© 2010 SunPower Corporation Tom Starrs, Managing Director Utility and Power Plants, Americas

© 2010 SunPower Corporation


Tom Starrs, Managing DirectorUtility and Power Plants, Americas


SunPower 2010 – 25th Anniversary

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Commercial Power PlantsResidential

2010: Revenue $2.15-$2.25B

5,500+ Employees

World-leading solar conversion efficiency

1,500 dealer partners, #1 R&C USA

Diversified portfolio: roofs to power plants

550+ MW 2010 production

>1.5 GW solar PV deployed 5 GW power plant pipeline


SunPower Technology

Highest Efficiency PV

Up to 50% more energy v. standard PV

Up to 100% more energy v. thin-film PV

T0 Single-Axis Trackers

Follows the sun’s path across the sky

Captures up to 25% more of the sun’s energy than fixed-tilt systems

Leading experience and reliability: The world’s most widely deployed single axis tracking system

Lowest Impact Technology

Maximizes energy output

Reduces land area required

Minimizes impact to species and habitat

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Advantage:PV

Advantage:CSP

Comments

Storage Thermal storage allows extended

power production – at substantial additional cost

ModularityCSP plants need 250 MW or more

for economies of scale – PV is economical at any plant size

Water Use CSP requires 800-1,000 gallons/MWh. PV requires none.

O &M Multi-MW PV plants can operate unattended, w/ remote monitoring

Reliability PV has demonstrated 25-30 year life with 98%+ availability

Price PV was more expensive, now at parity, and trending down

PV vs. CSP

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www.californiavalleysolarranch.comwww.sunpowercorp.com

California Valley Solar Ranch

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Project Location

First Solar/ Topaz

SunPower/ CVSR

California Valley subdivision

7,200 2.5 acre lots

Carrizo Plain National Monument

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Site Selection – Why California Valley?

Balance between technical, environmental, and policy considerations

Best solar resource in PG&E service territory 315 sunny days/yr / higher elevation / lower temps

Protected from coastal and valley fog / low humidity

Flat, remote site, sufficient for large scale PV

Adjacent to existing high-voltage transmission & highway infrastructure

Restoration of 2 abandoned gypsum mines

Identified in County General Plan Energy Element as “crucial location of high solar potential”

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California Valley Solar Ranch Site – 2008 Photo

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California Valley Solar Ranch – 2008 Photo

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California Valley Solar Ranch – 2008 Photo

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Original Design with T20 Trackers

Date: Q1 2009

Arrays & Bldg – 1,935 acres

Design emphasis:

Maximize use of flat areas

Minimize grading

Incorporate wildlife corridors

GKR impacts:

Not measured

Not known to be present at

the time

Focus on flattest land

Wildlife corridors

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Redesign with T0 Trackers – CEQA Alternative #1

Date: Q1 2010


Design emphasis:

Reduce impact on presence

of GKR

Widen wildlife corridors

Reduce visual impacts from

SR 58

GKR impacts:

50% of known precincts

impacted

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Redesign to Avoid GKR - CEQA Alternative #2

Date: Q2 2010

Array & Bldg – 1,977 acres

Design emphasis:

Reduce impact on presence

of GKR

GKR impacts:

25% of known precincts

impacted

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Redesign to Avoid GKR - CEQA Alternative #3

Core GKR area

Proposed addition to project site

Date: Q2 2010


Design emphasis:

Consider acquisition of more

land to minimize impact on

presence of GKR

GKR impacts:

Now only 11% of known

precincts impacted

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“M3” – Mitigated CEQA Alternative #3

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Date: Q4 – 2010

Design emphasis:

Maximize GKR avoidance

Increase slope tolerance

Refine borders for

efficiency

Retain full MW capacity

GKR impacts:

Now only 9% of known

precincts impacted

Proposed addition to project site and expanded corridor

Core GKR area


APPENDIX / PHOTOS

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Visual Simulation (looking to Northwest)

Visual Simulation of Project looking to Northwest

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Visual Simulation (from Hwy 58 looking to East)

Visual Simulation of Project from Highway 58 looking East

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Construction – Tracker Piers Installed

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Construction - Tracker Supports Installed

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T0 Tracker - Architecture

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T0 Tracker Rows – Close Up View


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T0 Tracker – Close Up View


Seeding After Construction

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Grazing Sheep To Manage Vegetation

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Documents

© 2010 SunPower Corporation Tom Starrs, Managing Director Utility and Power Plants, Americas