The Trump Organisation described the announcement about survey work starting on the £230million European Offshore Wind Deployment Centre (EOWDC) as a “meaningless” sales pitch.
It also accused Aberdeen City Council leaders of showing poor judgement in backing the project.
US billionaire Donald Trump has opposed the development every step of the way, claiming it will ruin the view from his Trump International Golf Links at Menie, north of Aberdeen.
The US presidency hopeful insists the Scottish Government’s decision to approve the plan in 2013 was flawed.
But his legal challenge to the scheme was rejected by the Court of Session in Edinburgh and then by the UK Supreme Court.
Mr Trump, currently leading the race to become the Republican candidate for the next election for the White House, has vowed to fight on in the European Court of Justice.
He has previously claimed it is “common knowledge” there is no external funding available for the scheme and insisted it will never happen, saying “comments that suggest otherwise are nothing more than delusional posturing”.
A statement released on behalf of his New York-based business empire yesterday pulled no punches about his feelings about the EOWDC – or about the city council and its involvement in the scheme as a member of Aberdeen Renewable Energy Group (Areg).
It said: “This recent (EOWDC) statement is meaningless and is nothing more than the company dressing-up the site for sale, yet again.
“Three years ago, they made the same announcement about starting geotechnical testing.
“It is well-documented that Vattenfall has been haemorrhaging financially and is divesting its interests.
“This project has lost investors because there is no economic case and the lack of transparency from Aberdeen City Council and their involvement with Areg is disturbing.
“We have made multiple FOI (freedom of information) requests in recent months and await the results as we prepare our case for the European courts.”
The statement added: “Aberdeen City Council has an appalling track record of poor decision-making on the economic future of the area.
“Their latest statement on the EOWDC is a terrible indictment on the current leadership, who foolishly think that giant wind turbines are the answer to the current problems facing the oil industry.”
In May 2013, partners in the project announced the start of “major” geotechnical surveys “which will help us gain a further understanding of what is under the seabed and enable us to progress with foundation type selection and design”.