Two of the world's biggest renewables players on Wednesday warned of challenges for the U.S. offshore wind sector under a presidency led by Donald Trump, flagging potential delays for the technology slammed by the president-elect.

The energy company flagged project-delay risks as it outlined plans for a $1.6 billion buyback and marginally raised its full-year guidance due to improved earnings potential.

RWE plans a $1.6 billion share buyback, signaling a change in spending priorities in light of expected delays in the U.S. offshore wind market following the U.S. election and in its European hydrogen business. The German power utility said late Tuesday ...