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As the energy transition accelerates, electricity networks are being asked to do more than ever before. They must accommodate growing volumes of renewable generation, support the electrification of heat and transport, remain resilient to increasingly extreme weather and maintain stability in a system with fewer traditional sources of inertia. At CIGRE 2026, TNEI has been presenting six authored and co-authored papers exploring these challenges from multiple perspectives, spanning transmission and distribution networks, system planning, network operation, climate resilience and future power system stability. Together, the papers provide a snapshot of some of the most important questions facing network owners, system operators, policymakers and more as they plan for the decades ahead: How do we understand the combined impact of multiple climate hazards? How can network operators best use future climate scenarios? How do we maintain stability in future low-inertia power systems? How will reactive power behaviour change as distribution networks

TNEI has been appointed by Northwest Electric Power Design Institute Co., Ltd. (NWEPDI) to provide grid code compliance services for the Notsi Solar PV Project, a landmark renewable energy development in South Africa. Located near Senekal in South Africa’s Free State Province, the Notsi Solar PV Project is expected to deliver 475 MWac of renewable generation capacity, making it the largest planned single-phase solar project in the country to date. The project is being developed by Anthem and constructed by the Northwest Electric Power Design Institute (NWEPDI), a subsidiary of the China Power Engineering Consulting Group. Once operational, the project will supply clean electricity to commercial and industrial customers through long-term wheeling agreements, with offtakers including Discovery Green and NOA Group. As part of its appointment, TNEI will be responsible for delivering a comprehensive programme of grid code compliance services, including: Compliance studies Power system modelling Grid code testing RMS

We’re delighted to see Kilmarnock South Battery energy storage system (BESS) now operational. At 300 MW/600 MWh, the project represents a major milestone for the UK’s energy transition and we’re proud to have supported Zenobē throughout the planning and consenting process. As one of the UK’s largest battery storage projects, Kilmarnock South will play a vital role in strengthening the electricity network and enabling greater integration of renewable energy. Using advanced grid-forming inverter technology, the facility will provide critical grid stability services traditionally supplied by conventional fossil fuel power stations, helping to create a cleaner, more resilient and flexible energy system. The project’s impact is significant. By reducing renewable energy curtailment and supporting a more stable grid, Kilmarnock South is expected to prevent approximately 3.3 million tonnes of CO₂ emissions over its first 15 years of operation, making an important contribution to the UK’s net zero ambitions. Congratulations to the

New company status will support the next phase of growth for one of the industry’s longest-established power systems software providers. IPSA will now be a separate, standalone company from TNEI Services Limited and officially be known as IPSA Energy Solutions Limited (IPSA). The company will continue to be wholly owned by TNEI Group. The change reflects the company’s evolving role in the energy sector and its ambitions for continued growth in new and emerging markets. IPSA will continue to deliver the power system analysis software, expertise and support trusted by the energy industry for more than 50 years. During this time IPSA has earned a reputation as a trusted partner, helping organisations design, plan and operate reliable and resilient electrical networks. Gorby George, Director, of IPSA Energy Solutions Ltd commented: “Becoming IPSA Energy Solutions Limited is a natural evolution that better represents our role within today’s energy sector while preserving

TNEI has been working with Regen, National Grid Electricity Distribution and Energy Local on the Geoprint for Energy Club Connections and Operations (GECCO) project, exploring whether local energy balancing, the coordination of local generation and demand within a defined area, could make better use of existing grid capacity, reduce pressure on the network, defer costly reinforcement and unlock new renewable connections sooner. A key learning so far is that local balancing is not just a theoretical concept. Previous schemes have shown it can reduce network pressure, enable both new generation and new demand to connect and create measurable financial value. However, not every local supply or market model is relevant for GECCO’s aims. The project has so far reviewed different emerging UK local energy models and grouped them into broad categories, concluding that these models play different roles depending on how directly they interact with the grid and whether they

Last week, colleagues from across TNEI’s global offices came together in Lancaster for a two-day company away day focused on connection, collaboration and the future of the business. Hosted at Lancaster University, the event brought together teams from around the world for the Company Annual General Meeting (AGM), interactive workshops, a group environmental activity, and an evening celebration hosted by Team Africa, who this year is celebrating their 10th anniversary. The event opened with the Company AGM where the TNEI team was provided with an opportunity to reflect on progress, share updates and discuss the direction of the business. The session also saw some colleagues presented with long service acknowledgments celebrating a long career with TNEI – Johan Smith (10 years), Ewan Watson (10 years) and James Mackay (20 years) congratulations! Following the AGM, colleagues moved into a series of mixed-group workshop exercises designed to encourage collaboration and relationship-building across