Excessive water hyacinth growth and fish cage farms on this large lake that suffers from pollutants, climate change heating and reduced oxygen, Lake Tondano, Minahasa, North Sulawesi, Indonesia, Southeast Asia, Asia

Iren district heating power plant in Turin, Piedmont, Italy, Europe

A combined heat and power plant providing hot water for space heating in Almere, Netherlands, Europe

Steam from heating plant, Tartu, Tartumaa, Estonia

A pipe taking heat from the combined heat and power plant to houses in Ilulissat on Greenland, Polar Regions

Photovoltaic or solar cells used to collect solar energy.

Heating plant, Kulturspeicher and Arte Noah art boat, Wuerzburg, Franconia, Bavaria, Germany, architect Brueckner and Brueckner

Heating plant at night, Wuerzburg, Franconia, Bavaria, Germany, architect Brueckner and Brueckner

Detail of a photovoltaic system, solar panel, solar cells

Biogas plant, biomass power plant, with combined heat and power unit, CHP, and an adjacent silo, maize silage

Hastedt coal-fired power plant, gas-fired power plant, district heating production, Bremen, Germany, Europe

Chimney of Erlanger Stadtwerke heating plant, workman scaling chimney for repair works, Aussere Brucker Strasse 33, Elangen, Middle Franconia, Bavaria, Germany, Europe

Chimney of Erlanger Stadtwerke heating plant, workman scaling chimney for repair works, Aussere Brucker Strasse 33, Elangen, Middle Franconia, Bavaria, Germany, Europe

Chimney of Erlanger Stadtwerke heating plant, workman scaling chimney for repair works, Aussere Brucker Strasse 33, Elangen, Middle Franconia, Bavaria, Germany, Europe

Incinerator and Heating Plant, Thermal power plant, designed by Friedensreich Hundertwasser, Spittelau, Vienna, Austria, Europe

District Heating Plant Spittelau, Friedensreich Hundertwasser, Vienna, Austria, Europe, PublicGround

District Heating Plant Spittelau, Friedensreich Hundertwasser, Vienna, Austria, Europe, PublicGround

Hammarbyverket heating plant in Martensdal at night, Sodra Hammarbyhamnen, Stockholm

Power plant Reuter, evening, Berlin, Germany

Arcaden Shopping Centre at night with smoking chimney of heating plant, Erlangen, Middle Franconia, Bavaria, Germany, Europe

Solar district heating plant, Nordby, Samsoe, Denmark, Europe

District Heating Plant Spittelau, Friedensreich Hundertwasser, Vienna, Austria, Europe, PublicGround

Industrial building, heating plant in the Westhafen Western Harbor, Frankfurt am Main, Hesse, Germany, Europe

Nanfeng Kiln, Oldest Kiln, Near Guangzhou, Foshan, Guangdong Province, China

Industrial processing plant