Enova Introduces New Series Hybrid Drive Systems for Heavy-Duty Urban Transportation Applications

TORRANCE, Calif.--Sept. 22, 2004--Enova Systems, Torrance, California (OTCBB:ENVA), a developer and manufacturer of electric, hybrid-electric, and fuel cell powered drive systems, announced today the immediate availability of its newest series hybrid drive systems for heavy-duty, urban transit and delivery vehicles. These leading edge, fuel efficient and environmentally friendly hybrid systems are applicable for Class 5 through Class 7 trucks as well as mid-sized to large urban transit buses.

Enova introduced its new "Hybrid Power" series hybrid drive systems this week at the Electric Drive Transportation Association's annual trade show and symposium in Orlando, Florida and showcased a Class 8 truck equipped with this innovative new system in the ride and drive exhibit. Ideally suited for heavy duty urban delivery and urban transit applications, these systems include a high torque electric drive system, all electric accessories, energy management, energy storage, and power generation. The Company's new hybrid systems can also be configured to generate alternating current electricity for other applications such as plug-in power tools.

Enova's new diesel generator, the power component within the system, delivers 60 kilowatts of continuous power and integrates seamlessly with Enova's 120kW and 240kW drive systems and its other digital power management components. The generator is powered by a 2.5 liter Euro-3 turbo diesel and power generation is controlled by the on-board energy management system. The driver has the option of turning off the generator when silent operation is preferred. In an urban transit or urban delivery cycle, Enova's series hybrid drive systems are expected to deliver 40 to 60% in fuel savings, reduced brake maintenance costs, and significant reduction in nitrous oxide (NOx), carbon monoxide (CO), and other particulate matter emissions when compared with conventional internal combustion diesel powered vehicles in a similar environment.

"Our newest drive systems offer a total solution for heavy-duty vehicle manufacturers and operators who seek to increase fuel economy and reduce operating costs as well as harmful emissions. As both U.S. and international governments and communities continue to mandate alternative energy solutions for these significant consumers of fossil fuels, demand for our hybrid systems will continue to accelerate," commented Ed Riddell, President and CEO of Enova. "This latest addition to our line of electric, hybrid-electric and fuel cell hybrid systems will enable the company to aggressively market our products as a complete power train package."

Enova Systems develops and produces advanced systems including software, firmware and hardware for applications in the growing alternative power industry. The Company's focus is digital power conversion, power management, and system integration, for two broad market applications -- vehicle power generation and stationary power generation. The Company develops, designs and produces drive systems and related components for electric, hybrid-electric, and fuel cell powered vehicles.