A science presenter, writer, speaker & former TV host; author of The Skeptic's Handbook (over 200,000 copies distributed & available in 15 languages).



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Warning! Wind power warms local climate for next hundred years, needs 5 – 20 times as much land

It’s not often we see a report that turns things on their head quite like this.

Wind turbines may cause more local warming than global cooling in the next century.

Photo: Jo Nova

If the US were to install a lot of turbines, Wind power could warm the United States by 0.24 degrees Celsius instead of cooling it, because wind turbines “redistribute heat” in the atmosphere. They mix the surface layers. (0.24C would be equivalent to two decades of recent warming.) The largest effect is at night where wind plants can warm the local area by 1.5C.

At least 10 previous studies have now observed local warming caused by US wind farms. Keith and Miller compared their simulated warming to observations and found rough consistency between the data and model.

Nick Carne — Cosmos magazine

The new studies by Keith and Miller were published in Environmental Research Letters and Joule.

Major downer. The power density of wind energy is up to *100 times* less than predicted.

The new research suggests we can’t put too many turbines to close together or the whole group become far less efficient. That means we need 5 – 20 times [...]