BridgeTech STT Corporate Presentation September 2008

mission statement to offer leading edge technology to make the cost of solar energy competitive with fossil-fuel powered sources today Solar Thermal Technologies 2 © 2008 Solar Thermal Technologies (a BridgeTech Industries business )

about Solar Thermal Technologies • established January 2008 • extensive energy regeneration and systems integration experience • core engineering team has worked together for three years • rights to exclusive global license to energy regeneration system • owns pertinent technology IP and patents • strategic partner with Lawrence Livermore Labs • global footprint with centre of excellence currently based in California, USA and London, England Solar Thermal Technologies 3 © 2008 Solar Thermal Technologies (a BridgeTech Industries business )

the business opportunity • With a 40% increase in clean energy markets from 2006 to 2007, industry reports put clean energy and technology squarely into the mainstream • The four clean energy sectors-solar photovoltaics, wind, biofuels, and fuel cells-saw an increase in revenue growth from $55 billion in 2006 to $77.3 billion in 2007. Solar, wind, and biofuels each had more than $20 billion is revenues. • Projected revenues from clean energy technologies will grow to $254.5 billion by 2017 • Solar and wind have sustained a 40% growth since the beginning of the decade • Although solar energy is still two to three times more expensive than traditional energy, as costs come down, solar will increase its market share • In 2007, almost 3,000 mega-watts of solar power were installed worldwide Source: Clean Energy Trends 2008, Clean Edge Solar Thermal Technologies 4 © 2008 Solar Thermal Technologies (a BridgeTech Industries business )

solar thermal energy systems • sunlight is concentrated as heat, unlike photovoltaic systems that convert sunlight directly to electricity • the heat may be – stored (thermal battery) – used directly – converted to mechanical energy (heat engine) – converted to electricity (heat engine + generator) Solar Thermal Technologies 5 © 2008 Solar Thermal Technologies (a BridgeTech Industries business )

Lawrence Livermore solar thermal technology • Lawrence Livermore National Labs has already invested $1.92M in Research & Development • includes both terrestrial applications (GyroSolé™) and aerospace (Solar Thermal Aircraft Patent) • extensive laboratory testing of various sub-systems, including innovative new heat engine, has provided strong validation • inventor Dr. Charles L. Bennett holds seven* patents relevant to advanced solar thermal technology Solar Thermal Technologies 12 © 2008 Solar Thermal Technologies (a BridgeTech Industries business )

Gyrosolé™ laboratory demonstration The Gyrosolé™ Heat Powered Engine & Thermal Energy Storage System at Lawrence Livermore. Commercial engine will be MUCH simpler. (DVD can be provided which shows engine in action.) Solar Thermal Technologies 14 © 2008 Solar Thermal Technologies (a BridgeTech Industries business )

Gyrosolé™ system overview - I 1. Concentrating solar heat collection system—an efficient and inexpensive collector that tracks the sun and concentrates its incident energy as heat; it employs a proprietary alignment scheme and receiver design for improved efficiency over existing technology. 2. Thermal energy storage system—an efficient and inexpensive “thermal battery” that enables, in particular, collection of full morning’s solar heating for production of electric power in the afternoon during the period of peak power revenue and maximum consumption. It also enables the recycling of “waste” heat from the production of electricity, a unique feature that significantly enhances system efficiency. ……… Solar Thermal Technologies 15 © 2008 Solar Thermal Technologies (a BridgeTech Industries business )

Gyrosolé™ system overview - II 3. Heat engine & generator—an innovative and potentially inexpensive system for the generation of electric power, even at modest (~1 kW) power levels, but applicable to much higher power levels as well (~500 kW). This heat engine, or “Harmonic Engine”, is a unique design that promises significantly better performance-to-cost levels than current Stirling engine technology. 4. Control system—a digital system that provides control of the various components for optimal performance. Significantly, it includes a method of energy arbitrage to deliver electric power to the electric grid primarily during periods of peak revenue (for maximum economic benefit). Solar Thermal Technologies 16 © 2008 Solar Thermal Technologies (a BridgeTech Industries business )

Livermore innovations • highly scalable (~1 kW to ~500 kW) • new heat engine and simple thermal Stirling Engine storage are key enabling technologies • employs several well-established technologies brought together in unique way for low-risk and low-cost • offers distributed combined heat and power solution for residential, commercial, light-industrial consumers • others… Solar Thermal Technologies 17 © 2008 Solar Thermal Technologies (a BridgeTech Industries business )

intellectual property (IP) The following inventions have patents issued: • US7270295 \"Solar Thermal Aircraft\" • 11/543659 (+PCT filing) \"Residential Solar Thermal Power System\" • 11/710391 \"Self Pressurizing Stirling Engine\" • 11/731253 (+PCT filing) \"Rankine-Brayton Engine Powered Solar Thermal Aircraft\" • 11/801987 (+PCT filing) \"Harmonic Engine\" • 12/030065 \"Solar Thermal Power System\" The following inventions are undergoing patent protection: • \"Year-round Solar Thermal Energy and Electric Power Plant\" • \"Improved Ericsson Engine\" Solar Thermal Technologies 18 © 2008 Solar Thermal Technologies (a BridgeTech Industries business )

our competitive edge - I Suitable for Independent Provides Yields Direct System Efficiency Feature/ Individual of the Power Stored Mechanical of Solar Energy System Consumer Grid Heat Power Exploitation GyroSole™ Energy Yes Yes Yes Yes 80% to 90% System Solel SEGS No No No No 15% to 20% Solargenix No No No No 15% to 20% SEGS PV Panels Yes Yes No No Typically 15% Companies below do not yet have a commercially available product Suitable for Independent Provides Yields Direct System Efficiency Feature/ Individual of the Power Stored Mechanical of Solar Energy System Consumer Grid Heat Power Exploitation Stirling Yes Yes No No ~25% Energy Systems Infinia Yes Yes No No ~25% CoolEnergy Yes Yes Yes No ? Brayton Yes Yes No No ? Energy Solar Thermal Technologies 19 © 2008 Solar Thermal Technologies (a BridgeTech Industries business )

our competitive edge - II energy cost comparison Feature/ Cost of Electric Cost of Thermal System Efficiency of Solar System Energy Energy Energy Exploitation GyroSole™ Energy 6 ¢/kW eh 2 ¢/kW th 80% to 90% System Solel SEGS 12 ¢/kW eh N/A 15% to 20% PV Panels 21 ¢/kW eh N/A Typically 15% Solar Thermal Technologies 20 © 2008 Solar Thermal Technologies (a BridgeTech Industries business )

strategic partner Lawrence Livermore National Labs (US) • premier research and development institution for science and technology • pursues programs in advanced defense technologies, energy, environment, biosciences, and basic science • serves as a resource to the U.S. government and is a partner with industry and academia • developing programs designed to contribute to the scientific and technological basis for secure, sustainable, and clean energy resources for the U.S. and which reduce environmental risk • is engaged in more than 400 projects in the energy and environmental area Solar Thermal Technologies 21 © 2008 Solar Thermal Technologies (a BridgeTech Industries business )

market analysis 2008 2009 2010 2011 2012 Potential Customers Consumer 5 6.3 7.8 9.8 12.2 Commercial/Light Industrial 20 25 31.3 39.1 48.8 Aerospace 1 1.3 1.6 2.0 2.4 Other 0.5 0.6 0.8 1.0 1.2 Total 26.5 33.1 41.4 51.8 64.7 Total market revenues in billions of US dollars Consumer Commercial/Light Industrial Aerospace Other Source: New Energy Finance, 2008 Solar Thermal Technologies 22 © 2008 Solar Thermal Technologies (a BridgeTech Industries business )

business model • a “phased approach” is envisioned for the evolution of the power systems • Initial work will focus on rapid development of a terrestrial solar power system that has dramatic market potential – consumer – commercial/light industrial • this system will then be used to leverage the development of the aerospace power system integral to the success of Unmanned Air Vehicles (UAVs) such as the AerNavis Navis-NS ship. Solar Thermal Technologies 23 © 2008 Solar Thermal Technologies (a BridgeTech Industries business )

financials – 5 year forecast FY 2009 FY 2010 FY 2011 FY 2012 FY 2013 Sales Consumer $0 $0 $10,000,000 $25,000,000 $95,000,000 Commercial/Light Industrial $0 $0 $40,000,000 $120,000,000 $360,000,000 Aerospace $0 $0 $0 $5,000,000 $20,000,000 Total Sales $0 $0 $50,000,000 $150,000,000 $475,000,000 Cost of Goods Sold $0 $0 $25,000,000 $75,000,000 $230,000,000 Gross Margin $0 $0 $25,000,000 $75,000,000 $245,000,000 Gross Margin % 0.00% 0.00% 50.00% 50.00% 51.58% Total Operating Expenses $3,091,800 $4,155,000 $5,494,000 $8,532,000 $12,219,000 EBITDA ($3,091,800) ($4,155,000) $19,506,000 $66,468,000 $232,781,000 Net Profit ($3,091,800) ($4,155,000) $19,506,000 $66,468,000 $232,781,000 Net Profit/Sales 0.00% 0.00% 39.01% 44.31% 49.01% Solar Thermal Technologies 24 © 2008 Solar Thermal Technologies (a BridgeTech Industries business )

financials – projected sales/profits FY2009 FY2010 FY2011 FY2012 FY2013 Revenues 0 0 50 150 475 EBITDA -3.09 -4.16 19.51 66.47 232.78 $500,000,000 $400,000,000 $300,000,000 Sales $200,000,000 Gross Margin Net Profit $100,000,000 $0 ($100,000,000) FY 2009 FY 2010 FY 2011 FY 2012 FY 2013 Solar Thermal Technologies 25 © 2008 Solar Thermal Technologies (a BridgeTech Industries business )

financials – projected yearly profit $250,000,000 $200,000,000 $150,000,000 $100,000,000 $50,000,000 $0 ($50,000,000) FY 2009 FY 2010 FY 2011 FY 2012 FY 2013 Solar Thermal Technologies 26 © 2008 Solar Thermal Technologies (a BridgeTech Industries business )

BridgeTech STT Corporate Presentation September 2008

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