FAB Link

FAB Link
Name	FAB Link
Type	High-voltage direct current interconnector
Status	Proposed / In development
Start	Saint-Brieuc
End	Pembrokeshire
Owner	National Grid plc; RTE (Réseau de Transport d'Électricité) partner proposals
Capacity	1,000–2,000 MW (proposed)
Length	~140–200 km (subsea and underground)
Dc voltage	±320 kV to ±525 kV (proposed range)
Construction cost	Estimates vary (€1–1.5 billion range cited in studies)

FAB Link FAB Link is a proposed high-voltage direct current (HVDC) subsea and underground electricity interconnector intended to link the transmission systems of France and Wales / United Kingdom. The project aims to facilitate cross-border electricity trade between RTE (Réseau de Transport d'Électricité) territory and National Grid ESO areas, support renewable integration from offshore wind and tidal resources, and provide capacity for balancing services across the European Network of Transmission System Operators for Electricity network. The initiative has attracted attention from energy companies, regional authorities, environmental groups, and regulators such as Ofgem and the Commission de régulation de l'énergie.

Overview

FAB Link is conceived as a bi-directional DC link connecting a converter station on the French Atlantic coast near Brittany to a converter station in Wales or South West England via subsea cables across the Celtic Sea and onshore ducts. The project proponents have emphasized benefits including enhanced security of supply for Great Britain, market coupling between France and the GB electricity market, and enabling exports of low-carbon generation from European Union and United Kingdom sources. FAB Link proposals have been considered alongside other interconnectors such as IFA-1, IFA-2, Eleclink, Greenlink (electrical interconnector), and North Sea Link, positioning the project within wider regional transmission planning and cross-border trading frameworks like the Integrated Single Electricity Market discussions and ENTSO-E coordination.

Technical Specifications

Design studies for FAB Link have explored using voltage-sourced converter (VSC) technology to provide controllable reactive power support and black-start capability. Proposed capacities reported in planning documents range from 1,000 MW to 2,000 MW, with bipolar DC voltages in the ±320 kV to ±525 kV window depending on conductor choice and thermal loading. Cable types under consideration include mass-impregnated (MI) and cross-linked polyethylene (XLPE) insulated subsea cables, with fiber-optic cores for telecommunications and protection signaling to National Grid plc and RTE. Converter station footprints would require high-voltage switchgear, harmonic filters, and cooling systems; potential suppliers referenced in industry analyses include Siemens Energy, GE Vernova, and Hitachi Energy. Grid connection studies coordinate with regional transmission system operators including National Grid ESO and RTE (Réseau de Transport d'Électricité) to assess steady-state and dynamic interactions with existing AC networks, stability constraints, and fault-ride-through requirements.

Route and Infrastructure

Routing proposals evaluated coastal landfall options near Saint-Brieuc, Brittany, and Welsh or English landfalls in Pembrokeshire or Somerset, with subsea corridors traversing the Bay of Biscay approaches and the Celtic Sea. Onshore infrastructure plans include buried high-voltage DC cables in ducts, converter stations sited to minimize visual impact, and access tracks coordinated with local planning authorities such as Pembrokeshire County Council and Conseil départemental des Côtes-d'Armor. The project requires surveys for seabed topology, geotechnical conditions, and archaeological potential overseen by agencies like Natural Resources Wales and Service national des fouilles archéologiques préventives. Interconnection points interface with regional transmission substations such as Bodelwyddan substation (example UK topology) and the French 225/400 kV grid nodes managed by RTE (Réseau de Transport d'Électricité).

Environmental and Regulatory Issues

Environmental impact assessments consider effects on marine habitats including reefs, seagrass, and species protected under the Habitat Directive and regional conservation designations like Special Areas of Conservation and Marine Protected Areas. Regulatory consent regimes involve planning consent in Wales and France, marine licensing overseen by Marine Management Organisation equivalents, and cross-border cooperation informed by the Convention on the Protection of the Marine Environment of the North-East Atlantic (OSPAR) Commission. Stakeholder engagement has involved local authorities, fishing communities represented by organizations such as the UK Fisheries Administrators and French professional fisheries federations, and conservation NGOs like Royal Society for the Protection of Birds and LPO (Ligue pour la Protection des Oiseaux). Noise, electromagnetic field, and cable burial depth mitigation measures are part of permits reviewed by Ofgem and French regulatory bodies.

Project History and Development

The FAB Link concept emerged from commercial and engineering feasibility studies in the 2010s, drawing interest from consortia including private investors and utilities seeking to expand interconnection capacity after projects like IFA-2 and North Sea Link. Key milestones include initial seabed surveys, environmental scoping reports filed with Ofgem and French authorities, and engagement with transmission operators National Grid ESO and RTE (Réseau de Transport d'Électricité). Political factors such as Brexit and evolving EU–UK electricity market arrangements influenced timelines, while shifts in European energy policy, the European Green Deal, and national decarbonization targets accelerated stakeholder scrutiny. Financing discussions have involved project finance models common to merchant interconnectors and regulated asset frameworks under scrutiny by the European Investment Bank and commercial lenders.

Economic and Operational Impact

If realized, the interconnector would enable price convergence between the French electricity market and the GB electricity market, potentially lowering wholesale volatility and providing ancillary services like frequency response and reserve capacity procured through platforms managed by National Grid ESO and RTE (Réseau de Transport d'Électricité). The project could facilitate export pathways for offshore wind projects in the Celtic Sea and balance intermittent generation from onshore wind and solar power in both countries. Economic modeling presented to regional governments forecasts job creation during construction and long-term benefits to energy security cited by Welsh Government and Ministry of Ecological Transition (France), though cost–benefit outcomes depend on regulatory arrangements, merchant revenue risk, and competing interconnector projects.

Category:Electric power transmission projects