The interior of the SYSAV waste incineration plant in Malmö, Sweden. The plant envelope was designed by Danish architects, and employs state of the art technologies for burning municipal. A five step flue gas cleaning process ensures that emissions meet the strict Swedish environmental standards. Although Sweden has no tax on SO2 emissions, there is a NOx emission tax of $5.67 per kg NOx. Because of this the plant was designed to produce NOx emissions far below the expected new EU daily average of 200 mg/Nm3. It also uses an absorption process in order to comply with a dioxin emission limit of 0.1 ng/Nm3. The waste-to-energy plant consumes 400,000 tons of household and industrial waste per year, producing approximately 40% of the heating requirements of Malmö and its suburbs (population ~300,000), as well as generating sufficient electricity for 17,000 households. (photo by Denise Fong, Candela)