Turbine of snowplow of Bernina Express train, station of Ospizio Bernina, Poschiavo, Engadine, Canton of Graubunden, Switzerland, Europe

One of the steam turbines in the turbine hall of Krafla geothermal power station, Iceland, Polar Regions

The Andasol solar power station near Guadix with a wind farm in the background, Andalucia, Spain, Europe

Oil can, steam-engine, turbine house, Zeche Hannover mine, LWL Industriemuseum industrial museum, Route der Industriekultur Route of Industrial Heritage, Bochum, Ruhr, North Rhine-Westphalia, Germany, Europe

A solar electric generating system operated by Sunray Energy; the parabolic mirrors focus the sun's rays to heat an oil-filled tube, the heat produces steam to run an electricity-generating turbine, Daggett, Mojave Desert, southern California, USA

Wind turbine in front of steaming coal-fired power plant at sunset, energy transition, fossil and renewable energy, Niederaussem, North Rhine-Westphalia, Germany, Europe

Steam-engine, turbine house, Zeche Hannover mine, LWL Industriemuseum industrial museum, Route der Industriekultur Route of Industrial Heritage, Bochum, Ruhr, North Rhine-Westphalia, Germany, Europe