E.on could file an appeal to the UK's supreme court, but in absence of one, MT Hojgaard would see DKK 195 million (€26 million) returned.
In 2007, the company was awarded the contract by site developer E.on to design, manufacture and install 60 monopile foundations at the project in the Solway Firth between Scotland and England.
After installation, weaknesses were discovered in the grouted connections. E.on claimed that MT Hojgaard was liable for the problem with the structures. MT Hojgaard denied liability arguing that the group had observed the applicable international standards as required by the client.
MT Hojgaard said it had followed the then-international standards set by certification body DNV (now DNV-GL), which were flawed.