Paul-
Sorry about throwing jargon around without an explanation as to what it means. In a CCGT plant, the exhaust heat from the jet engines (which drive generators) is recovered and used to generate steam in a specially designed boiler called a HRSG (Heat Recovery Steam Generator) (Pronounced "her-sig"). The steam is then used to drive another turbine/generator setup. CCGT plants are among the cleanest fossil fuel based power available, due to the extensive pollution controls installed on them. They are also versatile, since turbine engines can run on gaseous or liquid fuels.
There are also simple cycle gas turbine plants, where the exhaust heat is just blown up the stack and wasted, although those are much less common than CC.
Thnaks for the info on the trains. I have heard that the train service has deteriorated in the past few years since the industry was privatized. Is this true?
