- Back
- Who we are
- Electricity explained
- A net zero future
-
Industry information
- Back
- Home
- Industry information
- Connections
-
Balancing Services
- Back
- Industry information
- Balancing Services
- Future of balancing services
- Frequency response services
- Reserve services
- System security services
- Reactive power services
- Trading
- Settlements
- Balancing Mechanism Wider Access
- Electricity Operational Forum
- Electricity System Restoration Standard
- Power Responsive
-
Charging
- Back
- Industry information
- Charging
- Balancing Services Use of System (BSUoS) charges
- Transmission Network Use of System (TNUoS) charges
- Assistance for Areas with High Electricity Distribution Costs (AAHEDC)
- Connection charges
- Charging guidance
- Charging policy developments
- Charging statements
- Submit a charging query
-
Codes
- Back
- Industry information
- Codes
- Code changes: Beginner's Guide
- Connection and Use of System Code (CUSC)
- Grid Code (GC)
- System Operator Transmission Owner Code
- Security and Quality of Supply Standard (SQSS)
- Balancing Settlement Code (BSC)
- Digitalised Whole System Technical Code (WSTC)
- European Network Codes (ENC)
- Codes calendar
- About the Codes Team
-
Industry Data and Reports
- Back
- Industry information
- Industry Data and Reports
- System Performance Reports
- Balancing services performance monitoring report
- Data finder and explorer
- Forecast volumes and costs
- GB Electricity System Operator Daily Reports
- System balancing reports
- Monthly transmission loss data (4l)
- System constraints
- Voltage costs
- Keeping the lights on throughout coronavirus
- Accelerated Loss of Mains applications
- Our consultation responses
- Our strategy
- Research & publications
ESO
How we're performing under RIIO-2
From April 2021 new RIIO-2 price controls will determine the amount we can earn for the projects we deliver and the services we provide.
On this page, you will find our performance reports, which form part of our evaluative incentive scheme.
What is an evaluative incentive scheme?
Under the ESO’s evaluative incentive scheme, a Performance Panel scores how well we have delivered the objectives set out in our RIIO-2 business plan.
Our regulator, Ofgem, then converts these scores into a financial reward or penalty.
The RIIO-2 framework divides the ESO’s activities into three roles:
- Role 1: Control centre operations
- Role 2: Market development and transactions
- Role 3: System insight, planning and network development
The reports on this page perform part of the evaluation process, and provide a transparent summary of our activities.
Mid-year Incentives report
Our mid-year incentives report sets out what we have delivered over the period from April to September 2021.
Performance documents 2021-22
2021-22 Reporting
2021-22 Ofgem and ESO meeting minutes
How we report on our progress
The Performance Panel assesses our performance according to five criteria:
- Plan Delivery (completing the activities set out in the Delivery Schedule)
- Metric Performance (please refer to the metrics set out by Ofgem in annex 1 of the ESORI guidance)
- Stakeholder Evidence
- Demonstration of Plan Benefits
- Value for Money
In line with Ofgem’s ESORI guidance, we publish a report on this page every month. The reports vary in their contents and significance:
Monthly reports | Monthly (17th working day) | An update on monthly Metrics and Regularly Reported Evidence, and notable events. We also publish the minutes of our monthly performance meetings with Ofgem |
Quarterly reports | Q1: 17th working day of July Q3: 17th working day of January | In addition to the above, Quarterly reports also provide an update on quarterly Metrics and Regularly Reported Evidence. We also publish an updated Deliverables Tracker on a quarterly basis |
Mid- year reports | 17th working day of October | In addition to the above, Mid-year reports also provide an update on six-monthly Metrics and Regularly Reported Evidence, as well as information to support our performance in relation to Stakeholder Evidence, Demonstration of Plan Benefits, and Value for Money. |
Mid-scheme and End of scheme reports | 7 May | In addition to the above, these reports also provide an update on annual Metrics and Regularly Reported Evidence |
The Performance Panel scores the ESO’s performance every six months, and Ofgem will decide on our financial reward at the end of the two-year “Business Plan 1” period (in summer 2023).
Recent reports
RIIO-2 Deliverables Tracker
Download the Deliverables Tracker to see the latest status of the projects we're delivering under RIIO-2.
Download document
Previous documents
See all performance documents which support the evaluative incentive scheme which existed under the Forward Plan, which ran from 2018-21.
Previous documentsYou may also be interested in:
RIIO-2 business plan
Our ambitious RIIO-2 business plan, led by stakeholders, sets out the crucial role we will play in the transition to a zero carbon energy system. Find out more.
Forward Plan
Before RIIO-2, there was the Forward Plan. See historic documents from 2018-2021.
Stay up to date
Be the first to hear when a report is published and sign up for our Incentives alerts.