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Fortnightly Magazine - March 2014

tender process, which also included a 25-year PPA with the Mexican Federal Electricity Commission (CFE). CFE also will supply the natural gas to fuel the new plant's two GE turbines.

Tri-State Generation and Transmission Association selected Hitachi Power Systems America (HPSA) to design and supply a selective catalytic reduction (SCR) system for its Craig Generation Station Unit 2 in Craig, Colo. The coal-fired unit generates about 428 MW. The SCR system will use Hitachi's catalyst for NO X removal over a wide operating load range throughout the year. Tri-State Generation expects the SCR will help it meet or exceed its NO X emissions-reduction requirements while minimizing sulfur trioxide (SO 3) emissions.

Siemens and Fortum signed a long-term service contract for the Nyaganskaya GRES combined cycle power plant in Nyagan, Russia. (GRES is the Russian acronym for "state district power plant," generally steam condenser-type coal-fired boiler plants.) The power station consists of three combined-cycle power units totaling 1,254 MW. The first unit, with a capacity of 420.9 MW, began commercial operation in April 2013. The commercial operation of the second unit began at the end of 2013, and the third unit is currently under construction. Under terms of the long-term agreement, Siemens will provide service and maintenance for the gas turbines, steam turbines, and generators of all three combined-cycle plants for a period of six years.

Enerjisa, a joint venture of Sabanci Holding and E.ON, ordered a turnkey combined-cycle plant from Siemens . Upon completion in the spring of 2016, the Bandirma II in Turkey will have an installed capacity of around 600 MW and an efficiency of over 60 percent. Siemens will also supply the following main components: an SGT5-8000H gas turbine, a model SST5-5000 steam turbine, and an SGen5-3000W water-cooled generator, along with the entire electrical system, a 400 kV high-voltage switchgear installation, and the SPPA-T3000 instrumentation and control system. The order also includes a Benson-type heat recovery steam generator manufactured by NEM and the auxiliary and ancillary systems.