SUSE lands first Linux validation for SEAPATH grids

SUSE has validated and delivered its real-time Linux operating system for the LF Energy SEAPATH architecture, saying it is the first enterprise Linux vendor to do so.

The move places SUSE in a broader effort to modernise electricity substations through software-based systems rather than fixed hardware. SEAPATH is an open-source architecture for virtualised digital substations used to manage and distribute electrical power.

SUSE developed the integration with Savoir-faire Linux. The joint setup combines SUSE Linux Enterprise Real Time with KVM virtualisation and cluster support, giving utilities and equipment vendors an option for deploying software-defined substations as they update grid infrastructure.

Grid operators are under pressure to replace ageing systems as renewable energy sources and rising electricity demand put more strain on existing networks. Utilities have been shifting to software-defined designs to improve flexibility and reduce dependence on dedicated hardware platforms.

LF Energy created SEAPATH to support that transition. The framework is designed to provide a hardware-agnostic base for digital substations that require real-time performance for protection and automation tasks.

Performance test

Dutch grid operator Alliander carried out the initial validation. According to SUSE, its real-time kernel met latency requirements of less than 30 milliseconds, a threshold needed for high-voltage power grid protection.

That result matters because timing is central to the operation of virtualised substations. Protection systems must respond quickly to faults on the grid, and operators have been cautious about moving such functions from dedicated devices to software running on general-purpose hardware.

Major European transmission and distribution operators, including RTE in France and Alliander in the Netherlands, have been involved in the SEAPATH project. They have backed open-source software stacks as a way to reduce supply-chain risk and improve interoperability across grid systems.

SUSE's subscription offering for SEAPATH environments includes technical support, security maintenance and long-term lifecycle management. That could matter for utilities and industrial suppliers that need extended support periods for critical infrastructure deployments.

Frank Feldmann, Chief AI and Strategy Officer at SUSE, framed the development as part of a broader push for greater choice in grid technology.

"Power grids are among the world's most critical infrastructures, and their modernisation requires technologies that combine openness, reliability and long-term support," said Frank Feldmann, Chief AI and Strategy Officer at SUSE.

"By enabling SUSE Linux Enterprise Real Time for SEAPATH, we are giving transmission and distribution operators an additional enterprise-supported option for building software-defined substations. For European operators in particular, this provides a path to greater technological choice and control over critical infrastructure while supporting their digital sovereignty objectives," Feldmann said.

Ecosystem push

The development also expands the number of commercial implementations available around SEAPATH. For an open-source industrial architecture, broader vendor support can help operators avoid reliance on a single supplier while giving equipment makers a wider market base.

Eloi Bail, Chair of the LF Energy SEAPATH Technical Steering Committee, said SUSE's addition broadens the support options available to operators and vendors working on virtualised protection systems.

"Building a sustainable multi-vendor ecosystem is central to SEAPATH," said Eloi Bail, Chair of the LF Energy SEAPATH Technical Steering Committee.

"By integrating SUSE Linux Enterprise and evaluating it against the project's technical requirements and testing framework, SUSE is adding another implementation and support option for grid operators pursuing their virtualisation journey, as well as for protection and automation vendors bringing virtualised Intelligent Electronic Devices (IEDs) - essential components for grid protection and control - to the market. Expanding that choice is exactly what an open platform such as SEAPATH is intended to enable," Bail said.

Savoir-faire Linux has been involved in SEAPATH as a contributor and co-founder of the project. Its role in the SUSE integration points to the engineering work required to adapt general enterprise software for industrial systems with strict real-time and availability requirements.

Christophe Villemer, Executive Vice-President at Savoir-faire Linux, said the project aims to turn the reference architecture into systems that utilities and vendors can deploy.

"Our role at Savoir-faire Linux is to help technology providers and utilities turn the SEAPATH reference architecture into deployable industrial solutions," said Christophe Villemer, Executive Vice-President at Savoir-faire Linux.

"Working with SUSE, we brought together their enterprise Linux expertise and our deep knowledge of SEAPATH's real-time, high-availability and integration requirements. The result is an additional enterprise-supported option for the SEAPATH ecosystem and another step toward broader industrial adoption of virtualised protection and control," Villemer said.