Energy network indicators

Our network indicators

Each year, network companies must report on their performance and outputs under Ofgem’s RIIO (Revenue = Incentives + Innovation + Outputs) network price controls. To ensure value for money for consumers, the price controls limit the amount by which network costs can rise and stipulate levels of performance. These network indicators give a snapshot of our monitoring.

These market indicators and data are not intended for use or to be relied on for any commercial purposes. View copyright and disclaimer

If you have feedback on the indicators, please contact us. 

What do the network companies report on?

The RIIO price controls are designed to encourage network companies to play a full role in delivering a sustainable energy sector, and to do so in a way that brings consumers value for money. Under RIIO, each company has to deliver and report on a range of outputs:

  • Reliability: We expect companies to improve network reliability and reduce the number and duration of power interruptions.
  • Connections: Companies will provide a better service for customers wanting to connect to the network.
  • Customer Service: We incentivise companies to deliver good customer service and listen to stakeholders.
  • Social Obligations: Companies will do more to help vulnerable customers, particularly during power interruptions.
  • Environmental: Companies must reduce their carbon emissions and other environmental impacts.
  • Safety: Companies are funded to ensure the network remains safe and meets Health and Safety Executive standards.

All electricity transmission charts and data (RIIO-T1)

There are . They operate the high voltage network carrying electricity across GB. 

The RIIO-T1 price control runs from 1 April 2013 to 31 March 2021. The data presented here gives a snapshot of the network owners’ financial performance and their performance against key RIIO-T1 outputs for consumers.

All electricity distribution charts and data (RIIO-ED1)

There are , owned by six ownership groups. They operate the low voltage electricity network, taking energy from the transmission system to homes and businesses.

The RIIO-ED1 price control runs from 1 April 2015 to 31 March 2023. The data presented here gives a snapshot of the network owners' financial performance and their performance against key outputs for consumers.

All gas transmission charts and data (RIIO-T1)

 is responsible for operating the high pressure transmission of gas across GB.

The RIIO-T1 price control runs from 1 April 2013 to 31 March 2021. The data presented here gives a snapshot of their financial performance and performance against key outputs for consumers.

All gas distribution charts and data (RIIO-GD1)

There are , owned by four ownership groups. They operate the local gas networks, taking energy from the gas transmission system to homes and businesses.

The RIIO-GD1 price control runs from 1 April 2013 to 31 March 2021. The data presented here gives a snapshot of the network owners' financial performance and their performance against key outputs for consumers.