Clean energy giants are finding a shortage of workers with the skills needed to support their ambitious growth plans.

The renewables jobs market is heating up and candidates with the right abilities are becoming harder to find, according to Miguel Stilwell, chief executive officer at Portuguese clean-energy firm EDP Renovaveis SA. The company is one of the world’s top installers of green power and plans to hire 1,300 employees over the next two years.

"There’s a war over talent globally,” Stilwell said in an interview on May 28. "The renewable sector, given the massive amount of growth that is expected, doesn’t have enough people.”