California Institute of Technology

Combined Cycle Cogeneration

In 2003 we installed the current 12.5 MW cogeneration system.  Although our power generation increased by more than 100%,  our total NOx and CO2 emissions decreased by 17.4%. In 2004, after one year of operation and collection of operational data, we won the DOE and EPA national award for high efficiency and environmental friendly system.

  

 

Technical

  • 10 MW Solar Mars gas turbine
  • Heat Recovery Steam Generator (HRSG)
  • 2.5 MW Steam Turbine Generator (STG)
  • Operates on natural gas fuel.
  • Operates about 330 days per calendar year.

 

Operational

  • In 2004 produced about 85–90% of campus power consumption.
  • In 2007, due to campus growth, produced about 74% of campus power consumption.
  • Presently we use 80% of our power on campus, 20% is injected to the PWP grid and we buy it back.  With a new metering arrangement project we will be able to use 100% of our cogeneration output in-house.