Entr, along with its wholly owned subsidiary Unitech Power Systems, has been awarded a contract by Nadara to deliver electrical infrastructure studies for the 1.8GW Bellrock Offshore Wind Farm in Scotland.
Nadara, a European renewable energy producer, is planning to build the floating offshore wind project approximately 120km off the Aberdeenshire coast in the North Sea.
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Entr is the consultancy business of Aker Solutions.
The work will focus on developing an overarching concept for the project’s full electrical transmission system, spanning power generation at sea through to the onshore grid connection.
The studies will support the definition of an optimised solution for the Scottish offshore wind farm’s electrical infrastructure. They will cover areas including subsea inter-array cabling, offshore and onshore substations, export cables and grid integration.
Multiple transmission configurations are set to be studied, with the goal of evaluating the relative merits of each option in terms of technical feasibility, cost, schedule and supply chain availability.
Entr and Unitech Power Systems will provide Nadara with insights to support procurement strategies and decision-making for the Bellrock Offshore Wind Farm. This support will be given as the project progresses towards further design, consenting and investment milestones.
According to Aker Solutions, Entr will draw on project execution experience and operational data. Unitech Power Systems will focus on electrical power engineering and system analysis to help define a robust, efficient and grid-compliant electrical architecture for the proposed scheme.
The combined work will inform a range of project and investment choices throughout the development process.
Nadara said that conducting comprehensive studies in the early phases is aimed at reducing risks related to cost overruns, schedule delay and technical uncertainties.
Aker Solutions Entr ocean and wind vice-president Dorthe Kirkeby said: “Floating offshore wind has a major role to play in the energy transition, and robust early stage design will be key to enabling projects to move forward with confidence.
“Early definition of the transmission system is essential to managing cost, schedule and technical risk on projects of this scale. Through Entr and Unitech Power Systems, we will combine project execution insight with deep electrical power engineering expertise to help identify a practical, optimised and future-ready concept for Bellrock.”
The contract scope also includes identifying procurement timelines and potential local supply chain involvement, reflecting ambitions to support the growth of the floating offshore wind sector in Scotland and the UK.
Nadara portfolio director David Robertson said: “This study is about making the right technical decisions early. By working with Entr and Unitech Power Systems, we are bringing together strong offshore project experience and specialist electrical engineering capability at a critical stage in Bellrock’s development.
“The work will help us assess the most robust and efficient transmission options, understand key cost and programme considerations, and build a stronger evidence base for future investment and procurement decisions.”
As part of Crown Estate Scotland’s ScotWind leasing round, the Bellrock Offshore Wind Farm is set to supply electricity equivalent to the needs of more than 1.7 million homes. The floating offshore wind project could offset more than 1.8 million tonnes of carbon dioxide emissions per year.
Its design is expected to feature up to 132 floating wind turbine generators, depending on turbine size, along with associated floating substructures, mooring lines, anchors, inter-array and export cabling, and offshore substations.
Power generated by the floating wind farm is set to be brought ashore between Findon and St Cyrus, with connection planned to SSEN Transmission’s Hurlie substation, west of Stonehaven in Aberdeenshire.
Further engineering work is continuing across both the offshore and onshore transmission infrastructure components, with ongoing surveys, site selection activities and stakeholder engagement.
A Section 36 Consent and Marine Licence application for the Wind Farm Development Area was submitted by Nadara through the project holding company, Bellrock Offshore Wind Farm, in April 2026.
