S&P Global Ratings assesses Østfold Energi AS's Green Finance Framework as Dark green, indicating activities that correspond with a long-term vision of a low-carbon, climate resilient future. Østfold Energi is headquartered in Sarpsborg, Norway, and provides renewable electricity and district heating services. As of 2024, around 95% of its sales and 96% of its generated power were from its 11 wholly and partly owned hydropower plants in Lærdal, Årdal, Marker, Halden, and Sørfold.