News

Part 4 of the TNEI Innovation series Nathanael Sims, Principal Consultant Building insight into tomorrow’s electricity network In Part 3 of the TNEI Innovation Series, we explored how the VoltMetric project is helping network operators gain greater visibility of voltage and power quality across their networks. In Part 4, Nathanael Sims, Principal Consultant at TNEI, looks at another important aspect of network insight: understanding how reactive power flows are changing as the energy system evolves. Through the Reactive Power Projections project, TNEI has worked with the National Energy System Operator (NESO) to develop a long-term projection methodology that could improve planning, support voltage management and help prepare Great Britain’s (GB) electricity system for the challenges of a changing generation and demand mix. What is the reactive power projections project? Reactive power may be less visible and talked about than active power, but it plays a critical role in maintaining voltage

From strategic discussions to graduate development It’s been an exciting week at TNEI, as colleagues came together for two key events focused on collaboration, learning and professional development. While some colleagues gathered in Manchester for an away day centred on business strategy and team engagement, graduates from across the business also participated in our annual graduate day programme, connecting both in person and remotely from around the world. Together, the events showcased TNEI’s commitment to bringing people together, sharing knowledge and investing in the future of our business. Colleagues gather in Manchester for strategy and collaboration This week, colleagues came together in Manchester for an away day designed to reflect on progress, strengthen connections and discuss future priorities. The day included a state of the nation update, interactive group exercises and discussions focused on business strategy and how we can best support the ever changing energy market. Attendees also had

Part 3 of the TNEI Innovation series Gruffudd Edwards, Principal Consultant Turning network data into actionable insight In part 2 of the TNEI Innovation series, we explored how future offshore networks could support system stability and resilience on the transmission network. In part 3, Gruffudd Edwards (Principal Consultant) turns attention to the low-voltage (LV) network, where increasing electrification is presenting some challenges, including voltages that are occasionally higher than statutory limits, lower than them, or in some cases both higher and lower at different times. The impact of voltage fluctuations Low voltage Low voltages can occur because the presence of EV chargers and heat pumps can create loads on LV networks that are significantly larger, and more closely matched in their timing, than was envisioned when the distribution networks were designed. The consequences of low voltages that customers tend to notice include: Lights dimming or flickering Heat pumps or electric

Supporting the expansion of Coventry’s heat network TNEI has successfully secured planning permission for the expansion of Coventry’s heat network, marking a significant milestone for the company’s growing work in low carbon energy infrastructure. The project demonstrates TNEI’s ability to support complex energy infrastructure projects through the planning process. Working on behalf of Coventry District Energy Company Limited, TNEI supported a planning application to install seven new connections to the city’s existing heat network, linking a range of community facilities across the Hillfields area, including schools and healthcare buildings. The expanded network will provide these buildings with access to lower-carbon heat through Coventry’s established district heating system. Operated by Bring Energy, the network uses heat recovered from the city’s Energy from Waste facility, helping to reduce carbon emissions and support Coventry’s journey towards greener energy. The project presented a unique planning challenge. The proposed development is located within a densely

Part 2 of the TNEI Innovation series Mohamed Galeela, Principal Consultant Supporting system stability through offshore innovation In the first article of the TNEI Innovation Series, we explored how the SIF BLADE project is investigating the role offshore wind could play in future electricity system restoration. In Part 2, Mohamed Galeela, Principal Consultant at TNEI, examines how future offshore high voltage direct current (HVDC) networks could move beyond power transfer and actively contribute to system stability, resilience and restoration. Through the UK-US collaborative project, Strategic Advancements in Offshore Multi-Terminal DC Networks (MTDC) for Enhanced System Services, TNEI is helping to investigate the technologies and control approaches that could support the next generation of offshore energy infrastructure. What is the MTDC Project? The MTDC project is a UK-US research collaboration (see Figure 1) investigating the technical requirements for future Multi-Terminal DC (MTDC) networks connecting offshore wind farms. TNEI and Cardiff University

Recognising industry leadership and emerging talent TNEI colleagues in South Africa were recognised at the South African Wind Energy Association (SAWEA) Industry Awards during Windaba 2026. Zoë Lincoln (Principal Consultant) received the Watt-a-Woman Leadership Award and Werner de Wet (Technical Consultant) was recognised as a finalist in the Bright Spark Award category. The recognition came during a busy week at Africa’s leading wind energy conference and exhibition, where TNEI was actively involved in industry discussions on some of the sector’s most important challenges and opportunities. As part of the conference programme, Zoë Lincoln, participated in a panel discussion alongside representatives from the System Operator and other industry experts. The session explored the treatment of different independent power producer (IPP) facilities during curtailment events and the growing role of curtailment in a high-renewables power system. The discussion coincided with the announcement of a new Section 34 determination for the procurement of