Coral South was the first project approved by our Area 4 partners for developing gas resources discovered in the Rovuma Basin, off Mozambique’s coast. The project involves producing and selling gas from the southern part of the Coral field, using a floating plant for liquefying natural gas (LNG) with a capacity of 3.4 million tonnes, linked to six subsea gas producing wells. Coral Sul was developed with an approach based on energy optimization, based on a systematic analysis of efficiency. Its characteristics include zero flaring during normal operations, the use of thermal efficient aero-derivative gas turbines for refrigerant compressors and generation, the use of Dry Low NOx technology to reduce NOx emission and waste heat recovery systems for the process. In June 2022, we began introducing hydrocarbons into the plant. With the introduction, the Coral Sul FLNG starts producing its first cargo of liquefied natural gas in the second half of 2022, thus adding Mozambique to the list of LNG-producing countries, and contributing to the country’s economic and social development.
Starting from the design phase, thanks to a systematic analysis of energy efficiency, solutions to minimise CO2 emissions were adopted, for example by means of gas turbines that have reduced emissions in comparison to similar ones, variable-speed electric engines, low-loss, high-voltage electric transformers, maximized system waste heat recovery (WHR) efficiency, boiler exhaust WHR, high-efficiency gas treatment. These technologies integrate and they are aimed at decreasing the energy used to liquefy the gas and minimising the impact on the environment, which places Eni's FLNG ship above the benchmark in its sector in terms of energy efficiency. Overall, Coral Sul FLNG's energy consumption is significantly lower than the industry average: 256 kWh per tonne of LNG produced instead of 275/400 kwh/ton of such units in operation today. This is the result of the expertise of an international team of technicians and engineers from three different continents: Asia, Africa and Europe.
