St1 traces its origins to the mid-1990s, when former
Neste oil trader Mika Anttonen founded Greenergy Baltic (in partnership with
Greenergy) together with Ilkka Kokko in 1995-1996 to trade fuels with private dealers in Finland. The operating company Station 1 Finland Oy was incorporated in 1997 to develop the business beyond trading into distribution and retail channels. Early growth in the late 1990s and 2000s saw the emergence of the St1 retail brand in Finland and a shift from wholesale supply to operating a branded station network through acquisitions that built national scale; in the same period the company began piloting waste-based ethanol concepts (Etanolix and Bionolix) alongside its retail expansion. St1 moved into a new phase of Nordic expansion and vertical integration in 2010 by acquiring
Shell’s downstream operations in Finland and Sweden, including the Gothenburg refinery and approximately 565 filling stations, under a long-term licence to continue using the Shell brand at the acquired retail sites. In 2015 St1 acquired Shell’s Norwegian marketing company Smart Fuel AS, adding more than 400 retail sites, nationwide logistics and a substantial direct sales business. The deal included a retail brand licence to keep the Shell name at stations and an aviation fuelling joint venture with Shell in Norway. During the 2010s the portfolio was diversified further into renewables and heat. St1 delivered an Etanolix waste-to-ethanol unit in
Gothenburg in 2015 and commissioned a Cellunolix demonstration plant in
Kajaani in 2017 to produce advanced
ethanol from softwood sawdust, complementing earlier Finnish Etanolix/Bionolix plants. The Kajaani unit later ceased operations. In parallel, the group developed ground‑source heating through St1 Lähienergia Oy and piloted deep
geothermal heat in Espoo (Otaniemi). Although the deep‑heat pilot was not commercialized, its wells were opened for research use in 2024. ==See also==