This is the 3487th most frequent Spanish word.
eólica
Related to wind or wind energy.
In this sentence, 'eólica' is used as an adjective describing 'energía', referring to energy derived from wind.
La energía eólica es una de las más limpias del planeta.
Wind energy is one of the cleanest on the planet.
Here, 'eólicas' is used as an adjectival form modifying 'turbinas', signifying that these turbines are related to or powered by wind.
Las turbinas eólicas generan electricidad aprovechando el viento.
Wind turbines generate electricity by harnessing the wind.
In this example, 'eólica' modifies 'tecnología', indicating the technology pertains to the utilization of wind for energy purposes.