Utility Scale PV Plant Optimization. Forrest Collins juwi solar Inc. November 30th, 2010

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Ashlyn Fletcher
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1 Utility Scale PV Plant Optimization Forrest Collins juwi solar Inc. November 30th, 2010

2 Overview Background on juwi Organization PV Plant Optimization Cast Study I: Jacksonville Solar PV Plant Optimization Case Study II: Blue Wing Solar 2

3 juwi Organization Based in: juwi Holding AG (parent of juwi solar GmbH) Wörrstadt, Germany 2009 Revenue $900 million Founded/CEOs: Employees: >1000 Private company founded in 1996 by Fred Jung ( ju ) and Matthias Willenbacher ( wi ) Business Units: Wind (>600 MW) Solar Photovoltaic (>500MW) Biogas (2MW) Based in: Founded: 2000 Services: Employees: >500 juwi solar GmbH Wörrstadt, Germany Geothermal Energy Efficiency Electric Mobility PV System Development, EPC, Financing, and O&M 3

4 juwi solar International Strong international presence with subsidiaries in 11 countries and more than 500 MW of PV installed worldwide juwi solar GmbH Wörrstadt, Germany Poland North America UK France Czech Republic Bulgaria Spain Italy Greece India 4

5 Utility-Scale Project Experience Project Capacity Years in Operation Location Lieberose Solar Park 53.0 MW 1 year Brandenburg, Germany Waldpolenz Solar Park 40.0 MW 2 years Saxony, Germany Blue Wing Solar 16.0 MW 1 month Texas, USA Jacksonville Solar 15.0 MW 2 months Florida, USA Kothen Solar Park 14.8 MW 3 years Saxony, Germany Wyandot Solar 12.0 MW 6 months Ohio, USA Schwaben Solar Park 12.0 MW 4 years Bavaria, Germany Tutow Solar Park 6.8 MW 1.5 Years West Pomerania, Germany Rote Jahne Solar Park 6.0 MW 5 years Saxony, Germany Mars Solar 2.2 MW 1.25 years New Jersey, USA 5

6 juwi solar Inc. juwi solar Inc., based in Boulder, Colorado and majority-owned by juwi Holding AG, serves the North American utility solar market. Project Development & Acquisition Turn Key Installation (Engineering, Procurement & Construction) Strategic Partnerships juwi solar Inc. Core Competencies Off-take/Sale Agreements Equity & Debt Financing Commercial Operations & Maintenance Equipment Supply Modules Inverters Racking Transformers/Switchgear Wiring/Electrical Target Customers/Off-takers Investor-Owned Utilities Municipalities Cooperatives Industrials/Commercial 6

Constructed, and Operates Three of the Top Ten Largest PV

Wyandot Solar AEP Ohio 12MW DC Free field project Project

Solar JEA Florida Blue-Wing Solar CPS Energy Texas 16MW DC

7 juwi solar Inc. A Leader in Utility Scale Solar JSI has Developed, Financed, Constructed, and Operates Three of the Top Ten Largest PV Projects in Operation in the U.S. Wyandot Solar AEP Ohio 12MW DC Free field project Project between JSI, AEP and PSEG Completed May 2010 Jacksonville Solar JEA Florida Blue-Wing Solar CPS Energy Texas 16MW DC Free field project Project between JSI, CPS and DEGS Completed Nov MW DC Free field project Project between JSI, JEA and PSEG Completed Sep

8 Case Study I: Jacksonville Solar Jacksonville Solar Location: 17 miles west of Jacksonville, FL Latitude: 30.3 o north 8

9 Case Study I: Plant Layout Site Overview Flat, previously grazed land Total Acreage: 91 Acres Non-square shape Wetlands Site Boundary Wetlands 9

Case Study I: Plant Design Challenges Avoid wetlands

permitting time and risk Cannot remove wetland trees

Non-standard building block MW-In-A-Box would not

10 Case Study I: Plant Design Challenges Avoid wetlands Using the wetlands would introduce additional permitting time and risk Cannot remove wetland trees Need to avoid shading from wetlands trees Non-standard building block MW-In-A-Box would not work Standardize as much as possible Maximize system size and generation 10

11 Case Study I Plant Summary Jacksonville Solar Plant Summary 15.0 MW DC 200,000 First Solar modules First 1000 VDC System in Florida Non-standard building block Fixed arrays with a 20 degree tilt Due south orientation 8 feet row to row spacing Avoided wetlands and minimized shading 11

12 Case Study II: Blue Wing Solar Blue Wing Solar Location: San Antonio, TX Latitude: 31.1 o north 12

13 Case Study II: Plant Layout Site Overview Undulating land, previously farmed Total Acreage: 115 Acres Non-square shape Plot oriented 25 west of south Low swell with existing trees Wetlands Site Boundary 13

14 Case Study II: Plant Design Challenges Site oriented 25 degrees west of south Difficult to optimize capacity and layout at due south Standard design practices suggest orienting west of south will reduce generation 14

15 Percent of Due South Generation Case Study II: Plant Design Challenges 4.9% more global horizontal irradiance after solar noon compared to before solar noon. Clouds/haze typical before noon but burns off by noon in San Antonio Optimal orientation for San Antonio is 10 degrees west of south Orienting the arrays 25 degrees west of south results in only a 0.4% reduction in generation compared to due south (~2.0% is typical) 101.0% 100.5% 100.0% 99.5% 99.0% 98.5% 98.0% Percent Decrease in Generation as a Function of Azimuth San Antonio Typical Azimuth Angle (degrees west of south) 15

16 Case Study II: Plant Summary Blue Wing Solar Plant Summary 16.1 MW DC 215,000 First Solar modules First 1000 VDC System in Texas Used 2 standard building blocks Fixed arrays with a 20 degree tilt 25 degree west of south azimuth 8.5 feet row to row spacing 16

17 Summary For many sites a standard MW-In-A-Box design is not the optimal solution The optimal solution may be a combination of standard and non-standard building blocks Best practices should include optimizing site layouts to accommodate existing site conditions and constraints It is often necessary to perform detailed parametric analysis to optimize land use and generation while reducing balance of system costs 17

Field Performance of. Forrest Collins juwi solar Inc. February 2 nd, 2010

Field Performance of. Forrest Collins juwi solar Inc. February 2 nd, 2010 Field Performance of Thin-Film Forrest Collins juwi solar Inc. PHOTON 2nd Thin Film Conference February 2 nd, 2010 Overview Background on juwi Organization juwi Exprience with Thin-Film Data from the Field