Workers walk between two wind towers under-construction at the CS Wind ASM offshore tower plant at the Port of Aveiro in Aveiro, Portugal, on Thursday, Aug. 4, 2022. Renewables are now among the cheapest forms of electricity especially after an energy crunch and the Ukraine war bolstered gas, oil and coal prices but still face challenges over how to store power when theres a lack of sun or wind. Photographer: Eduardo Leal/Bloomberg via Getty Images