With an abundance of sun and wind, Spain is positioning itself as Europe’s future leader in green hydrogen production to clean up heavy industries. But some energy sector experts express caution over ramping up an industry that would be wholly reliant on massive increases in the availability of zero-carbon electricity.

Spain endured its hottest day of the year on Saturday, August 14, 2021, with temperatures topping 45 degrees Celsius (113 F), while authorities in Italy expanded the number of cities on red alert for health risks to 16 as a heat wave engulfed Southern Europe.