
  design values
  under all wind
  conditions.

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STAR Ranked Among the
“Top Ten” DOE Programs




                         7
Field Test Conclusions
 Predictions for STAR performance and loads have
  been verified by lab and field testing.
 Design tools and techniques were successful in
  achieving performance goals.
 STAR technology is widely applicable and
  represents a major evolution in blade design.
 Protect the intellectual property developed during
  the STAR blade program.
 Proceed to commercialize the STAR technology
  through manufacturing and licensing.
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  Investment Potential
 Wind turbine component supply chain is growing rapidly.
 There is investment potential in a range of areas.
 U.S. rotor blade production: US$23-$27 billion by 2020.




Source: Emerging Energy Research, 2008
                                                            9
Vendor Investments
 Wind turbine vendors are building manufacturing
   capacity in the U.S. and need domestic partners.




Source: Emerging Energy Research, 2008                10
Supply Chain
 U.S wind turbine manufacturing capacity is
   expanding, with operations in many states.




Source: Emerging Energy Research, 2008          11
Commercialization Overview
 Establish intellectual property rights for key
  aspects of STAR technology.
 Develop wind turbine supply chain partnerships in
  a range of blade sizes.
 Implement licensing and joint venture strategies
  for STAR technology.
 Use STAR technology as leverage to expand
  Knight & Carver strengths in field support and
  blade repair.
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