Last week, Ofgem awarded the offshore transmission owner (OFTO) license to the Balfour Beatty and Equitix consortium. It will be responsible for the operation and maintenance of the link.
The transmission link between RWE's 576MW project and the grid is valued at £352 million. EIB's loan will help the license owners to complete the acquisition of the link.
The funding will issued through EIB's project bond credit enhancement facility, which aims to increase other private investment.
Assets include two offshore substations, 120 kilometres of cabling and an onshore substation in north Wales.
It also said it would provide financing for the Humber Gateway and Westermost Rough links.