1CONFIDENTIAL | New Directions in Wind Energy October 16, 2013 Maryland Clean Energy Summit – Hyattsville, MD

2CONFIDENTIAL |  Developer/manufacturer of high-efficiency midscale shrouded wind turbine  Core expertise in wind turbine design, engineering, development and the production and manufacturing of complex engineered products  Founded in 2007; ≈105 employees globally as of 10/1/13  Headquartered in Waltham, MA with units in California, Denmark, Asia  Robust financial backing from leading financiers including: –Kleiner Perkins Caufield & Byers –Vantage Point Venture Partners –Technology Partners –Goldman Sachs –Several Strategic Investors FloDesign Wind Turbine (FDWT): Corporate Profile  World-class management team  Wholly-owned development subsidiary, New Dimension Energy Co. (NDEC) est. 2011

3CONFIDENTIAL | Mixer Lobes Ejector Shroud Fast Air Deflected In Air Flowing Through Rotor: Slows as Energy Is Extracted Mixer Shroud Ejector Shroud Fast air deflected in Mixing vortex of slow and fast air pumps more flow through rotor Up to 3x more energy captured per unit of swept area FDWT’s Shrouded Turbine Technology: How It Works

4CONFIDENTIAL | Performance and Siting Advantages Conventional TurbinesFloDesign Turbines Conventional Turbines Cost/Performance:  ≥50% increase in capacity factor  ≈50% lower lifetime O&M costs  Less turbulent = closer spacing = smaller overall project land footprint  Continuing access to 30% federal ITC Siting and Environmental:  Quiet operation  Visible to wildlife  Much lower hub height (< FAA 200’ limit)  Modular – simpler delivery logistics The Benefits And Lower LCOE

5CONFIDENTIAL | Repowering of aging legacy California wind turbine fields Wholesale Distributed Wind (WDW) – organic, medium-voltage “infill” projects that do not require major grid upgrades Siting-sensitive areas where conventional turbines face hurdles Retail self-generation: a very large future market opportunity Targeted Applications

6CONFIDENTIAL |  First sub-scale in-field demonstrator completed at Rutland MA, May 2009  First commercial-scale proof-of-concept technology demonstrator completed at MWRA Deer Island (Boston Harbor), MA, May 2011  First full prototype turbine completed at Rosamond, CA, Sept 2012  Manufacturing/sub-assembly facility (Adelanto, CA) leased, March 2012  First commercial prototype turbine slated for deployment in southern CA, 4Q 2013 Multiple deployment sites in California already under development Commercialization Landmarks

7CONFIDENTIAL | Wind Energy and Tomorrow’s Distributed, Clean Grid  80% CO 2 reduction by 2050 will require decades of rapid RE development  There’s no “magic bullet” / single solution – a highly reliable, renewables- based grid will require diverse technologies at well-distributed locations!  Wind, solar are complements not competitors, both diurnally and seasonally. Both are needed – and the more we add one of one, the more we can add of the other – taking RE from a niche role to the “tipping point” and beyond  But conventional wind energy approaches (e.g., ever-larger turbine rotors) are hitting limits of logistics, transmission capacity, siting and public acceptance  FDWT’s high performance, low profile and cost-competitive economics offer a new solution – enabling RE development much closer to customer load and maximizing wind energy’s contribution to the clean energy future we need!

8CONFIDENTIAL | Thank You Thank You!