In the center of Stockholm there is one of the world's largest biomass-fired power plants, producing annually about 3,000 GWh of energy. This is enough to heat about 190,000 households. Stockholm Exergi is owned in equal parts by Fortum and the City of Stockholm. The plant in Värtan is exceptional, e.g. due to its central location. In addition, due to its large size, the power plant will play an important role in helping the City of Stockholm to meet its climate goals. Almost all the Värtan’s energy production is done from renewable energy sources. However, the power plant's functions must be constantly developed in order to make production more energy efficient.
Fuels arrive at the Värtan power plant by ship, train and truck. In 2018, a project was started at the Värtan power plant, which resulted in the installation of automatic sampling equipment for the acceptance inspection of fuels arriving by train and ship. There was a desire to pay more attention to fuel quality so that energy efficiency and occupational safety could be improved. Of course, it was also desired to take the samples as representatively and automatically as possible.