Flagship Plant in Mönsterås Strengthens St1 Biokraft's Nordic Expansion

St1 Biokraft Mönsterås is a large-scale biogas plant that, at full capacity, produces liquefied biogas equivalent to approximately 13 million liters of diesel annually. The groundbreaking for the construction took place in February 2023, and the plant was completed in the spring of 2025. The first delivery of liquefied biogas occurred in August, and production is expected to gradually increase to reach full capacity around the turn of the year. Mönsterås is one of Sweden's most livestock-dense municipalities, and with its strong agriculture, the area offers good access to substrate. The plant receives approximately 260,000 metric tons of manure annually as input for production.

"I am very pleased that we have now inaugurated the plant in Mönsterås, and I want to express my gratitude to all employees, suppliers, partners, and owners who made this possible. The plant is a very important milestone in achieving our long-term goal of 3 TWh of our own biogas production by 2030 and our ambition to become the leading biogas player in the Nordics," says Miika Johansson, CEO, St1 Biokraft.

Liquefied biogas reduces the carbon footprint by up to 200 percent compared to a fossil equivalent and plays a crucial role in reducing the climate impact of heavy transport and shipping. Additionally, the plant produces biofertilizer in five fractions which, when returned to agriculture, reduces the need for fossil fertilizers and balances levels of phosphorus and nitrogen.

“Biogas is an excellent example of a circular economy that provides solutions to several of our major societal challenges. Here in Mönsterås, we produce biogas from local raw materials, which strengthens Sweden's energy self-sufficiency and reduces dependence on imported fossil fuels. At the same time, it offers a competitive and low-emission alternative for heavy traffic, shipping, and industry. Additionally, we produce high-quality, locally-produced biofertilizer that improves soil quality for farmers in the region. The plant in Mönsterås is part of a larger value chain and contributes positively in many ways. This is something we can rightfully be proud of," continues Miika Johansson, CEO of St1 Biokraft.

Strategic Investment with Unique Local Anchoring

St1 Biokraft is investing heavily in the expansion of new plants in the Nordics. Currently, two plants are being built in Finland. St1 Biokraft has previously communicated investments equivalent to 11 billion SEK (1 billion Euro) in both new production and distribution facilities to achieve the company's long-term goals. The plant in Mönsterås has involved an investment of approximately 900 million SEK. The project has been partially financed through Klimatklivet, the Swedish Environmental Protection Agency's investment program for green investments. The support amounts to 154 million SEK. The new flagship plant has been built in a unique partnership with farmers from Mönsterås and surrounding areas who are co-owners of the plant through Mönsterås Biogas AB.

About St1 Biokraft

St1 Biokraft, a joint venture between St1, HitecVision, and Aneo, develops biogas for heavy transport, shipping, and industry. The long-term goals are to produce 3 TWh and distribute 6 TWh of biogas by 2030. St1 Biokraft operates 13 production and upgrading plants in Sweden, Norway, and South Korea. In Finland, we have two plants under construction while we are running several development projects in the Nordics and Northern Europe. We also have a growing network of over 50 filling stations and bus depots for CBG (compressed biogas), and eight filling stations for LBG (liquefied biogas) with a target of 50 stations by 2028.