Project Experience

ITHACA Energy – Cook Water Injection Project

JDR supplied a 925m thermoplastic production control umbilical for Ithaca Energy’s Cook Water Injection Project in the Central North Sea. This umbilical system connects the Cook Production Manifold to the Water Injection Tree, supporting reservoir pressure.

Hywind Tampen Offshore Wind Farm

JDR was selected to manufacture and supply 66 kV dynamic inter-array cables for the Hywind Tampen project. This project is the first in the world to power oil and gas platforms using floating offshore wind farms, presenting more technical challenges than traditional offshore wind farms with fixed foundations.

2.5 km of 66 kV dynamic inter-array cables connected 11 turbines in a loop, while two static export cables with dynamic ends, measuring 12.9 km and 16 km, were connected to the Snorre A and Gullfaks A platforms. The greater water depth (300 m) required cable accessories specifically designed to withstand higher water pressures. The cables were produced at JDR’s Bydgoszcz facility, and all cables and accessories were supplied from the Hartlepool plant, UK.

The wind power generated by the farm is expected to reduce emissions by 200,000 tonnes of CO₂ and 1,000 tonnes of NOx annually.

Hornsea Project Two

The South West Cluster of Hornsea Project Two consisted of 55 wind turbines and 1 offshore substation (OSS). It was the first project in the UK to use 66 kV inter-array cables.

A total of 110 km of 150 mm², 400 mm², and 630 mm² 66 kV cables were produced and delivered. These cables were equipped with JDR’s proprietary hang-offs and terminations, along with new, certified rigid cable repair joints, specifically designed to improve flexibility, enhance reliability, and reduce installation costs.

Offshore terminations were also supplied, and testing was carried out, including the installation of accessories and testing of the installed cables.

Once fully operational, the wind farm is expected to deliver clean energy to over 1.3 million homes.

IWOCS Supply and Service in the Gulf of Mexico

JDR signed a contract for the provision of IWOCS services for a deepwater project in the Gulf of Mexico. The contract, which began in February 2020, included the supply, installation, and maintenance of optical electrical downlines and integrated fibre optic conduits for eight wells, as well as IWOCS umbilicals, terminations, safety systems, and hydraulic power units (HPU). JDR also supplied additional technical specifications required to ensure the project could withstand significant deepwater pressures. IWOCS, winches, OEDL, HPU, flying leads, and other equipment were provided by JDR’s Houston, US office.

WindFloat Atlantic – First Application of 66kV Technology for Floating Offshore Wind

JDR was selected to provide cables for the WindFloat Atlantic project in Portugal, the world’s first to apply 66 kV dynamic cables for floating wind turbines. JDR’s cables connected the semi-submersible platforms, each hosting an 8.33 MW turbine, using a unique dynamic cable breakaway system.

The project marked an important milestone in floating offshore wind technology and high-voltage transmission for offshore renewable energy, further showcasing JDR’s expertise in pioneering innovative subsea cable solutions.

Neart na Gaoithe (NnG) Offshore Wind Farm

JDR designed and manufactured 105 km of 66 kV inter-array cables and 3.5 km of interconnector cable, including a range of cable accessories, which were delivered in 2021. The wind farm covered an area of approximately 105 km².

The project has the potential to generate 450 MW of renewable energy, enough to power 375,000 Scottish homes – more than the entire city of Edinburgh – and reduce over 400,000 tonnes of CO₂ emissions annually. The inter-array cables connected 54 turbines, while the 3.5 km interconnector cable linked the two offshore substations, enabling the flow of electricity between them.

The cables and accessories were assembled and manufactured at JDR’s production facility in Hartlepool, UK.

Na Kika A7 Well Project

In 2019, JDR supplied an IWOCS rental system for operations in the Gulf of Mexico, specifically for the Na Kika A7 well. Designed to work independently of the drilling riser, this system ensures resistance to strong subsea currents. The innovative design freed up valuable deck space, reduced installation time, and proved effective in challenging marine conditions. The system included a single-wire deployment solution and 15,000 psi control umbilicals, demonstrating JDR’s expertise in providing efficient and reliable subsea solutions for complex offshore projects.

Hohe See Offshore Wind Farm – 54.7km of Copper Core Inter-Array Cables

JDR supplied inter-array cables for the EnBW Hohe See offshore wind farm. The farm consisted of 71 wind turbines with a total capacity of 497 MW, covering an area of approximately 40 km² in the German Exclusive Economic Zone of the North Sea.

As part of the project, JDR delivered over 54.7 km of copper-core inter-array cables along with a range of accessories. The cables were manufactured at JDR's state-of-the-art facility in Hartlepool.

Once fully operational, the wind farm generated around 2 billion kWh of electricity annually, supplying 497 MW of power to 71 turbines. This energy powered approximately 560,000 homes and saved around 1.5 million tonnes of CO₂ each year.

Galloper Offshore Wind Farm – Powering 350,000 Homes

JDR was awarded a contract for the Galloper Offshore Wind Farm to supply 56 subsea inter-array cables, connecting 56 turbines to offshore substations. Located 27km off the Suffolk coast, the project will generate 353MW of renewable power. The cables were manufactured at JDR's Hartlepool and Littleport facilities.

Race Bank Offshore Wind Farm – Powering 400,000 Homes

JDR was selected to supply over 110km of 36kV inter-array cables for the Race Bank Offshore Wind Farm, located 27km off the Norfolk coast. This 580MW project, which will power 400,000 homes, includes a full range of subsea accessories designed and manufactured at JDR’s Hartlepool facility.

Hornsea One - Powering Over One Million Homes

JDR played a critical role in the Hornsea One Offshore Wind Farm, manufacturing and supplying 245 km of inter-array cables along with the necessary accessories. In addition to cable production, JDR provided installation and testing services, carried out by a dedicated team of 60 specialist technicians assigned to the project.

As the world’s largest offshore wind farm at the time of completion, Hornsea One set a new benchmark for renewable energy projects. With a total capacity of 1.2 GW, the wind farm is capable of powering over one million homes, highlighting JDR’s expertise in delivering cutting-edge subsea cabling solutions for large-scale offshore developments.