In a cavernous room filled with garbage, a giant mechanical claw reaches down and grabs five tons of trash. As a technician in a control room maneuvers the spiderlike crane, the claw drops its moldering harvest down a 10-story shaft into a boiler that is hotter than 1,500 degrees Fahrenheit. The process continues 24 hours a day to help fuel this power plant run by Tekniska Verken, a municipal government company in Linköping, a city 125 miles south of Stockholm. It is one of Sweden's 34 "waste-to-energy" power plants. Instead of burning coal or gas, this power plant burns trash. Sweden is known for strikingly reducing the trash sent to its landfills. Less than 1 percent of household waste in this Scandinavian country finds it way to landfills, according to Avfall Sverige, the Swedish Waste Management and Recycling association. Trash accounts for a small portion of Sweden's overall power supply; hydro and nuclear energy generate about 83 percent of Sweden's electricity, and wind generates another 7 percent. But garbage supplies much of the heat during cold months for the country's nearly 10 million residents. Energy from trash equals the heating demand of 1.25 million apartments and electricity for 680,000 homes, according to Avfall Sverige. Along with heat and electricity, Tekniska Verken produces methane biogas from 100,000 tons of food and organic waste each year. This biogas runs more than 200 city buses in the county, as well as fleets of garbage collection trucks, and some taxis and private cars.