research facility for Telia Sonera. Kalmar has embarked on a comprehensive program to reduce fossil fuel use. A local trucking firm, which employs nearly 450 people, has installed computers that track fuel efficiency and have cut diesel use by 10 percent, paying off the cost of the devices in just a year. The company is now looking to fuel its future fleet with biodiesel. A large wood pulp plant harnesses the steam and hot water it once released as waste to provide heating, through below-ground pipes, and generates enough electricity to power its own operations and 20,000 homes. Bicycle lanes are common; for example, the Kalmarsundsleden, and cars line up at Kalmar city's public biogas pump. Building codes now require thermal insulation and efficient windows for new construction or retrofits. Street lights use low-energy sodium bulbs, and car dealers promote fuel-efficient and hybrid vehicles. In 2011 Guldfågeln Arena was initiated. It is the new stadium of the football team of the city, Kalmar FF. The capacity of the stadium is 12,000 people and it is currently one of the newest stadiums in Sweden. The stadium was also built to host concerts and did so in the summer of 2011 when Swedish artists Håkan Hellström and The Ark performed. Climate Kalmar has an oceanic climate with some continental influences. Summers are warm and winters fairly cold with temperatures normally hovering around zero. Kalmar is among the hottest Swedish cities, with an all-time record set at . The average summer temperatures however are typical for southern Sweden. Gallery History Main sights General views Sports The following sports clubs are located in Kalmar: Kalmar FF Lindsdals IF Kalmar AIK IFK Berga Kalmar Södra IF Notable people Khamzat Chimaev - UFC Fighter Mikael Adolphson – historian Charlotta Djurström – theatre director Helena Josefsson – musician, lead singer in Sandy Mouche Ivar Kreuger – civil engineer and industrialist Jangir Maddadi – designer living in Kalmar Carl Gustaf Mosander – chemist who discovered lanthanum, erbium, terbium Anna-Stina Nilstoft – painter Jenny Nyström – painter and illustrator Henrik Strindberg – composer Hans Villius – historian Twin towns – sister cities Kalmar is twinned with eleven cities: Árborg, Iceland Arendal, Norway Entebbe, Uganda Gdańsk, Poland Kaliningrad, Russia Panevėžys, Lithuania Samsun, Turkey Savonlinna, Finland Silkeborg, Denmark Wilmington, United States Wismar, Germany See also Kalmar Municipality Kalmar Airport Kalmar Verkstad Spawn of Possession Linnaeus University Kalmar Nyckel, historical ship named