The thermal power plant comprises two gas turbines. Each of these is connected to a designated generator for electricity generation and each has a section for recycling flue gas heat. In addition, a steam turbine with generator has been installed.

The high temperature energy extracted from the flue gas will be used for pre-heating crude oil which will be further processed at the refinery, and for production of high pressure steam which is used as an energy carrier at the Mongstad processing facilities.

Emissions to air

The thermal power plant will increase emissions of the greenhouse gas carbon dioxide (CO2) from the Mongstad facilities by about 0.95 million tonnes annually.
However, the energy production from the thermal power plant will reduce the need for energy imports from abroad. The thermal power plant’s energy production is more efficient compared with energy imports, thus reducing global CO2 emissions.

The emissions of nitrogen oxides (NOx) are not expected to increase from current emissions levels at Mongstad.

Only minimal changes to emissions of sulphur dioxides(SO2), methane (CH4) and oil vapour (VOC) are expected from the thermal power plant.

Discharges to sea

The development of the thermal power plant is not expected to increase discharges to sea through the treatment facility at Mongstad, apart from minimal amounts of drainage water. This will mainly be rain water which may be contaminated with hydrocarbons due to normal sweating from pumps and other equipment.

Discharges of cooling water to sea will increase by approx. 6500 cubic meters per hour.