Skip to main content
Skip to main content

Performance reporting - RIIO-ED1

As a regulated business our revenue is governed by a price control mechanism administered by Ofgem. The RIIO-ED1 price control period commenced in April 2015 and ended in March 2023. 

Our achievements within RIIO-ED1

Our accident rate 

has improved by 






provided with 



Frequency of 

power cuts  reduced by 




of customers affected 

by a HV fault had 

their supply

restored within

one hour 


Our business carbon 

footprint has reduced by 


compared to



Initiatives in 22/23 supported 


fuel poor customers 

to make annual

savings of 


Excellent performance 

for overall customer 

satisfaction throughout 

ED1 with a score of 


out of 10 

for 2022/23 

Regular engagement with

connection stakeholders, 


consulted in


Our business plan for the eight year period of RIIO-ED1 made a number of commitments across 6 categories, to see a brief overview of our performance in each area click on the icons below: 

We recognise that some stakeholders will wish to access more detail on our performance than others. We have therefore produced different formats of our reporting to enable individuals to choose the report type that best meets their requirements. 

We are keen to assess stakeholder views of our performance reporting for RIIO-ED1, we would therefore ask you to spare a minute of your time to complete a short survey.  Your feedback will be used to help us to improve reporting in future years.  To complete the survey please click here.

In addition to the above reports we are required to publish a copy of Regulatory Instructions and Guidance (RIGs) sheet SI1 for each of our licence areas.  SI1 forms part of the standard suite of reporting submitted to Ofgem on an annual basis.  The data contained within SI1 is replicated within the Performance Snapshot provided above but is published in compliance with Ofgem guidance.

You may be interested in...

Our RIIO-ED2 Business Plan

Our Business Plan sets out a view of our future and has been influenced by engagement with our stakeholders. 

Find out more

Ofgem SECV Incentive

Customer engagement is vital to continuously improve our connections services.

Find out more

Our Consultation Process

Our customers pay for all we do so have a right to expect a high standard of service and have confidence that we are delivering.

Find out more