Forrest Collins Juwi Solar

8/3/2019 Forrest Collins Juwi Solar

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Utility Scale PV

Plant Optimization

Forrest Collins

juwi solar Inc.

November 30th, 2010


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2November 30th 2010 Utility Scale PV Yield Optimization Conference and Expo US

Overview

Background on juwi Organization

PV Plant Optimization Cast Study I:Jacksonville Solar

PV Plant Optimization Case Study II:Blue Wing Solar


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juwi Organization

juwi Holding AG (parent of juwi solar GmbH)

Based in: Wrrstadt, Germany

2009 Revenue $900 million

Founded/CEOs: Private company founded in 1996 by Fred Jung (ju) and MatthiasWillenbacher (wi)

Employees: >1000

Business Units: Wind (>600 MW) Solar Photovoltaic (>500MW) Biogas (2MW)

juwi solar GmbH

Based in: Wrrstadt, Germany

Founded: 2000

Services: PV System Development, EPC, Financing, and O&M

Employees: >500

Geothermal Energy Efficiency Electric Mobility


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North America

Spain

France

Italy Greece

juwi solar GmbH

Wrrstadt, Germany

Czech Republic

juwi solar International

Poland

India

UK

Bulgaria

Strong international presence with subsidiaries in 11 countries and

more than 500 MW of PV installed worldwide


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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 YearsWest Pomerania,

Germany

Rote Jahne Solar Park 6.0 MW 5 years Saxony, Germany

Mars Solar 2.2 MW 1.25 years New Jersey, USA


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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

Off-take/Sale Agreements

Equity & Debt Financing

Commercial Operations & Maintenance

juwi solar Inc.

Core Competencies

Investor-Owned Utilities Municipalities Cooperatives Industrials/Commercial

Target

Customers/Off-takers

Modules Inverters

Racking Transformers/Switchgear Wiring/Electrical

Equipment Supply


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Blue-Wing Solar

CPS EnergyTexas

16MW DC Free field project Project between JSI,

CPS and DEGS Completed Nov 2010

juwi solar Inc.A Leader in Utility Scale Solar

Jacksonville Solar

JEAFlorida

15MW DC Free field project Project between JSI,

JEA and PSEG Completed Sep 2010

Wyandot Solar

AEPOhio

12MW DC Free field project

Project between JSI,AEP and PSEG Completed May 2010

JSI has Developed, Financed, Constructed, and Operates Three of the Top Ten

Largest PV Projects in Operation in the U.S.


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Case Study I: Jacksonville Solar

Jacksonville SolarLocation: 17 miles west of Jacksonville, FL

Latitude: 30.3o north


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Case Study I: Plant Layout

Site OverviewFlat, previously grazed land

Total Acreage: 91 Acres

Non-square shape

Wetlands

SiteBoundary

Wetlands


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Case Study I: Plant Design Challenges

Avoid wetlandsUsing the wetlands would introduce

additional permitting time and risk

Cannot remove wetland trees

Need to avoid shading from wetlands trees

Non-standard building blockMW-In-A-Box would not work

Standardize as much as possible

Maximize system size and generation


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Case Study I Plant Summary

Jacksonville Solar Plant Summary15.0 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


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Case Study II: Blue Wing Solar

Blue Wing SolarLocation: San Antonio, TX

Latitude: 31.1o north


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Case Study II: Plant Layout

Site OverviewUndulating land, previously farmed

Total Acreage: 115 Acres

Non-square shape

Plot oriented 25 west of south

Wetlands

Site Boundary

Low swellwith existingtrees


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Case Study II: Plant Design Challenges

Site oriented 25 degrees west of southDifficult to optimize capacity and layout at due south

Standard design practices suggest orienting west of south will reduce

generation


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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)

98.0%

98.5%

99.0%

99.5%

100.0%

100.5%

101.0%

0 5 10 15 20 25 30

PercentofDueSou

thGeneration

Azimuth Angle (degrees west of south)

Percent Decrease in Generation as a Function of AzimuthSan Antonio Typical


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Case Study II: Plant Summary

Blue Wing Solar Plant Summary16.1 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


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Summary

For many sites a standard MW-In-A-Box design is not the

optimal solutionThe optimal solution may be a combination of standard andnon-standard building blocks

Best practices should include optimizing site layouts to

accommodate existing site conditions and constraintsIt is often necessary to perform detailed parametric analysisto optimize land use and generation while reducing balanceof system costs

Documents

Forrest Collins Juwi Solar