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Friday 16th October 2026
High-frequency distortion from Low Carbon Technologies (LCTs) such as EV chargers and heat pumps may fall outside current UK grid codes, and network operators have no consistent method for identifying or monitoring these emissions, with limited experience mitigating them. If unmanaged, this distortion could hinder decarbonisation by undermining network reliability and limiting further LCT deployment. Project HF-PQ Net will review existing practice, assess high-frequency distortion impacts on system assets, and define requirements for monitoring beyond the present accessible range. The project aims to improve power quality, support planning, and mitigate risks that could undermine grid resilience as LCT adoption increases.
The project will significantly enhance grid visibility by monitoring representative operating conditions and validating new power‑quality maintenance approaches under real‑world constraints. By measuring high‑frequency disturbances, the project will reveal hidden power-quality issues that would otherwise remain unresolved while preventing damaged customer equipment, reducing network inefficiencies, and reducing asset deterioration. Without these insights, operational costs rise, premature replacements occur, and long‑term financial pressure increases for both DNOs and consumers.
This project will generate previously unavailable datasets on high‑frequency distortion, enabling DNOs to address power‑quality issues precisely rather than relying on default reinforcement. This targeted approach reduces capital and operational expenditure by minimising reactive maintenance and avoiding premature asset replacement. Improved network visibility will enable better voltage control, lower technical losses, and prevent reactive interactions that distortion can aggravate. As a result, network reliability will increase through fewer outages and complaints, while planning and investment decisions become more efficient and better targeted.
When embedded as business‑as‑usual, monitoring high‑frequency distortions will deliver measurable benefits for electricity users. Earlier detection and intervention will reduce customer over‑consumption and prevent issues such as flickering lights, and appliance disruptions. Consumers with sensitive equipment will experience fewer nuisance trips and equipment damage which lower repair costs and fewer business interruptions. Overall, the project will decrease customer‑side losses, reduce complaint‑related costs, and offer stronger protection for vulnerable users.
With no standardised planning or operational frameworks beyond partially implemented G5/5 guidance, HF‑PQ Net will introduce new methods to identify and monitor high‑frequency disturbances. These processes will strengthen DNO planning capability, improve operational efficiency, and support power‑quality performance.
Environmental benefits include longer asset life, reduced waste, and lower carbon emissions.
Discovery funded, with project starting on 4th May 2026
Total Discovery costs: £ 115,694
SIF Discovery funding requested: £104,124
Start Date – 04 May 2026
End Date – 28 August 2026
Nyi Lin Htet
