Otay Mesa Energy Center

The Otay Mesa Energy Center near San Diego, Calif., supplies San Diego Gas & Electric ("SDG&E") electricity in connection with a 10-year tolling agreement. Under the terms of the agreement, SDG&E has the ability to dispatch power from the Otay Mesa plant to serve its energy customers, and the utility supplies natural gas to fuel the power plant.

As one of California's largest, most environmentally responsible power producers, Calpine is dedicated to developing clean, reliable and cost-effective energy solutions for its customers. The Otay Mesa Energy Center generates a low-carbon energy resource - demonstrating that Calpine's customers, California and the environment can benefit from the continued development of new power generation facilities like the Otay Mesa plant.

Otay Mesa is a state-of-the-art, highly efficient, environmentally responsible combined cycle power plant, fueled with natural gas and fitted with advanced air emissions control equipment. In addition, in a first-of-its-kind program dating back to the beginning of construction, mobile emission reduction credits were created when Calpine paid for retrofitting local marine vessels and sanitation vehicles with vastly improved technology. These permanently retired emissions more than offset emissions from the plant, resulting in a net air quality benefit for the San Diego region. Finally, OMEC is the largest air cooled power plant in the State of California, conserving precious water by eliminating the need to use ground or potable municipal water to cool recirculated steam.


San Diego, CA

Commercial Operation Date:

October 2009

Calpine Net Interest Baseload (MW):

513 megawatts

Calpine Net Interest With Peaking (MW):

608 megawatts


Calpine 100%


Natural gas-fired, combined-cycle


GE combustion and Siemens Westinghouse steam

NERC Region: