Sweden's retail fuel market is highly consolidated, with the four main players accounting for approximately 90% of volume market share. A high degree of market concentration limits the opportunity for further expansion through M&A by the incumbent players. Sweden's refining capacity exceeds domestic demand and the major refining hub in the west is somewhat removed from the main consumption centre in the east. These imbalances result in a large proportion of Sweden's refined oil products being exported. Sweden also imports finished products to meet local demand in the east, especially from Finland. Retail service station numbers are in decline and the overall network contains a large percentage of automats. The structural decline in road fuel demand is supported by policy aimed at greater efficiency and de-carbonising the energy market.