"ISE has become a leader in the development and sales of series hybriddrive systems for heavy-duty vehicles," said Gerd Goette, Managing Partnerof SVC "with an exciting backlog of orders for new diesel, gasoline andhydrogen systems. The Siemens Industry Sector has been working closely withISE for a number of years and has a sales agreement with ISE." ISE is thepreferred distributor for Siemens heavy-duty motors, generators andinverters in the United States for transit bus applications.

"As the worldwide leader in numerous areas of electronics and engineering,Siemens offers ISE support and credibility as we address the rapidlygrowing worldwide market for hybrid systems for heavy-duty vehicles," saidDavid Morash, ISE's Chief Financial Officer. "The additions of SiemensVenture Capital, Macquarie and DTE EV as investors offer further financialstrength in these challenging times, along with the continued support byNGP and RockPort."

ISE is a leading designer, developer and manufacturer of hybrid-electricdrive systems and components for heavy-duty vehicles, such as transit busesand trucks. In addition, ISE is a world leader in energy storage systemsand fuel cell control technologies for heavy-duty vehicles, and thepreferred distributor and system integrator of Siemens ELFA® electric andhybrid-electric drive components for the U.S. transit bus market. To date,ISE has delivered more than 200 hybrid-electric drive systems which havelogged over 9 million miles.

ISE specializes in the production of "series" hybrid systems, where thecombustion engine is completely decoupled from the driveline and used onlyto generate electrical power, thereby allowing the engine to operate in asmoother and more efficient mode. ISE has developed proprietary controlsystems, comprised of both hardware and software that govern energy use toincrease fuel efficiency and reduce emissions. ISE has also developedadvanced energy storage systems and electrically-driven accessories thatprovide operational and performance advantages. ISE combines itsproprietary control systems, advanced energy storage systems andelectrically-driven accessories with electric motors, motor controllers,generators and other high quality components that it develops internally orpurchases from industry leading suppliers, such as Siemens.

About ISE Corporation:

ISE Corporation, based in San Diego, CA, is a leading supplier of hybriddrive systems and components for heavy-duty vehicles such as buses, trucks,trams, airport equipment, and military vehicles. ISE is a world leader inelectric, hybrid-electric, and fuel cell technologies, and the onlyauthorized distributor of Siemens ELFA® electric and hybrid-electricdrive components for the U.S. transit bus market. www.isecorp.com

About Siemens Venture Capital:

Siemens Venture Capital (SVC) is the corporate venture organization forSiemens AG, one of the largest global electronics and engineeringcompanies, with reported worldwide sales of more than 72 billionEuros in fiscal 2007.

SVC's goal is to identify and fund investments in emerging and innovativetechnologies that will enhance the core business scope of Siemens,particularly in the focus areas of long-term growth markets such asEnergy, Industry and Healthcare.

To date, we have invested over 800 million Euros in more than 100 companiesand 30 venture capital funds, making venture capital at Siemens an integralcomponent of the Siemens innovation and growth strategy and supplementingits in-house research and development activities (3.4 billion euros and32,500R&D experts in 2007).

SVC is located in Germany (Munich), in the U.S. (Palo Alto, CA and Boston,MA), in China (Beijing), in India (Mumbai), and is active through Siemens´regional unit in Israel.

SVC is part of Siemens Financial Services and of a greater network atSiemens whose mission is to drive technological innovation by supportingstartup companies. In addition to Siemens Venture Capital, SiemensTechnology Accelerator and Siemens Technology-To-Business Center alsocontribute to Siemens' innovation strategy. Their individual mandates aredefined according to financing stages and industry focus. More informationcan be found at: www.siemensventurecapital.com

About Siemens Financial Services:

Siemens Financial Services (SFS) is an international provider of financialsolutions in the business-to-business area. With about 1,900 employees andan international network of financial companies coordinated by SiemensFinancial Services GmbH, Munich, we support Siemens as well asnon-affiliated companies, focusing on the three sectors of energy, industryand healthcare. We finance infrastructure, equipment and working capitaland act as a competent manager of financial risks within Siemens. Byleveraging our financing expertise and our industrial know-how we createvalue for our customers and help them strengthen their competitiveness. Formore information see: www.siemens.com/finance.

About Macquarie Clean Technology Fund:

Macquarie Clean Technology Fund is a fund of private equity funds. The Fundhas been designed to provide investors with investment exposure to therapidly growing Clean Tech sector of the international private equitymarket and aims to deliver strong private equity type returns over the lifeof the Fund. The Fund leverages the expertise of Macquarie's dedicatedspecialists in sourcing, structuring, and monitoring investments withprivate equity managers that have a Clean Tech focus. The Fund isdiversified by geography, investment stage, manager and vintage years.

Macquarie Clean Technology Fund is managed by a member of Macquarie Group,a global provider of banking, financial, advisory, investment and fundsmanagement services. With total assets under management of over $200billion (at June 30, 2008) Macquarie acts on behalf of institutional,corporate and retail clients and counterparties around the world.

About DTE Energy Ventures, Inc.:

With over a decade of investing experience, DTE Energy Ventures,headquartered in Ann Arbor, Mich., is at the forefront of emerging energytechnologies. To date, DTE EV has invested over $100 million inenergy-related companies and funds, making us one of the largestMichigan-based venture capital operations. DTE Energy Ventures investmentfocus is in four areas: renewables, energy efficiency, energystorage/electric drive, and environmental control. DTE EV seeks to buildvalue by creating mutually rewarding partnerships with portfolio companiesthat leverage DTE Energy's extensive energy industry knowledge. Thecompany is a subsidiary of DTE Energy Company (NYSE: DTE), a diversifiedenergy company involved in the development and management of energy-relatedbusinesses and services nationwide. Information about DTE EV is availableat www.dteenergyventures.com.

About NGP Energy Technology Partners:

NGP Energy Technology Partners, L.P. is a $148 million fund investinggrowth equity capital in companies providing technology-related productsand services to the oil and gas, power, and alternative energy sectors. Thefund is managed by investment professionals with extensive experienceinvesting in virtually all types of energy technologies and a strong trackrecord of helping companies grow, create value, and establish strategicpartnerships. NGP Energy Technology Partners is an affiliate of NGP EnergyCapital Management, a leading investment firm with $9.5 billion of capitalunder management. www.ngpetp.com

About RockPort Capital Partners:

RockPort Capital Partners is a venture capital firm based in Boston, MAthat invests in companies in the energy, environmental and advancedmaterials sectors. The firm is committed to companies with breakthroughtechnologies that deliver significant economic value to large potentialmarkets. With the closing of RockPort Capital Partners II, L.P. in January2006, RockPort has now raised over $380 million for venture investments.For more information: www.rockportcap.com

Safe Harbor Statement: Certain statements contained in this press releaseare forward-looking in nature. These statements can be identified by theuse of forward-looking terminology, such as "believes," "expects," "may,""will," "should," or "anticipates" or the negative thereof or comparableterminology, or by discussions of strategy. ISE's business and operationsare subject to a variety of risks, uncertainties and other factors.Consequently, actual results may materially differ from those projectedand/or stated by any forward-looking statements. Such risks, uncertaintiesand other factors that could cause actual results to differ from thoseprojected include, but are not limited to, the following: (1) the need forincreased ISE investment to support product and new services introductions,(2) ISE's ability to raise additional capital when and if needed, and (3)market acceptance of ISE's products and services. ISE Corporation, SiemensVenture Capital GmbH, Siemens Venture Capital, Inc., Macquarie CleanTechnology Funds, DTE Energy Ventures, Inc., NGP Energy Technology PartnersL.P., and Rockport Capital Partners make no commitment to revise or updateany forward-looking statements in order to reflect events or circumstancesafter the date any such statement is made.

ISE, the ISE logo, ThunderVolt and Transportation Recharged are trademarksof ISE Corporation. Other brand or product names are trademarks of theirrespective holders.

Copyright © 2008 ISE Corporation. All rights reserved.

ISE Contact:Gary WillmsVice President Business DevelopmentISE CorporationEmail Contact