The dispute between Greater Gabbard Offshore Winds Limited (GGOWL) — jointly owned by energy companies SSE and RWE — and engineering firm Fluor centred around 52 of the wind farm's monopiles.
In a statement, GGOWL said the two parties had reached an agreement, although details of the settlement were not disclosed.
The project was completed in September 2012.
In 2011, Fluor hit GGOWL with a £300 million (EUR 353 million) claim saying GGOWL had carried out unnecessary testing and repairs to monopiles and transition pieces at the site. GGOWL counter-sued in April 2012, alleging 52 out of 140 transition pieces were defective.
Late last year GGOWL won the first stage of the dispute. The consortium will not have to pay any money to Fluor.
Speaking about the settlement, GGOWL general manager Iwan Tukal said: "The agreement between GGOWL and Fluor is a positive development, bringing to an end the contractual dispute between the two parties.
"It is also encouraging that the wind farm has performed well since it was energised and our focus remains on ensuring it is a safe, efficient asset that makes a significant contribution to achieving the UK's targets for renewable energy."