Berlin ranks top among the cities in Germany with regard to its use of cogeneration systems. The city has the largest district-heating network in Western Europe. A 1,600-kilometer network of pipes delivers heat to consumers using resource-conserving technologies. Over 280 cogeneration plants across the city provide reliable and environmentally friendly heat and electricity. Nearly 30 percent of the district-heating market in Berlin is supplied by cogeneration plants, and the city has long-term plans to boost this percentage further.