Development of a 11.2 MW Multi-Campus Solar Project

October 26, 2010

Mount Diablo Unified School District

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Agenda

System Specifications

Project Team

System

Overview

Economic Benefits

Environmental Achievements

Educational Opportunities

Triple Bottom Line Benefits of Solar

Corporate Strength

O&M Services

Performance Guarantee

SunPower’s

Capabilities

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PG&E Source of Energy – Expensive and Volatile

Source: PG&E, http://www.pge.com/myhome/edusafety/systemworks/electric/energymix/index.shtml

PG&E is largely dependent upon natural gas, an expensive and volatile source of power.

California nuclear plants are being decommissioned, not replaced

Source: US Nuclear Regulatory Commission, http://www.nrc.gov/info-finder/decommissioning/

Map of the United States Showing Locations of Sites Undergoing Decommissioning:

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Comparing the Solar Choice and the Non-Solar Choice

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Neither choice is cost or risk free (i.e., electricity is not free)

– Not doing solar means continuing to purchase ~ 21 million kWh ($3.68 million) per year of electricity at unknown but likely increasing rates over the life of the system.

– Doing solar would reduce PG&E usage by ~17 million kWh per year and would enable the District to capture ~$16 million in CSI incentive payments during the first 5 years.

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SunPower will offset 91% of the District’s PG&E bills by generating 81% of the District’s energy usage

RENEWABLE ENERGY TARGET = 81%

Electric Energy Usage – All 51 Schools* 21,305,397 kWh

SunPower Solar Generation 17,171,710 kWh

Percentage of Energy from Solar 81%

UTILITY COST OFFSET = 91%

Annual PG&E Energy Bill – All 51 Schools * (Before Solar) $ 3,681,410

Annual PG&E Energy Bill – All 51 Schools * (After Solar) $334,991

Estimated Bill Savings from Solar Generation $3,346,418

Percentage of PG&E Energy Bill Reduced 91%

*Annual Current Energy Bill is based on PG&E rate tariff as of June 1st, 2010(Historical Energy Bill $3,365,134)

Energy Bill Savings

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Vanir-Line Item Roebbelen SolarCity SunPower ParsonsBaseline - without project

1 District Utility Costs w/o Solar 295,606,721$ 295,606,721$ 295,606,721$ 295,606,721$ Expenses

2 District Utility Costs w/ Solar 129,007,657$ 130,756,838$ 119,225,831$ 124,664,240$ 3 Capital Costs (Solar Contract) 59,377,330$ 56,259,883$ 67,404,796$ 79,779,728$ 4 Sub-total Expenses 188,384,987$ 187,016,720$ 186,630,627$ 204,443,967$

Savings and Revenues5 Utility Bill Savings 166,599,065$ 164,849,884$ 176,380,890$ 170,942,482$ 6 CSI Revenues 15,545,955$ 15,236,243$ 16,150,815$ 17,433,635$ 7 Sub-total Savings and Revenues 182,145,020$ 180,086,126$ 192,531,705$ 188,376,117$

Net Benefits8 Net Savings w/o Capital Costs 182,145,020$ 180,086,126$ 192,531,705$ 188,376,117$ 9 Net Savings w/ Capital Costs 122,767,690$ 123,826,244$ 125,126,909$ 108,596,389$

Notes1. Costs expressed as 30-year nominal totals except line 3, capital costs2. Line 3 includes Maintenance contract and Performance Guarantee expenses3. Key assumptions: annual utility escalation rate = 4.47%, annual District load growth = 2%, CSI incentive = $0.19/kWh

Comparison of Proposal Costs and Benefits30-Year Project Analysis Period

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Environmental Achievements

Equivalent savings (based solely on offset CO2 emissions)

Annual Lifetime

Planting trees (acres) 1,858 55,740

Not driving (miles) 17,709,484 531,284,533

Removing cars (cars) 1,494 44,811

Homes Powered (homes) 1,435 43,055

Offset Home Energy Use (homes) 722 21646

Mt. Diablo USD environmental achievements sets the bar high for other Districts in carbon footprint reduction

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Program Elements

•Lesson Plans (“How Does Solar Work?” and more)

•Multimedia and Social Networking Tools

•Teaching Videos

•Real-Time Data Monitoring Activities connected with your District’s solar power systems

•Classroom & Assembly Guest Speakers

Program Elements

•Lesson Plans (“How Does Solar Work?” and more)

•Multimedia and Social Networking Tools

•Teaching Videos

•Real-Time Data Monitoring Activities connected with your District’s solar power systems

•Classroom & Assembly Guest Speakers

Educational Opportunities

Mt. Diablo USD’s students will have access to educational opportunities on renewable energy

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System Overview

TECHNICAL OVERVIEW PROJECT ECONOMICS

Systems 11.191 MWp of parking canopy and shade structures System Price $60,166,112

Total Footprint 666,109 sq ft Energy Cost ($/25-year kWh) $0.1487 per kWh

Energy Density 16.8 watts/sq ft Schools "zero out bill“ or 80% load offset 46

Shade Structure only (%) 19% Constrained Sites 5

Parking Canopies only (%) 42%

Mix of Shade and Parking (%) 39% MAINTENANCE

Module Type SunPower 318 –20-year maintenance, including cleaning and upkeep

Average Performance (Yield) 1,525 kWh/kWp–20-year Performance Guarantee at 95%, valued at full value of lost power (PG&E + CSI incentives)

Energy Output (Year 1) 17,171,710 kWh –Systems built over 3 increments from Q3, 2011 – Q1, 2012

Energy Output (over 25 years) 404,495,967 kWh –Warranties: modules for 25 years; inverters for 20 years

Northgate High School

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SYSTEM SPECIFICATIONSMounting

TypeModule

TypeSystem size

kWDC

System sizekWAC

Energy Yield (kWh/kWp)

1st Year Energy Production

(kWh)

Total Footprint(sq ft)

PC (array 1-8) SS (array 9)

SunPower 318 SunPower 318

1037 917 1,549 1,606,602 61,718

PROJECT DETAILSBusiness As Usual After SunPower Solution

Rate Tariff E19S A6Annual Current Energy Usage (kWh) 1,914,387 1,606,602Annual Current Energy Bill ($)* 300,030 0Average Energy Value ($/kWh) 0.1567 0.1867

ECONOMIC BENEFITS ENVIRONMENTAL BENEFITS% Energy Usage Offset 84% CO2 Emissions Savings (lb) 1,686,187

% Energy Bill Offset 100% Annual Equivalent Planting Trees (acres) 174Annual Savings ($) 300,030 Annual Equivalent Removing cars (units) 140

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Northgate High School

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Northgate High School

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Northgate High School

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Northgate High School

Glenbrook Middle School

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PROJECT DETAILSBusiness As Usual After SunPower Solution

PG&E Rate Tariff A6W A6Annual Current Energy Usage (kWh) 370,200 312,052Annual Current Energy Bill ($)* 68,035 0Energy Value ($/kWh) 0.1838 0.2180

SYSTEM SPECIFICATIONSMounting

TypeModule

TypeSystem size

kWDC

System sizekWAC

Energy Yield (kWh/kWp)

1st Year Energy Production

(kWh)

Total Footprint(sq ft)

SS (array 1-3) SunPower 318 201 178 1,549 312,052 11,988

ECONOMIC BENEFITS ENVIRONMENTAL BENEFITS% Energy Usage Offset 84% CO2 Emissions Savings (lb) 353,076

% Energy Bill Offset 100% Equivalent Annual Planting Trees (acres) 37Annual Savings ($) 68,035 Equivalent Annual Removing cars (units) 29

Glenbrook Rendering

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Glenbrook Rendering

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Project Team’s experience and knowledge ensure project success

Project Team

Experience working with the MDUSD SunPower’s commercial division (300 employees) based in Contra Costa County Member of the Contra Costa Council

SunPower Overview

Over 550 systems, and 450 MWp installed

5,000 Employees Highest efficiency in the world

Established and Proven. Technology Leaders.

$1.5B in Annual Revenue Tracker Technology

Over 25 years experience

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Extensive Educational Experience

DSA Approval on Ground, Parking and Rooftop Systems

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SunPower’s O&M Experience and Capabilities

Experience

Currently managing over 450 MW of solar system in 4 continents

Over 550 systems monitored

New capacity commissioned:

Over 120MW in 2008

Over 100 MW in 2009

40 in house O&M team members

Capabilities

Full service O&M including operations, maintenance, meter reading, and warranty administration

Most experience PV Technicians in the Business

More operational systems under management

Comprehensive monitoring and reporting capabilities

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SunPower’s technology combined with best-in-class O&M services ensures the greatest return

AvailabilitySystemUptime

PerformanceOperation at

Peak Production

ReliabilitySystem

Longevity

Scope of Services Performance Plus(w/ Module Cleaning)

Customer Technical Support Hotline

Performance Monitoring Website

Performance Reports Monthly

Daily Performance Monitoring and Notification

Preventive Maintenance & Inspections Annual

System Testing Annual

Performance Review Annual

Corrective Maintenance

Module Cleaning Annual

O&M Approach

SunPower’sO&M

Approach

Scope of Services

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Performance Monitoring Website

http://www.sunpowermonitor.com/commercial

SunPower’s Performance Guarantee

Experience– SunPower has over 50 Performance Guarantees in place.

– Backed by SunPower’s Operations Center based in Richmond, CA

MDUSD Performance Guarantee Contract:– 95% of expected output

– 20-year Term

– Upside Sharing by SunPower: none

– Accounts for value of PG&E energy rates + CSI incentives Average reimbursement rate: ~21 cents

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