Here you can access data and reports on what network companies have delivered for consumers, and their performance under our network price controls.
The network in numbers
Our price controls have brought lots of benefits to consumers:
- Under our regulation, companies must share any savings they’ve made during the price control period with consumers. Since the start of our ‘RIIO’ price control framework in 2013, over £6 billion has been clawed back across all networks through reduced revenues or voluntary contributions from network companies.
- Around £78 billion has been invested by electricity networks since privatisation, helping to connect cleaner sources of energy and maintain high levels of reliability.
- Reliability has improved – power cuts are now half the EU average and reliability of the electricity and gas grids is >99.9%.
- Customer satisfaction with local network companies has improved significantly since they were privatised. In 2018/19 the scores averaged 8.8 out of 10 for gas network companies and 8.9 out of 10 for electricity network companies when customers were asked how satisfied they were with the service they receive. This includes restoring supplies after power cuts or gas interruptions, building new grid connections and answering general queries.
- Since 2008 our fuel poor network extensions scheme has connected over 120,000 homes to the gas grids, giving them access to cheaper sources of heating.
- Greater innovation, including using robots to fix gas mains and smart technology gadgets which reduce strain on the networks at times of high demand, are driving down costs for consumers.
Annual performance reports
We publish an annual report based on reported performance from the network companies for each year of a price control:
- Annual report 2018/19 (RIIO-ET1) – covering the electricity transmission price controls running 2013 to 2021.
- Annual report 2018/19 (RIIO-GT1) – covering the gas transmission price controls running 2013 to 2021.
- Annual reports 2018/19 (RIIO-GD1) – covering gas distribution price control running 2013 to 2021.
- Annual reports 2018/19 (RIIO-ED1) – covering electricity distribution price control running 2015 to 2023.
- Regulatory finance annex 2018-19
- View all annual reports
What do network companies report on?
Companies are required to report on their expenditure against their allowance in the price controls, alongside tough output targets covering:
- Reliability: improving network reliability and reducing the number and duration of power interruptions.
- Connections: providing a better service for customers wanting to connect to the network.
- Customer service: delivering good customer service and listening to stakeholders.
- Social obligations: doing more to help vulnerable customers, particularly during power interruptions.
- Environmental targets: reducing carbon emissions and other environmental impacts.
- Safety: funding the network so it remains safe and meets Health and Safety Executive standards.
Network cost trends
In 2018-19, around a fifth (£281) of an average household energy bill (£1,184 - dual fuel, typical consumption) went towards running and maintaining the network.
Network costs vary, reflecting changes in energy use and how much it costs to transport gas or electricity to the region you are in.
Interactive performance data
We publish interactive charts and data on key network monitoring themes on the Ofgem Data Portal. These cover information about the financial performance of the networks. They include the forecast rate of return for each company and their actual spending compared with their allowance in their price control agreements.