NEXT POWER MRAMOR CCPP (Conceptual Design)
CLIENT:Next Power & Group Five
PROJECT:115 MW Natural Gas Fired Combined Cycle Power Plant
LOCATION:Mramor, Sofia, Bulgaria

Enprode was awarded for Conceptual Engineering & Design of NEXT POWER MRAMOR CCPP project in December 2008. Conceptual Engineering & Design was successfully completed in April 2009 and basic Engineering Works are going on.

Next Power is a Bulgarian Independent Power Producer (IPP) company and Group Five (http://www.g5.co.za) is a South Africa originated global construction group and 50% shareholder of Next Power. Group Five is the EPC Contractor of Next Power Mramor CCPP Project.

The Project is to develop, build and commercially start-up a Combined Cycle Power Plant (CCPP) in Mramor, Bulgaria, 10 km away from the capital city- Sofia, with an estimated installed capacity of 115 MW. The total power generation capacity of the plant is based on 2 x 44 MW output from the 2 Aero-derivative Gas Turbine Generators (GTG) and 27 MW from a Steam Turbine Generator (STG), which will be driven by steam that is to be generated by 2 vertical-type Heat Recovery Steam Generators (HRSG) utilizing the waste heat coming from the exhaust of the 2 Gas Turbines (GT). The plant will also accommodate an Air Cooled Condenser (ACC), a Natural Gas Compressor Station, a Water Treatment Plant, a 220 kV Air Insulated Switchyard and Transformers. A single fuel system will be accommodated and natural gas will be used as the fuel to run the Power Plant to generate power on base load.
The generated power at the terminals of the GTGs and STG will be 11.5 kV at 50 Hz. Each generator will be connected to the Bulgarian National Grid via three separate Step-up Power Transformers at 220 kV voltage, and will meet all the requirements of Bulgarian National Grid Code.

All the other associated equipment, ancillaries and auxiliary systems are designed in such a way to complement the operation of the plant taking maximum Reliability, Availability and Maintainability into consideration.