Yellow Buses Go Green: Napa School District Receives California's First Plug-in Hybrid School Bus

The Napa School District will receive good grades for its environmental responsibility when the 2007-08 school year begins. The district will have a new plug-in hybrid diesel-electric school bus that could help offset increasing fuel costs while helping protect the environment. More than 150 attendees will be on-hand Friday at a ceremony in Napa when the hybrid school bus is officially delivered. The school district will become one of only seven school districts in the U.S. – and the first in California – to operate the new plug-in hybrid school bus that has the potential to double fuel efficiency and reduce emissions by up to 90 percent. "This is exciting not only for Napa Valley Unified School District, but the whole school bus industry,” said Ralph Knight, Director of Transportation for the school district. "This program has received strong support from the school board and administration as well as local support from private citizens, service clubs, the chamber of commerce and corporate sponsorships.” Partnering for Environmental Change The new bus is a result of a nationwide initiative called the Plug-In Hybrid Electric School Bus Project, led by Raleigh, N.C.-based Advanced Energy, a non-profit corporation that initiated a buyer’s consortium of school districts, state energy agencies and student transportation providers. The hybrid plug-in school bus is built by IC Corporation, the nation’s largest school bus manufacturer, and Enova Systems, a leading provider of hybrid drive systems. Bringing the hybrid school bus to Napa is the result of strong local support and funding from the Bay Area Air Quality Management District, the Environmental Protection Agency’s Clean School Bus USA program, and Pacific Gas and Electric Company (PG&E). Partially sponsored by a $100,000 contribution from the Bay Area Air Quality Management District, this "next generation” school bus significantly reduces the amount of diesel emissions and lowers the amount of greenhouse gases being released into the atmosphere. "Air pollution affects all Bay Area school children,” said Jack Broadbent, Executive Officer of the Bay Area Air District. "Napa’s plug-in hybrid school bus not only cleans up the air by reducing diesel emissions, it also offers a daily lesson in environmental stewardship for our youth.” PG&E provided $30,000 to help with the purchase of the plug-in hybrid school bus. In April of 2007, PG&E showcased the first-ever utility Vehicle-to-Grid (V2G) technology demonstration in the Silicon Valley and, in June, PG&E announced it had also teamed with Google to bring plug-in-hybrid technology to its Mountain View campus. Over the last 15 years, PG&E’s clean fuel fleet has displaced more than 3.4 million gallons of gasoline and diesel, and helped to avoid 6,000 tons of carbon dioxide from entering the atmosphere. "The adoption of plug-in hybrid vehicles represents a tremendous opportunity to meet our state’s landmark greenhouse gas emission goals, and to help keep the Napa Valley's air clean,” said Jill Egbert, Manager of Clean Air Transportation for PG&E. "We are committed to helping the Napa Valley, along with our entire service area, bring more alternative fuel and clean energy in to our communities.” An additional $30,000 to fund the bus was provided by the U.S. EPA through the Clean School Bus USA program and the West Coast Collaborative, a public-private partnership to reduce diesel emissions. "The Napa Valley Unified School District is taking an important step in protecting the health of students, bus drivers and residents with their new plug-in hybrid school bus, which combines the best attributes of electric and clean diesel technology to dramatically reduce fuel consumption and diesel emissions," said Amy Zimpfer, Air Division Associate Director for the U.S. EPA’s Pacific Southwest Region. "EPA is proud to provide funding for this important milestone, which not only has significant environmental benefits, but also helps reduce greenhouse gases and brings exciting new technology to the local community." How the Hybrid School Bus Works While the exterior of the hybrid school bus looks the same as a standard school bus, it is powered with innovative new technology. The hybrid school bus project features Enova's Charge Depleting System (or "Plug In"), which was extensively tested and evaluated at IC Corporation’s research and technology facility in Fort Wayne, Ind. With an overnight charge, this system utilizes a larger battery based on advanced battery chemistry that provides stored energy intended to be drawn down over the driving cycle, thus optimizing fuel economy. In other words, the bus will use a diesel engine to operate, but the electric battery will activate when needed to reduce the amount of diesel fuel used to power the engine. Improving Fuel Economy, Reducing Emissions Depending on the bus route, fuel economy is expected to improve by 70-100 percent and emissions are expected to be reduced by up to 90 percent. "This project provides operational benefits to school districts, while also providing the reduced emissions levels desired by the U.S. Environmental Protection Agency and a valuable return on investment to school boards,” said Ewan Pritchard, P.E., Advanced Energy’s hybrid program manager. The initial powertrain for the hybrid school bus will couple a MaxxForce 7™ diesel engine with the 25/80-kilowatt hybrid-electric powertrain, incorporating a transmission, batteries and an electric motor. The system is based on a parallel architecture, allowing the system to utilize both diesel and electric power in a highly efficient manner. The hybrid bus is also configured to run on biofuel blends to increase its environmental performance. Next Generation School Buses "IC Corporation’s hybrid school bus revolutionizes the school bus industry,” said Michael Cancelliere, Vice President and General Manager of IC Corporation. "Improving fuel efficiency and reducing emissions helps school districts and the environment. IC Corporation is committed to environmental leadership and delivering value to our customers.” Later this year, other school districts around the country will be receiving the remaining IC Corporation hybrid school buses awarded in Advanced Energy’s bid. By the end of 2007, 19 hybrid school buses will be in operation because of Advanced Energy’s consortium. The following members of the buyers’ consortium have received or will be receiving hybrid school buses: Napa Valley Unified School District, Napa Valley, Calif. (1 bus) -- DELIVERED Lake Chelan School District, Chelan, Wash. (1 bus) -- DELIVERED Little Rock, Ark., School District (1 bus) -- DELIVERED North Carolina Department of Public Instruction (2 buses) -- DELIVERED Jennings Transportation, Nazareth, Pa. (1 bus) – DELIVERED Florida Department of Education (2 buses) – DELIVERED South Carolina Department of Educations (2 buses) State of New York (2 buses) Durham School Services, Everett, Wash. (1 bus) City of Seattle (1 bus) Sigourney Community School District, Sigourney, Iowa (1 bus) Nevada Community Schools, Nevada, Iowa (1 bus) Killeen Independent School District, Texas (1 bus) Austin Independent School District, Texas (1 bus) Fairfax County, Va. (1 bus) The hybrid school buses are manufactured at IC Corporation’s plant in Conway, Ark. More information about the program is available www.hybridschoolbus.org. About IC Corporation IC Corporation is a wholly owned affiliate of Navistar International Corporation (Other OTC:NAVZ). The nation’s largest integrated manufacturer of school buses, IC Corporation is a leader in passenger protection, chassis design, engines and ergonomics. The company is also a producer of commercial buses. All IC Corporation buses are sold, serviced and supported through a renowned dealer network that offers an integrated customer program encompassing parts, training and service. Additional information is available site at www.ic-corp.com. About Advanced Energy Advanced Energy is a Raleigh-based nonprofit corporation that enables utility customers to improve returns on their energy investments. The corporation also strives to create environmental, economic and societal benefits through innovative and market-based approaches to energy. The Hybrid Electric School Bus Project represents a collaborative effort among many parties to improve the nation’s air quality. The project has demonstrated that industry, government and non-profits can successfully work together to improve the environment and encourage the economy. About Enova Enova Systems (AMEX:ENA)(AIM:ENV and ENVS) is a leading supplier of efficient, environmentally friendly digital power components and systems products. The Company’s core competencies are focused on the development and commercialization of power management and conversion systems for mobile applications. Enova applies unique ‘enabling technologies’ in the areas of alternative energy propulsion systems for light and heavy-duty vehicles as well as power conditioning and management systems for distributed generation systems. The Company develops, designs and produces non-invasive drive systems and related components for electric, hybrid-electric, and fuel cell powered vehicles in both the "new” and "retrofit” vehicle sales market. For further information, visit www.enovasystems.com.