Since 1933 the Yefremovskaya
CHP has been operating, which supplies industrial enterprises with electricity and the city with heat. Yefremov is a diversified industrial city, its economy was based on three chemical plants: • Yefremov Synthetic Rubber Plant (JSC "EZSK") (synthetic rubber); • Yefremov Biochemical Plant (feed additives); • Yefremov Chemical Plant (JSC Shchekinoazot, Yefremov branch) (sulfuric acid). As of 2011, it the
Cargill plant was Russia's largest molasses producer: • Glucose-treacle combine "Yefremovsky" (molasses and syrups, starches, gluten, vegetable oils, fats and their substitutes, barley malt, compound feeds, premixes, semi-finished products from poultry meat). As of 2011, it was a division of Cargill, being renamed Cargill LLC in July. There are also a number of food industry enterprises in the city (bakery, dairy plant, etc.) working for the local market. ==Sister city==