Two of the biggest renewables companies in the world warned on Wednesday of potential challenges for the U.S. off-shore wind sector under Donald Trump's presidency, pointing out possible delays for the technology that the president elect has criticized.

RWE is the No. 2 offshore project developer in the world. The comments by Germany's RWE, the world's No.

After presenting the nine-month results, RWE's finance chief Michael Mueller said to journalists: "Given that the U.S. election results are now more uncertain than ever before, we expect a higher risk of timely implementation for offshore wind projects in the U.S."

He said, "We must expect that investment in our projects may come later than initially planned."

Christian Bruch of Siemens Energy in Munich also warned that offshore permits in the U.S. would become a problem in the future. He assumed current projects which had already received approvals in this regard would not be affected.

He told journalists that the projects would be slated for "'29,'30,'31" after presenting full year results, which included an upgrade to the company's medium-term goals, causing its shares to reach another record high.

Investors are concerned about Trump's impact on clean-energy technologies. They fear that he may repeal portions of the current president Joe Biden's Inflation Reduction Act. This is a plan aimed at attracting investment into solar, hydrogen and wind.

RWE announced a 1,5 billion euro (1,59 billion dollar) share purchase as a more efficient way to use its cash in response to the cooling of offshore and hydrogen markets, where investors are becoming more cautious over possible regulatory changes.

Trump, earlier this year, singled out offshore winds as a technology that he would be targeting once he was in office. This caused shares in Orsted to plummet, the largest offshore wind project developer in the world.

(source: Reuters)