This dimension marks how mature a specific energy technology actually is, experimental, emerging or fully commercial. Wikipedia notes that "in some geographic localities, photovoltaic solar or onshore wind is the cheapest new-build electricity," a sign of just how mature those particular technologies have become. Browsing by maturity separates technologies still emerging from those already fully commercial.
Facts
Comparison
Era of Emergence Physical Basis Maturity
Sources
1. Water turbine - Wikipedia
WikipediaTimeline, Fourneyron 1826 outward-flow turbineQuote, Timeline, Fourneyron 1826 outward-flow turbine
In 1826, Benoit Fourneyron developed an outward-flow turbine.
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