Ofgem publishes its draft determination outlining funding for the electricity distribution utilities
British energy regulator Ofgem published its Draft Determinations under its RIIO-ED2 Performance-Based Regulation arrangements. These determinations cover Great Britain’s 14 distribution network operators (DNOs).
Ofgem is proposing to allow £20.9 billion (US$25.3 billion) of expenditure for investment over the five years from 2023 to 2028. This represents a 17% cut in the expenditure the DNOs previously proposed. However, it represents a substantial increase in the average expenditure compared to the present revenue period. This includes a 90% increase to £2.7 billion (US$3.3 billion) in investment for upgrading network infrastructure to increase capacity. This investment has been identified as critical to supporting the government’s net-zero goals. There is also a strong commitment to reduce the number and duration of interruptions through a combination of incentives and guaranteed standards to improve network reliability.
The determinations have been published for consultation. Final determinations are expected by the beginning of 2023.
Ofgem considers measures to support future response to storms – Storm Arwen brought severe winds to the U.K. in November 2021. This had a significant impact on the British electricity distribution networks and resulted in more than one million customers losing power. Approximately 40,000 customers were without supply for more than three days, and approximately 4,000 customers were left off supply for more than a week.
The British energy regulator has reviewed the utilities’ performance and has made a range of recommendations to improve future grid resilience. This includes development of proposals for an outcome-based resilience standard, a review of existing network-infrastructure standards, and a review of the guaranteed standard for severe weather. Under this guaranteed standard, distribution companies are required to compensate customers if their supplies are not restored within target timescales, typically 24 hours or 48 hours, depending on storm severity. Options Ofgem will consider include whether a compensation cap is still appropriate, the compensation payment structure, and whether the thresholds for different storm categories are appropriate.