In March 2013, the winning candidates in a national election pledged to improve environmental conditions and reduce electricity prices. They created the EGM consortium to reach these goals. EGM identified natural gas as the best solution for the country’s energy needs. Natural gas has dramatically lower emissions than heavy fuel oil and significantly lower CO2 emissions per unit of energy produced, compared to other fossil fuels. Plus, it generates less noise and less smell, and delivers greater efficiency.
The project developers opted for liquefied natural gas (LNG) as the fuel source and a double-hulled purpose-built tanker as a floating storage unit (FSU), to be moored in the water adjoining Delimara.
With these guidelines, Siemens Energy developed the unique configuration of the new Delimara 4 power plant based on three key components:
- The FSU tanker docked just offshore where the LNG is stored at -162 degrees Celsius. It is transferred by pipe to
- an onshore regasification plant where the LNG is reconverted to natural gas. The regasification compound operating capacity is sufficient to handle both the new Delimara 4 facility and eight turbines from the existing Delimara 3 plant on the same site. The latter used to run on heavy fuel oil but all have been converted to gas, as well.
- Finally, the combined cycle power plant (CCPP) consisting of three Siemens Energy SGT-800 gas turbines, three boilers, and one Siemens Energy SST-900 steam turbine, equipped with the SPPA-T3000 control system, has a totaling capacity of 215 megawatts.
“Distributed generation ensures a reliable power supply. The SGT-800 is the best in its category in this power range, and being equipped with the modern dry low emission technology it meets emissions standards for a wide range of operation modes,” notes Franz Haslinger, Siemens Energy's General Project Manager for the Malta project.
In addition to providing a customized technology solution, Siemens Energy – through its Financial Services division – helped structure the overall financing concept and, ultimately, became one of three investors in the project. The capital support from Siemens Energy underscores its confidence in the project’s long-term success and positions the company as a key partner.