Pre-feasibillity study of CO₂-capture from waste avfallsforbrenning på Øra

Frevar KF has engaged Norsk Energi to conduct a feasibility study during the period 2024/2025 to explore the possibilities for Frevar KF to establish carbon capture plant to reduce its CO₂ emissions. The study has been limited to suppliers with amine technology who can deliver a carbon capture plant as a service (CCaaS – Carbon Capture as a Service). The study also considered the option to include the neighboring company, which is also a waste incineration plant, Saren Energy Bio-EL (SEB).

The results of the study include, among other things, a design basis, a proposed progress plan, an application for connection to the power grid, an overview of regulatory conditions, necessary permits, proposed business models, and a final report. A wide range of suppliers were contacted to see if they could deliver a CCaaS plant to Frevar KF and to assess the maturity of the supplier with the aim of preparing Frevar KF to enter into a letter of intent before the project moves forward.

The report has focused primarily on economic profitability models for Frevar KF with a CCaaS plant with various combinations of plant configurations:

• Heat pump (HP) that provides heat to district heating (DH) from residual heat in the carbon capture plant.
• Back pressure turbine that generates electricity from the pressure reduction in the steam to the capture plant.
• Steam-producing HP that uses residual heat from the capture plant to produce its own steam.

The carbon capture plant with the HP that delivers to DH based on surplus heat from the capture plant is the best economic alternative. This option is dependent on Frevar KF being able to sell the heat from HP to DH at a higher sales price than DH from steam, and that Fredrikstad Fjernvarme does not realize other HP projects that take the income basis for the new HP.

Based on the results of the economic profitability model, the profitability for Frevar KF is highly sensitive to the various assumptions made. In particular, the level of subsidies, electricity price, as well as the development in the price of CO₂ quotas and the sale of biogenic certificates have a significant impact on profitability. Comparisons also showed that it would be more profitable for Frevar KF to own its own capture plant, rather than purchase the service.