This dimension groups energy technologies by the era in which they were first invented. Wikipedia notes that "renewable energy systems have rapidly become more efficient and cheaper over the past 40 years," a span of invention and refinement that stretches back through several distinct eras. Browsing by invented era lets a visitor compare technologies that first appeared in the same period.
Facts
Comparison
Era of Emergence Physical Basis Invented Era
Sources
1. Wind turbine - Wikipedia
History, Friedlander 1883 wind turbineQuote, History, Friedlander 1883 wind turbine
The first electricity-generating wind turbine was installed by the Austrian Josef Friedlander at the Vienna International Electrical Exhibition in 1883.
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