Steinar Kristoffer Bjerke

Isola AS manufactures and supplies solutions for roofs, walls, floors, and ground. It products include pitched roofs, flat roofs, green roofs, membranes, roof security products, gutters, windows and doors, wall systems, and roofing shingles. The company was founded in 1983 and is headquartered in Porsgrunn, Norway.

Skagerak Varme AS provides district heating solutions for buildings with waterborne infrastructure. The company is based in Porsgrunn, Norway and is ultimately controlled by the Government of Norway. The Norwegian company's surplus energy approach allows for both heating and refrigeration. The company offers subscription services and can be contacted by phone or email. The CEO of the company is Svein Morten Rogn.

Tre Løver AS is an investment holding private company based in Skien, Norway. Tre Løver AS functions as an investment holding Norwegian company. The company was founded in 2020 and is led by CEO Kjetil Ditlefsen.