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TRL 9: Actual System Proven in Operational Environment

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
1942 1
Physical Basis
Nuclear 1
TRL 9: Actual System Proven in Operational Environment
Filter Results7 entries
Sources
1. Nuclear reactor - Wikipedia
WikipediaLead section, Chicago Pile-1 1942
Quote, Lead section, Chicago Pile-1 1942
In 1942, the first artificial critical nuclear reactor, Chicago Pile-1, was built by the Metallurgical Laboratory.
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