PRESS RELEASE : December 3rd, 2007

Marubeni Corporation of Japan to invest $16.6 million in California Wind Developer Oak Creek Energy Systems

Marubeni to provide funds to support leading California developer’s wind energy projects

Tokyo, Japan and Escondido, CA - Monday, December 3, 2007– Oak Creek Energy Systems, Inc., announced today that it has received approval by a majority vote of its shareholders to allow Marubeni Corporation of Japan (MARUBENICORP 8002) to acquire a controlling interest. The transaction will occur through a $16.6 million equity investment in Oak Creek Holdings, Inc., a newly formed parent holding company. Oak Creek, a leading California renewable energy company in development, construction and operation of wind energy projects, will also enter into a Development Agreement which will give it the opportunity to be Marubeni’s exclusive wind energy development partner for North America.

Oak Creek is one of the longest-running wind energy generators in the Tehachapi region of Southern California and currently has more than 5,000 MW of wind energy projects in its development pipeline in the US Southwest.  Significant among them is the Alta Wind Energy Center project in Kern County, California.  Development there is being undertaken by Alta Innovative Power Company LLC, Oak Creek’s joint venture with Allco Finance Group of Sydney, Australia. -READ MORE-