INDUSTRY NEWS Offshore Electrification: Strengthening the


Safety Framework for Subsea Power Cables By Rob Langford, Vice President, Global Offshore Renewables, ABS


As offshore energy systems expand in scale and complexity, subsea power cables are emerging as both critical enablers and key points of vulnerability. New technical guidance from ABS is designed to address a growing gap between existing standards and the performance demands of modern offshore electrification.


The innovative SCA solution has been developed specifically to support 50Hertz’s offshore and onshore electricity grid infrastructure, which ensures safe and reliable transmission of high-voltage power to homes and businesses across the north and east of Germany.


Subsea activity is accelerating. Deepwater and ultra-deepwater oil and gas developments alone are expected to drive more than $42 billion in spend between 2024 and 2027. At the same time, offshore wind, carbon capture and storage (CCS), and cross-border interconnectors are adding further demand to an already constrained subsea supply chain. Cost pressures, limited installation capacity and increasing regulatory requirements are now widely recognised as core industry challenges.


Within this environment, subsea power cables are under increasing


technical strain. Projects are moving to higher voltages, longer step- out distances and deeper water, while system architectures become more complex. This places greater emphasis on robust engineering across the full cable lifecycle, from design and manufacture through to installation, commissioning and long-term operation.


Despite their critical role, subsea cables remain a leading source of operational risk. In offshore wind, cable failures are consistently identified as one of the primary drivers of insurance claims and unplanned downtime. Installation-related damage, such as over-bending, poor handling and inadequate seabed protection, remains a dominant failure mode. External factors including anchor interaction, extreme environmental loading and insufficient burial depth further increase exposure.


Floating offshore wind introduces an additional layer of complexity. Unlike fixed-bottom systems, floating assets are subject to continuous motion, requiring dynamic cable sections capable of accommodating cyclic loading over extended operational lifetimes. These cables oſten configured in “lazy wave” geometries, must balance mechanical resilience with electrical performance, placing stringent demands on fatigue design, bending control and installation accuracy.


Addressing these challenges requires 20 www.sosmagazine.biz April Issue 2026


a structured, lifecycle-based approach. ABS’s Technical Standard for Subsea Power Cables has been developed to provide a clear framework for design, verification, installation and operational integrity. The guidance consolidates best practices and sets out technical expectations to support consistency, safety and performance across subsea cable projects.


ABS draws on more than 70 years of offshore experience, spanning deepwater oil and gas and the evolution of floating wind. This includes certification of the first U.S. offshore wind project at Block Island and involvement in major floating wind developments such as WindFloat and Kincardine. Ongoing collaboration with industry – ranging from floating wind safety frameworks to digital monitoring technologies – continues to inform the development of robust technical standards.


As offshore electrification accelerates, subsea power cables will play an increasingly central role in system reliability. Failures carry significant operational and financial consequences, making design discipline and lifecycle management critical.


Establishing clear, technically grounded standards is therefore essential. By providing structured guidance across the cable lifecycle, ABS’s framework supports safer, more reliable subsea power systems as offshore energy moves into deeper, more demanding environments.


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