1 Natural Gas for Transportation: The Secret Is Out Mason Ecker, Business Development Manager Florida March 17, 2010

2 Clean Energy Largest provider of vehicular natural gas (CNG & LNG) in North America –100+ million gallons sold during 2009 Full service –Design, Build, Operate & Maintain Stations –Fuel and Fleet Marketing –Vehicle Grants (Awarded over $150 Million) –Financing Operating Territory –190+ stations –16 U.S. States –20 Airports Publicly-traded as CLNE on NASDAQ –Fuel 17,000+ customer vehicles daily

Why Natural Gas for Transportation? Cheaper –Costs average between $0.50- $1.00 less per gallon than gasoline Cleaner –Cleanest burning fuel available –Reduces GHG emissions by up to 30% and NOx emissions by 85% Domestic –98% domestically produced –Gallon per gallon displacement of foreign oil –150 year supply

4 Average Retail Fuel Pricing

Economic Considerations – What Percentage of Your Budget is Related to Fuel Costs? According to the US Energy Information Administration the spread between natural gas and petroleum is forecasted to increase in the coming years; fleets using natural gas will have a competitive advantage over those using gasoline. Pricing is based on gasoline gallon equivalent of CNG (inclusive of commodity and compression fee)

6 NGVs Produce Significantly Less Smog and Soot N0x Reduction: Less Smog ≥85% 0-25% 10-15% -5-0% 2-6% 0-3%Minimal PM Reduction: Less Soot ≥90% w/Cat 50-65% 15-20% 35-40% ~20% >85% ~20% Greenhouse Gases OCO 23% GHG reduction compared to diesel fuel 30% GHG reduction compared to gasoline fuel CEC’s Well to Wheels Study Source: South Coast Air Quality Management District 2007 Air Quality Management Plan Summit Panel

7 NGVs Are a “Good Fit” for Many Fleet Applications Local/State Government –All Depts. Airports –Terminal Buses, Hotel/Parking Shuttles, Taxis, Door-to-Door Refuse –Collection/Transfer Transit –Buses, Maintenance, Supervisors School Districts –Buses, District personnel, Maint. “Short-Haul” Delivery –Food & Bev., Port-Rail, Linen Svc, Utilities –Gas/Electric/Water, Communications

8 Available Natural Gas Engines and Vehicles Altech-Eco (Ford) −2.0L Focus (bi-fuel and dedicated) −Expected to announce Fusion cert any day American Honda –1.8L Civic GX (dedicated) BAF Technologies (Ford - dedicated) –4.6L Crown Vic/Gr. Marquis/Town Car –5.4L E250/350 vans; F150/250/350 p.u./SUVs –6.8L E-450 cutaway Baytech Corporation (GM) –4.8L Vans, pick-ups (bi-fuel and dedicated) –6.0L Vans, p.u, cutaways, W3500/4500 CF, Isuzu NPR/HD, Workhorse W42 (ded./bi- fuel) –8.1L C Topkick; Workhorse W62 FuelTek (Ford) –5.4L E150/250/350 vans and E350 club wagon; F250/350 p.u. + C/C (bi-fuel) IMPCO (GM) − 3.5L, 3.9L Impala (bi-fuel) − 4.8L G series vans (bi-fuel) − 5.3L Tahoe, Avalanche, Suburban Suburban, Yukon, Yukon XL, pick-ups − 6.0L pick-ups and G vans (bi-fuel) NaturalDrive (GM) −3.5L, 3.9L Impala (dedicated) Cummins Westport –5.9L “B Gas Plus” – hp (Shuttles, sweepers, work trucks) –8.9L “ISL-G” – hp (Refuse, bus and work trucks) Emission Solutions Inc. –7.6L Phoenix NG – hp (re-power Int’l DT466, MaxxForceDT) Westport Innovations Inc –15L “GX” – 400/450hp

9 Product Availability 9

Clean Energy Stations City of College Park, Atlanta Hartsfield Airport Phoenix Sky Harbor (Eastside Station) Los Angeles International Airport Dallas Fort Worth

11 CNG Time Fill CNG Time Fill

12 Fast Fill & Time Fill Dispensers Dispenser TIMEFILL FASTFILL Dispenser

13 Significant Fuel Savings per Vehicle Estimated Annual Fuel Cost Savings Taxi (CNG) Shuttle Van (CNG) Refuse Truck (LNG) Municipal Transit Bus (LNG) Refuse Truck (CNG) Municipal Transit Bus (CNG) * Includes Vehicle Tax Credit Class 6/7 Trucks (CNG/LNG) Class 8 Trucks (LNG) Incremental Cost* $0-$3,000$6,500$6,000 $8,000$18,000 Annual Fuel Usage (Gallons) 6,0007,50011,12016,68011,12016,680 8,34016,680 Comparison Fuel Gas Diesel

14 Federal Tax Credits President’s Energy Bill Tax Credits Effective January 1, 2006 President’s Energy Bill Tax Credits Effective January 1, 2006 GVWR < 8,500 lbs= $13,800 ($4,000) –Honda Civic, Ford Crown Victoria, Chevy Astro, GM SUVs GVWR 8,500-14,000 lbs= $16,000 ($8,000) –Ford F-150, 250, 350 Sierra/Silverado pickup, Express/E350 van GVWR 14,000-26,000 lbs= $18,000 ($20,000) –Ford E450 or GM 8.1L shuttle bus GVWR > 26,000 lbs= $40,000 ($32,000) –Dump Truck, Refuse Truck, Transit Bus, Street Sweeper Will cover a certain amount (up to 80%) of the incremental cost for each dedicated natural gas vehicle based on vehicle’s GVWR (Gross Vehicle Weight Rating)

Summary and Next Steps Fuel Diversity is the Solution to: –Reducing our GHG emissions –Increasing our energy independence –Sheltering operating budgets from $4 per gallon fuel and saving significant fuel costs Natural gas can play a key role in: –Reducing operating costs –Meeting emissions reduction policies Strong partner in Clean Energy –Turnkey CNG fueling –Design, build and operate station –Low, stable fuel price option –24/7/365 maintenance –Secure grant funding for fleet replacement

16 Contact Info Mason Ecker Business Development Manager, Florida Sanford, FL (407)