13 May 2010 – Siemens Energy has received an order from Bulgaria for erection of a combined-cycle cogeneration district heating power plant. The customer is Energie Versorgung Niederösterreich (EVN), an energy and environmental services company headquartered in Maria Enzersdorf, Lower Austria.

The power plant, to be built in the city of Plovdiv, is scheduled to start supplying approximately 50 MW of electricity and as much as 55 MW of district heat in late 2011.

Siemens will supply an SGT-700 gas turbine, an SST-300 steam turbine, a heat recovery steam generator with supplementary firing, and other auxiliary systems. With the plant operating in combined cycle duty the turbines will cogenerate both power and district heat. The order also includes a long-term service agreement.

‘Depending on the time of year, between 21 and 55 MW of district heat can be extracted from the steam turbine,’ said Markus Tacke, CEO of the Industrial Power Business Unit of Siemens Energy.

‘In the future our power plant will supply power and heat to Plovdiv. At the same time the up to 90% efficiency attained by the cogeneration plant will also make a significant contribution toward operating economy and environmental protection.’