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The World’s Largest Wind Turbine Has Been Switched On
(www.iflscience.com)
This is a most excellent place for technology news and articles.
Because using a yearly average is useful to account for fluctuations in power generation due to the change of the seasons. It might produce 50% of its power in 3 months if the fall usually is particularly windy in that part of the world.
Then how about “every year”, or “produces an annual average equivalent to”