Development of a 11.2 MW Multi-Campus Solar Project October 26, 2010 Mount Diablo Unified School District

2 Agenda System Specifications Project Team System Specifications Project Team System Overview System Overview Economic Benefits Environmental Achievements Educational Opportunities Economic Benefits Environmental Achievements Educational Opportunities Triple Bottom Line Benefits of Solar Corporate Strength O&M Services Performance Guarantee Corporate Strength O&M Services Performance Guarantee SunPowers Capabilities SunPowers Capabilities

3 PG&E Source of Energy – Expensive and Volatile Source: PG&E, s/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, Map of the United States Showing Locations of Sites Undergoing Decommissioning:

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Comparing the Solar Choice and the Non-Solar Choice 5 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.

6 SunPower will offset 91% of the Districts PG&E bills by generating 81% of the Districts energy usage RENEWABLE ENERGY TARGET = 81% Electric Energy Usage – All 51 Schools*21,305,397 kWh SunPower Solar Generation17,171,710 kWh Percentage of Energy from Solar81% 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 Reduced91% *Annual Current Energy Bill is based on PG&E rate tariff as of June 1 st, 2010 (Historical Energy Bill $3,365,134) Energy Bill Savings

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8 Environmental Achievements Equivalent savings (based solely on offset CO2 emissions) AnnualLifetime Planting trees (acres)1,85855,740 Not driving (miles)17,709,484531,284,533 Removing cars (cars)1,49444,811 Homes Powered (homes)1,43543,055 Offset Home Energy Use (homes) Mt. Diablo USD environmental achievements sets the bar high for other Districts in carbon footprint reduction

9 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 Districts 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 Districts solar power systems Classroom & Assembly Guest Speakers Educational Opportunities Mt. Diablo USDs students will have access to educational opportunities on renewable energy

10 System Overview TECHNICAL OVERVIEWPROJECT ECONOMICS Systems MWp of parking canopy and shade structures System Price$60,166,112 Total Footprint666,109 sq ftEnergy Cost ($/25-year kWh)$ per kWh Energy Density16.8 watts/sq ft Schools "zero out bill or 80% load offset 46 Shade Structure only (%)19%Constrained Sites5 Parking Canopies only (%)42% Mix of Shade and Parking (%)39%MAINTENANCE Module TypeSunPower 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 11 S YSTEM S PECIFICATIONS Mounting Type Module Type System size kW DC System size kW AC Energy Yield (kWh/kWp) 1 st Year Energy Production (kWh) Total Footprint (sq ft) PC (array 1-8) SS (array 9)SunPower ,5491,606,60261,718 P ROJECT D ETAILS Business As UsualAfter SunPower Solution Rate Tariff E19SA6 Annual Current Energy Usage (kWh) 1,914,3871,606,602 Annual Current Energy Bill ($)* 300,0300 Average Energy Value ($/kWh) E CONOMIC B ENEFITS E NVIRONMENTAL B ENEFITS % Energy Usage Offset84%CO 2 Emissions Savings (lb)1,686,187 % Energy Bill Offset100%Annual Equivalent Planting Trees (acres)174 Annual Savings ($)300,030Annual Equivalent Removing cars (units)140

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13 Northgate High School

14 Northgate High School

15 Northgate High School

Glenbrook Middle School 16 P ROJECT D ETAILS Business As UsualAfter SunPower Solution PG&E Rate Tariff A6WA6 Annual Current Energy Usage (kWh) 370,200312,052 Annual Current Energy Bill ($)* 68,0350 Energy Value ($/kWh) S YSTEM S PECIFICATIONS Mounting Type Module Type System size kW DC System size kW AC Energy Yield (kWh/kWp) 1 st Year Energy Production (kWh) Total Footprint (sq ft) SS (array 1-3)SunPower ,549312,05211,988 E CONOMIC B ENEFITS E NVIRONMENTAL B ENEFITS % Energy Usage Offset84%CO 2 Emissions Savings (lb)353,076 % Energy Bill Offset100%Equivalent Annual Planting Trees (acres)37 Annual Savings ($)68,035Equivalent Annual Removing cars (units)29

Glenbrook Rendering 17

Glenbrook Rendering 18

19 Project Teams experience and knowledge ensure project success Project Team Experience working with the MDUSD SunPowers commercial division (300 employees) based in Contra Costa County Member of the Contra Costa Council Project PhaseExpertiseBusiness EntityLocation Design, Engineering & Permitting Design/Engineering/PermittingSunPower CorporationRichmond Architects/EngineeringATI Architects and EngineersDanville Geotechnical EngineeringENGEO IncorporatedSan Ramon InstallationConstruction ManagementSunPower CorporationRichmond Construction ManagementTaber Construction Inc.Concord ElectricalDel Monte ElectricDublin EquipmentPV ModulesSunPower CorporationMilpitas InvertersSatconFremont Operations, Maintenance, Performance Monitoring Performance Verification Monitoring, System Maintenance & Support SunPower CorporationRichmond

SunPower Overview Over 550 systems, and 450 MWp installed 5,000 EmployeesHighest efficiency in the world Established and Proven. Technology Leaders. $1.5B in Annual Revenue Tracker Technology Over 25 years experience 20 Extensive Educational Experience DSA Approval on Ground, Parking and Rooftop Systems

21 SunPowers 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 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

22 SunPowers technology combined with best-in-class O&M services ensures the greatest return Availability System Uptime Performance Operation at Peak Production Reliability System Longevity Scope of Services Performance Plus (w/ Module Cleaning) Customer Technical Support Hotline Performance Monitoring Website Performance ReportsMonthly Daily Performance Monitoring and Notification Preventive Maintenance & InspectionsAnnual System TestingAnnual Performance ReviewAnnual Corrective Maintenance Module CleaningAnnual O&M Approach SunPowers O&M Approach Scope of Services

23 Performance Monitoring Website

SunPowers Performance Guarantee Experience –SunPower has over 50 Performance Guarantees in place. –Backed by SunPowers 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 24