Germany, which has relatively few domestic natural resources, imports most of its raw materials. It is a major producer of bituminous coal and brown coal (lignite), the principal fields of the latter being west of Cologne, east of Halle, south and southwest of Leipzig, and in Lower Lusatia in Brandenburg. Other minerals found in abundance are salt and potash, mined at the periphery of the Harz mountains. The mining of most metallic minerals ceased for economic reasons in western Germany before unification; in the 1990s the centuries-old mining and processing of copper ores in the Mansfeld area of eastern Germany and the mining and processing of uranium ores for the benefit of the Soviet Union in the Ore Mountains also stopped. There are small reserves of oil and natural gas in northern Germany.

As in all industrialized countries, water supply is a constant problem. The filtration of water on riverbanks (e.g., those of the Rhine) is one source. It is supplemented by reservoirs in the uplands. For example, the Harz mountains provide water to much of the North German Plain as far as Bremen, and the Ore Mountains supply the central German industrial region.

Oil is Germany’s principal source of energy. As domestic production is quite limited, most crude oil is imported. Many petroleum products also are imported, transported from Rotterdam by product lines, barges, and rail. Until the mid-1950s the refining of oil took place at the coast, notably at Hamburg and Rotterdam; however, refineries have been developed at inland locations close to markets, mostly on rivers such as the Rhine and Danube, which are served by pipelines from Wilhelmshaven, Rotterdam (Netherlands), Lavéra (near Marseille, France), Genoa (Italy), and Trieste (Italy). Eastern Germany receives oil delivered by pipeline from Russia to a refinery at Schwedt on the Oder, which supplies the central German industrial region; there is also a pipeline from Rostock that provides industry with oil. German supplies of natural gas are significant, but most gas is imported. Principal sources are the Friesian and North Sea fields of the Netherlands and the Norwegian North Sea. Gas is imported from Russia via a pipeline from the Czech Republic, with a branch serving eastern Germany and Berlin.

Bituminous coal, Germany’s second most important source of energy, is available from the Ruhr field and from the smaller Saar, Aachen, and Ibbenbüren fields, though extraction is costly and often subsidized. In the last half of the 20th century, however, output shrank by some two-thirds. Coal now has two major uses: the generation of electricity and the production of metallurgical coke. A striking feature of the German economy is the significance of brown coal (lignite). This low-grade, waterlogged fuel can be worked economically in vast open pits, which are mined with massive machines. About seven-eighths of all the coal is fed straight to electric-power generating stations that are situated on the field itself. A relatively small quantity of the coal is pressed into briquettes for domestic heating. Electricity generation is also the principal use of the main fields in eastern Germany; however, during partition lignite was a major basis of the chemical industry as well as a source of gas and briquettes for urban consumption. After unification many eastern German pits closed, particularly those producing the most sulfurous coal. The shortfall in energy output led the federal government to subsidize additional imports of gas from Russia.

The largest producers of electric energy are the thermal plants that are located primarily in the Ruhr and the Rhenish brown-coal fields and in the brown-coal fields of the east, especially in Lower Lusatia. During partition all western German plants were required to significantly reduce the emissions of the dust, sulfur dioxide, and nitrogen oxide formerly emitted into the atmosphere. Plants in the east were not similarly regulated and thus contributed to general atmospheric pollution; after unification a number of them were closed and others were upgraded.

Nuclear power plants rival thermal plants in significance. In western Germany they are typically located on the coast or on rivers far from the coalfields. Plants in eastern Germany, built on the Soviet (Chernobyl) model, were closed for safety reasons. At the turn of the 21st century the German government committed to phasing out all the country’s nuclear power plants. In 2010, however, claiming that nuclear plants would be necessary until renewable energy technologies became sufficiently productive, the government extended the life span of the country’s existing plants. That plan was quickly abandoned in the wake of the 2011 Fukushima nuclear accident in Japan, and Germany’s remaining plants were scheduled to be shut down by 2022.

The canalization of such rivers as the Main, Neckar, and Moselle, together with hydroelectric power plants in the Alps, produce relatively minor amounts of electric power; pumped storage schemes in mountain areas are important in meeting peak electricity demands. Before unification, East and West Germany had distinct transmission grids without interconnection. The West German network was linked to that of neighboring countries, allowing it to import surplus power from the French nuclear system and, during the Alpine snow melt, especially from Austria. West Berlin formerly was forced to generate its own power, adding to urban pollution. The eastern and western German grids were connected in the 1990s, and West Berlin was connected to the network in 1994.