1 Stirling Energy Systems, Inc. SOLAR ENERGY Creating a brighter future for humanity through Orange County Business Council March 10, 2009

2 Introduction to SES

3 Overview SES acquired the world’s most efficient solar technology, the McDonnell Douglas solar Dish Stirling system, developed at a cost of $400 million by McDonnell Douglas, U.S. DOE & Kockums of Sweden SES develops central station solar electric plants and sells electricity through Power Purchase Agreements with leading utility companies SES will sell equipment for turn-key solar thermal Dish Stirling electrical power plants About SES

4 Strategic Partners SES founded in 1996, based in Phoenix, Arizona SES has outstanding technical expertise in solar energy development NTR invested $100 million in April 2008 and continues provide millions in funding, as well as excellent proficiency in large scale infrastructure and renewable energy Together SES and NTR are capable of building the world’s largest and most efficient solar generating facilities SES & NTR Partnership

CONFIDENTIAL LA ASME BRIEFING Technology Overview

6 SES Solar Dish Assembly Power Conversion Unit (PCU) PCU Boom Azimuth Drive Elevation Drive Mirror Facet Dish Controller (inside pedestal) Pedestal Box Trusses Main Beam Hydrogen Storage

7 p The SES Solar Dish Assembly SunCatcher is modular for ease of assembly and maintenance Penetrator

8 Power Conversion Unit (PCU) Stirling Engine Receiver Radiator Fan Frame Controls Stirling Engine Receiver Radiator Fan Frame Controls

9 Stirling Engine

CONFIDENTIAL LA ASME BRIEFING Significant Competitive Advantages vs. Other Solar Technologies 2 - 3x more efficient at producing grid- quality electricity. We hold the world’s record for efficiency at 31.25% (Converts 31.25% of the energy that hits our mirrors into grid quality electric power). Requires approximately one-half of the raw materials and cost of a solar power plant of equal output. Uses <1% of water used by other CSP Modular system and high availability More flexible siting Lower startup costs Targeted for utility-scale power Source: Southern California Edison and Sandia National Laboratories SunCatcher Efficiency vs. Other Solar Efficiency is key to SES’ cost-competitiveness

11 Phased Commercialization

12 High Volume, Low Cost Manufacturing Model The SunCatcher is like a “funny-shaped” automobile Cost Reduction Drivers: Economies of scale Automation Simplify product / reduce number of parts Off-the-shelf components Simplify assembly Projected cost reductions are based on a learning curve approach widely used in industry SES is leveraging potential strategic partners and key suppliers to transform hand-built units into a high performance, low-cost product Detroit high-performance engine manufacturer will build Stirling engine Production Rate $ / kW

13 Past… Today “Technology” “Commercialization” “PATHWAY” “Bridging the Gap” Commercialization Program Product commercialization Supply chain development Development projects Model power plant Company infrastructure Goals US & International markets Supply chain—US based with global reach Ultra-low cost systems High-volume manufacturing Advanced systems Starting Point 20-year history Development units Model power plant 6 systems SES supply chain Pathway to Commercialization Commercialization program is the pathway to fulfilling production contracts

14 SES Model Power Plant Operating at Sandia Located at the National Solar Thermal Test Facility (NSTTF) at DOE’s Sandia labs. – partners for more than 10 years. We are putting 150,000 watts into the Kirkland, AFB power grid. Proving ground & showcase On-Going system testing –Performance –Reliability –Systems Integration Augmented SES with Sandia scientists & engineers Located at the National Solar Thermal Test Facility (NSTTF) at DOE’s Sandia labs. – partners for more than 10 years. We are putting 150,000 watts into the Kirkland, AFB power grid. Proving ground & showcase On-Going system testing –Performance –Reliability –Systems Integration Augmented SES with Sandia scientists & engineers

CONFIDENTIAL LA ASME BRIEFING El Centro Plant SES Solar Two

CONFIDENTIAL LA ASME BRIEFING Solar Two Plant Imperial Valley site designed for 750 MW, enough energy for approximately 500,000 homes 30,000 Solar Dish Stirling systems 20-year Power Purchase Agreement with SDG&E up to 900 MW Sited on 650,000 acres at Plaster City, 10 miles west of El Centro Construction scheduled for 2010 – 2014 SDG&E and SCE contracts support supply chain sustainability

CONFIDENTIAL LA ASME BRIEFING Schedule and Process Application For Certification filed with the California Energy Commission June 30, 2008 Memorandum of Understanding with CEC and Bureau of Land Management State and federal approvals required Estimated approval 12 to 16 months Construction Spring

CONFIDENTIAL LA ASME BRIEFING

CONFIDENTIAL LA ASME BRIEFING Jobs and Cost Total cost to build plant is approximately $1 billion Construction jobs will range from 300 to 700 during four years Solar Two will create more than 160 new full-time jobs to operate solar generating facility Local job impact will be even greater with multiplier effect 19

CONFIDENTIAL LA ASME BRIEFING Additional Benefits Stirling Energy will emit no greenhouse gasses and displace tons of harmful emissions from old power plants in San Diego Stirling will enhance economic development, spark solar energy generation and produce millions of dollars of new revenues for the County of Imperial Solar Two will require only 33 acre-feet of water to generating 750 megawatts of clean solar energy 20

CONFIDENTIAL LA ASME BRIEFING Solar Generating Facility