National Grid ESO

National Grid Electricity System Operator (ESO) is the transmission system operator, working to balance supply and demand in real time, as well as coordinating markets and auctions which ensure sufficient future supply, and exploring initiatives such as demand-side response measures to reduce peaks in electricity demand.

Available Datasets

Title Format(s) Updated

Interconnector Requirement and Auction Summary Data

National Grid ESO (NGESO) trades on interconnectors to adjust the flow of electricity into or out of Great Britain to help manage system issues such as Rate Of Change Of Frequency (ROCOF), thermal constraints...

1 ESO

Auction   Bid   Bidding   Britned   Gtma   Ic   Ifa   Ifa2   Interconnector   Nemo   Powerbi   Requirement   Sch7a   Schedule 7a   Subscribable   Trades   Trading

CSV 2023-02-15

Day Ahead Wind Forecast

The dataset contains national wind forecast over a day ahead timescale as well as all historic day ahead wind forecasts to assist the industry to make efficient decisions in balancing their supply and demand positions.

2 ESO

Day-ahead   Demand   Forecast   Metered   National   Subscribable   Wind

CSV 2023-02-15

Short Term Operating Reserve (STOR) Day Ahead Auction Results

As part of Clean Energy Package (CEP) 6.9 we will be running daily auction for procurement of Short Term Operating Reserve (STOR). The daily results from the auction are available here.

1 ESO

Cep 6.9   Day Ahead   Day Ahead Results   Powerbi   Results   Stor   Subscribable

CSV 2023-02-15

National Carbon Intensity Forecast

This dataset contains national carbon intensity forecast for the GB electricity system. The carbon intensity of electricity is a measure of how much CO2 emissions are produced per kilowatt hour of electricity consumed.

1 CC-BY-4.0

Carbon   Co2   Forecast   Intensity   National   Subscribable

CSV 2023-02-15

Country Carbon Intensity Forecast

This dataset contains country carbon intensity forecast for the GB electricity system.The carbon intensity of electricity is a measure of how much CO2 emissions are produced per kilowatt hour of electricity consumed.

1 CC-BY-4.0

Carbon   Co2   Country   Forecast   Intensity   Subscribable

CSV 2023-02-15

Current Balancing Services Use of System (BSUoS) Charges

There is a file for each run type we calculate a BSUoS charge for - Interim Initial (II), Settlement Final (SF) and Reconciliation Final (RF). These are updated daily with the actual Half Hourly BSUoS price....

7 ESO

Balancing   Bsuos   Charging   Services   Subscribable

CSV XLSX 2023-02-15

Day Ahead Constraint Flows and Limits

A snapshot of the limits and flows at relevant boundaries at day ahead stage. These flow values are true for when the measurement was taken and will not reflect any changes in the flows following the...

3 ESO

Constraint   Day-ahead   Diagrams   Flow   Forecast   Limit   Network   Subscribable

CSV PDF 2023-02-15

Transmission Entry Capacity (TEC) Register

A list of projects that hold contracts for Transmission Entry Capacity (TEC) with us. These include existing and future connection projects and projects that can be directly connected to the National...

1 ESO

Connection   Register   Subscribable   Tec

CSV 2023-02-15

Balancing Services Adjustment Data (BSAD) Forward Contracts

Balancing Services Adjustment Data (BSAD) is used to submit balancing actions to the Balancing & Settlement Code (BSC), which defines the rules and governance for the balancing mechanism and imbalance...

7 ESO

Adjustment   Ancillary   Balancing   Bsad   Cost   Service   Subscribable

CSV 2023-02-15

Dynamic Containment 4 Day Forecast

The dataset contains forecasts of our Dynamic Containment Low and High requirements for the next 4-days. The methodology uses forecasted demand, inertia, and response volumes as well as a view of the largest...

2 ESO

Dc   Dch   Dcl   Dynamic Containment   Forecast   Response   Subscribable

CSV 2023-02-15

Regional Carbon Intensity Forecast

This dataset contains regional carbon intensity forecast for the GB electricity system.The carbon intensity of electricity is a measure of how much CO2 emissions are produced per kilowatt hour of electricity consumed.

1 CC-BY-4.0

Carbon   Co2   Forecast   Intensity   Regional   Subscribable

CSV 2023-02-15

Balancing Services Charging Report (BCR)

The Balancing Services Charging Report (BCR) provides a breakdown of the Balancing Services Use of System (BSUoS) charge. There is a BCR for each run type we calculate a BSUoS charge for - Interim Initial...

745 ESO

Balancing   Bsuos   Charging   Report   Services   Subscribable

ZIP 2023-02-15

Dynamic Containment, Regulation and Moderation Auction Results

From the 15th September 2021, the auction is run via the EPEX platform. The below files - DC, DR & DM Block Orders Master Data, DC, DR & DM Results by Unit Master Data , DC, DR & DM Results Summary Master Data...

5 ESO

Ahead   Containment   Data   Day   Dynamic   Subscribable

CSV 2023-02-15

Daily Balancing Services Use of System (BSUoS) Forecast

This file contains the Electricity System Operator's (ESO) half-hourly BSUoS forecast (Balancing Services Use of System charge). The estimated BSUoS charge is calculated by taking the forecast half-hourly...

5 ESO

Bsuos   Daily   Forecast   Subscribable

CSV 2023-02-15

Interconnector Register

A list of interconnector projects that hold connection contracts with NGESO. These include active interconnectors and future interconnector projects. **Note**: The Mega Watt (MW) Total MW Import figures...

1 ESO

Connection   Interconnector   Register   Subscribable

CSV 2023-02-15

System Operating Plan (SOP)

As part of our daily planning processes within the ESO control room, the control room strategy team produces a System Operating Plan (SOP) at key demand peaks or troughs throughout the day, at what we call a...

8 ESO

Sop   Subscribable   System Operating Plan

CSV PDF ZIP 2023-02-15

Upcoming Trades

In order to meet forecast Electricity System Operator (ESO) balancing requirements at minimum cost, ESO trades energy-related products. This dataset displays all upcoming electricity trades due to be delivered...

1 ESO

Balancing   Energy   Subscribable   System   Trades

CSV 2023-02-15

Embedded Wind and Solar Forecasts

Electricity System Operator (ESO) publishes at a half-hourly resolution the embedded (refer to embedded document for definition) wind and solar forecast from within day up to 14 days ahead. This forecast gets...

2 ESO

Embedded   Forecast   Generation   Powerbi   Solar   Subscribable   Wind

CSV DOC 2023-02-15

Day Ahead Demand Forecast

This dataset contains national electricity demand forecast for day ahead as well as all historic day ahead demand forecasts. The forecast assist the industry to make efficient decisions in balancing their...

3 ESO

Day-ahead   Demand   Forecast   National   Subscribable

CSV PNG 2023-02-15

System Inertia

This dataset contains an estimate of the outturn inertia and market provided inertia for Great Britain Transmission System.

6 ESO

Inertia   Subscribable   System   Transmission

CSV 2023-02-15

Historic Demand Data

This section contains historic electricity demand, interconnector, hydro storage pumping, Non-BM Short Term Operating Reserve (STOR), wind and solar outturn data. >**Note**: We are currently investigating the...

16 ESO

Demand   Historic   Interconnectors   Outturn   Solar   Subscribable   Wind

CSV DOC 2023-02-15

Historic GTMA (Grid Trade Master Agreement) Trades Data

This dataset contains data for historic GTMA (Grid Trade Master Agreement) trades conducted since April 2015. The data includes the trade ID, start and end time and date, the volume in MW, the price in £/MWh...

9 ESO

Agreement   Data   Grid   Gtma   Historic   Master   Sch7a   Schedule 7a   Subscribable   Trade   Trades   Trading

CSV 2023-02-15

Daily Operational Planning Margin Requirement (OPMR)

When assessing and publishing generation availability information against system requirements, Electricity System Operator (ESO) includes an Operational Planning Margin Requirement (OPMR) above the demand...

1 ESO

Daily   Forecast   Generation   Margin   Opmr   Powerbi   Reserve   Subscribable

CSV 2023-02-15

Historic Generation Mix & Carbon Intensity

This dataset contains data from the 1st of Jan 2009. It has seasonal decomposition applied to correct missing or irregular data points. The carbon intensity of electricity is a measure of how much Carbon...

1 CC-BY-4.0

Generation   Historic   Mix   Subscribable

CSV 2023-02-15

2 Day Ahead Demand Forecast

This dataset contains national electricity demand forecast for 2 days ahead as well as all historic 2 day ahead demand forecasts. The forecast assist the industry to make efficient decisions in balancing their...

3 ESO

2 Day Ahead   Demand   Forecast   National   Subscribable

CSV PNG 2023-02-15

Demand Data Update

This publication is similar to "Historic Demand Data" dataset but updated on a daily basis with approximately ten days lag in receiving settlement data. In the dataset embedded forecast for the upcoming next 7...

2 ESO

Embedded   Forecast   Historic   Interconnectors   National Demand   Solar   Subscribable   Total System Demand   Tsd   Wind

CSV DOC 2023-02-15

Aggregated Balancing Services Adjustment Data (BSAD)

Balancing Services Adjustment Data (BSAD) is used to submit balancing actions to the Balancing & Settlement Code (BSC), which defines the rules and governance for the balancing mechanism and imbalance...

9 ESO

Adjustment   Ancillary   Balancing   Bsad   Cost   Service   Subscribable

CSV 2023-02-15

Non-BM Ancillary Service Dispatch Platform (ASDP) Instructions

The Electricity System Operator (ESO) publishes Non-BM Instruction data from its Ancillary Services Dispatch (ASDP) System. This is published near real time publishing data from ASDP every 30 seconds. A new...

32 ESO

Ancillary   Dispatch   Instrictions   Non-bm   Platform   Service   Subscribable

CSV 2023-02-15

Daily & Weekly NRAPM (Negative Reserve Active Power Margin) Forecast

This dataset contains NRAPM (Negative Reserve Active Power Margin) forecast for Daily 2-14 days ahead and Weekly for 2-52 weeks ahead for both National and Scotland. The purpose of the NRAPM forecast is to...

4 ESO

Daily   Forecast   Margin   Nrapm   Subscribable   Weekly

CSV 2023-02-15

2-14 Days Ahead Demand Forecast

This dataset contains national electricity demand forecasts for 2-14 days ahead (medium term) as well as all historic 2-14 days ahead forecasts. These forecasts assist the industry to make efficient decisions...

3 ESO

2-14   Demand   Forecast   Medium   National   Subscribable   Term

CSV 2023-02-15

Carbon Intensity of Balancing Actions

The carbon intensity of balancing actions measures the difference between the carbon intensity of the combined Final Physical Notice (FPN) of machines in the Balancing Mechanism (BM) and the equivalent profile...

2 ESO

Actions   Balancing   Carbon   Intensity   Subscribable

CSV PDF 2023-02-15

Super Stable Export Limit Contract Enactment

Super Stable Export Limit (SEL) is utilised to directly decrease the sum of the minimum MW level or SEL of generators synchronized to the system by lowering the minimum generating level at a generator...

3 ESO

Contract   Cost   Downward Regulation   Energy   Generation   Reserve   Subscribable   Super Sel   Synchronisation

CSV 2023-02-15

System Inertia Cost

This data set gives indicative values for the average daily price (in £ per GVAs) for BM accepted offers tagged as being for System Inertia. The tagging process identifies the most likely main reason for a...

6 ESO

Inertia   Subscribable   System Inertia   Transmission

CSV 2023-02-15

Weekly Wind Availability

This publication displays the Electricity System Operator’s (ESO) wind generator availability in megawatt (MW) at a generator level at a weekly resolution for 2-52 weeks ahead.

1 Other (Public Domain)

Availability   Generator   Subscribable   Weekly   Wind

CSV 2023-02-15

Embedded Register

A list of connected or contracted to connect embedded generation projects in Scotland.

1 ESO

Connection   Embedded   Register   Subscribable

CSV 2023-02-15

Disaggregated Balancing Services Adjustment Data (BSAD)

Balancing Services Adjustment Data (BSAD) is used to submit balancing actions to the Balancing & Settlement Code (BSC), which defines the rules and governance for the balancing mechanism and imbalance...

10 ESO

Adjustment   Ancillary   Balancing   Bsad   Cost   Service   Subscribable

CSV 2023-02-15

Daily Wind Availability

This publication displays the Electricity System Operator’s (ESO) wind generator availability in megawatts (MW) at a daily resolution for 2-14 days ahead.

1 Other (Public Domain)

Availability   Daily   Subscribable   Wind

CSV 2023-02-15

14 Days Ahead Wind Forecasts

This dataset provides incremental updates for 0-14 days ahead wind forecasts at half hourly level. The forecast assist the industry to make efficient decisions in balancing their supply and demand positions.

1 ESO

Forecast   Medium   Subscribable   Term   Wind

CSV 2023-02-15

7 Day Ahead Demand Forecast

This dataset contains national electricity demand forecast for 7 days ahead as well as all historic 7 day ahead demand forecasts. The forecast assist the industry to make efficient decisions in balancing their...

3 ESO

7 Day Ahead   Demand   Forecast   National   Subscribable

CSV PNG 2023-02-15

NemoLink - NGESO's Network Transfer Capacity

These are the values System Operators use to restrict the maximum import and export Interconnector flows. These values are submitted in MW per GMT hourly time period. >**NOTE:** Values will only be published...

70 ESO

Nemo Link   Net Transfer Capacity   Network Transfer Capacity   Ntc   Subscribable

CSV 2023-02-15

Balancing Services Contract Enactment

National Grid ESO procures [balancing service contracts](https://www.nationalgrideso.com/balancing-services/list-all-balancing-services) to balance demand and supply and to ensure the security and quality of...

5 ESO

Balancing Services   Constraint   Contract Enactment   Fixed Price   Power   Reactive   Subscribable   Voltage

CSV 2023-02-15

Short Term Operating Reserve (STOR) Day Ahead Buy Curve

As part of Clean Energy Package (CEP) 6.9 we will be running daily auction for procurement of Short Term Operating Reserve (STOR). The Buy Curve used in the daily assessment process is available here.

2 ESO

Buy   Buy Curve   Cep 6.9   Curve   Stor   Subscribable

CSV TXT 2023-02-15

Weekly Operational Planning Margin Requirement (OPMR)

When assessing and publishing generation availability information against system requirements, Electricity System Operator (ESO) includes an Operational Planning Margin Requirement (OPMR) above demand forecast...

1 ESO

Forecast   Generation   Margin   Opmr   Reserve   Subscribable   Weekly

CSV 2023-02-15

North Sea Link - NGESO's Network Transfer Capacity

These are the values System Operators use to restrict the maximum import and export Interconnector flows. These values are submitted in MW per GMT hourly time period. >**NOTE:** Values will only be published...

121 ESO

Net Transfer Capacity   Network Transfer Capacity   North Sea Link   Nsl   Ntc   Subscribable

CSV 2023-02-14

Demand Flexibility Service: Test Events

The Demand Flexibility Service (DFS) has been developed to allow the ESO to access additional flexibility when the national demand is at its highest – during peak winter days – which is not currently...

4 ESO

Demand   Flexibility   Sms   Subscribable   Test

CSV 2023-02-14

Dynamic Moderation Requirements

This dataset will contain our forecasted requirements for Dynamic Moderation. For an initial period, we will validate the performance of the products on the live system during which time the volume we can...

1 ESO

Dynamic Moderation   Forecast   Requirments   Subscribable

CSV 2023-02-12

Dynamic Regulation Requirements

This dataset will contain our forecasted requirements for Dynamic Regulation. For an initial period, we will validate the performance of the products on the live system during which time the volume we can...

1 ESO

Dynamic Regulation   Forecast   Requirments   Subscribable

CSV 2023-02-12

Week Ahead Overnight Voltage Requirement

The number of voltage machine required for a given voltage group for upcoming weekend and following Monday to Friday. Given the complexity and locational nature of the voltage requirement, the actual...

4 ESO

Constraint   Group   Last Updated   Management   Note   Subscribable   Units   Voltage

CSV PDF 2023-02-11

Dispatch Transparency

This dataset is a component of the Forward Plan 2020-21 commitment to increase the transparency of our operational decision making in the Balancing Mechanism (BM). It includes the publication of actions taken...

4 ESO

Balancing   Bm   Boa   Dispatch   Dispatch Transparency   Mechanism   Operational   Subscribable   Transparency

CSV PDF PNG 2023-02-11

Constraint Breakdown Costs and Volume

The publication consists of constraint breakdown information to provide additional transparency of why as ESO we are taking actions on the system. Please note that tags applied to actions can occasionally be...

6 ESO

Contstraints   Costs   Daily   Inertia   Rocof   Subscribable   Thermal   Voltage   Volumes

CSV 2023-02-10

Monthly Balancing Services Summary (MBSS)

The Monthly Balancing Services Summary (MBSS) gives the costs and volumes of balancing services used by the Electricity System Operator. These costs are broken into individual months in the past financial...

103 ESO

Ancillary   Balancing   Constraints   Mbss   Monthly   Reserve   Services   Stor   Subscribable   Trades

CSV PDF XLSX 2023-02-10

GIS Boundaries for GB Generation Charging Zones

This dataset contains approximate GIS (geographic information system) geospatial boundaries for each of the TNUoS generation zones in Great Britain. There are 27 TNUoS generation zones, and each is associated...

2 Other (Public Domain)

Generation   Generations Zones   Gis   Shape Files   Subscribable

GEOJSON ZIP 2023-02-10

Thermal Constraint Costs

Thermal constraints are taken when the amount of energy that would flow naturally from one region to another exceeds the capacity of the circuits connecting the two regions. This dataset provides outturn...

7 ESO

Constraints   Costs   Diagrams   Network   Outturn   Subscribable   Thermal

CSV PNG XLSX 2023-02-10

Long Term (2-52 weeks ahead) National Demand Forecast

This dataset contains incremental updates for 2-52 weeks ahead demand forecast. The forecast assist the industry to make efficient decisions in balancing their supply and demand positions.

1 ESO

2-52   Cardinal   Demand   Forecast   Long Term   National   Point   Subscribable   Weeks Ahead

CSV 2023-02-10

Transmission Losses

There are a number of factors which influence transmission losses. These include variations in zonal generation patterns, growth in northern vs southern generation, level of Scottish exports to England and...

2 ESO

Losses   Subscribable   Transmission

CSV 2023-02-10

Transmission Network Use of System (TNUoS) Tariffs

This dataset contains a breakdown of all the Transmission Network Use of System (TNUoS) tariff elements of which are forecasted and set by the revenue team at National Grid ESO. These files will be updated on...

7 ESO

Charging   Demand   Demand Residual Banded Charges   Embedded   Export   Generator   Revenue   Subscribable   Tarifs   Tnuos

CSV 2023-02-10

24 Months Ahead Constraint Limits

This dataset contains Mega Watt constraint limits for the main boundaries on the transmission system on weekly bases for 24 months ahead.

3 ESO

Constraint   Limits   Scotex   Ssharn3   Subscribable

CSV PDF 2023-02-10

Daily Balancing Services Use of System (BSUoS) Cost Data

The BSUoS charge recovers the cost of day-to-day operation of the transmission system. Generators and suppliers are liable for these charges, which are calculated daily as a flat tariff for all users....

6 ESO

Balancing   Bsuos   Cost   Daily   Historical Balancing   Subscribable

CSV 2023-02-10

Year Ahead Constraint Limits

This dataset contains a year ahead Mega Watt constraint limits for the main boundaries on the transmission system. >**NOTE:** This dataset has now been replaced by the "24 Months Ahead Constraint Limits"...

1 ESO

B6   Constraint   Constraints   Limit   Limits   Scotex   Sharn3   Subscribable

CSV 2023-02-10

System Frequency

This page holds the historic system frequency data for Great Britain at a 1 second resolution. It is the role of the National Grid ESO to keep the system frequency at 50 Hz, with a statutory limit of 0.5 Hz...

49 ESO

Frequency   Historic   Subscribable   System

CSV 2023-02-10

Interconnector Trading Procurement Framework

Documentation relating to interconnector trading, including the procurement framework and supporting materials. Watch the video below: >**NOTE:** Interconnector Requirement and Auction Summary Data

9 ESO

Framework   Subscribable   Trading

PDF 2023-02-10

Monthly Balancing Services Use of System (BSUoS) Forecast Data

The Balancing Services Use of System (BSUoS) costs are reported on a monthly basis with a forecast for the next month and a rolling 24 month period. Here you can find the data for the 24 month ahead forecast....

100 ESO

Balancing   Bsuos   Cost   Forecast   Monthly   Subscribable

CSV PDF XLSX 2023-02-10

Local Authority Level Spatial Heat Model Outputs (FES)

This dataset represents the regional results from the Spatial Heat model used as part of the Future Energy Scenarios. The 2021 data was generated to support a thought piece to explore the findings from our new...

11 ESO

Fes   Heat   Local Authority   Regional   Subscribable

CSV 2023-02-10

Index Linked Contracted Energy Volume

Index Linked Contract can be used by National Grid ESO to meet the [voltage requirement](https://www.nationalgrideso.com/transmission-constraint-management?market-information "voltage"). The contract is...

136 ESO

Balancing   Balancing Services   Constraint   Contract   Contract Enactment   Fixed   Index   Index-linked   Linked   Price   Reactive   Spread   Subscribable   Trading   Voltage   Volume

CSV Unknown 2023-02-10

ESO Operational Transparency Forum

>**NOTE:** The ESO operational transparency forum has a new website page, please visit the ESO website for up to date information. All historic data has been transitioned over to the new platform and in turn...

265 ESO

Covid-19   Preparedness   Subscribable   Webinar

CSV MP4 PDF Unknown VIDEO XLSX 2023-02-10

Platform For Energy Forecasting (PEF) Strategic Project Roadmap

In April 2018, the ESO initiated strategic transformation project to develop and implement state of art forecasting capability to deliver value to consumers by providing accurate possible, user-friendly...

1 ESO

Demand   Forecast   Pef   Roadmap   Subscribable

PDF 2023-02-10

IFA - NGESO's Intraday Transfer Limit

These are the values System Operators use to restrict the maximum import and export Interconnector flows. These values are submitted in MW per GMT hourly time period. >**NOTE:** Values will only be published...

17 ESO

Ifa   Intraday Trading Limit   Intraday Transfer Limit   Itl   Net Transfer Capacity   Network Transfer Capacity   Subscribable

CSV 2023-02-10

Firm Fast Reserve Post Tender Reports

Fast Reserve provides the rapid and reliable delivery of active power through an increased output from generation or a reduction in consumption from demand sources, following receipt of an electronic dispatch...

13 ESO

Ancillary   Balancing   Fast   Firm   Reserve   Service   Subscribable   Tender

Unknown 2023-02-10

Data Portal: Planned Changes & Known Issues

Here you will find details of upcoming changes to the ESO Data Portal along with any known issues that we are working to resolve. If you have encountered any issues not captured in this table please report...

1 ESO

Changes   Issues   Planned   Subscribable

CSV 2023-02-10

Regional breakdown of FES data (Electricity)

Long term electricity forecasts per region covering demand, demand side response and distributed generation based on our Future Energy Scenarios. Regions presented are Grid Supply Points (GSPs) and large sites...

14 ESO

Active   Defs   Demand   Distribution   Electric   Energy   Future   Heat   Maps   Peak   Power   Pumps   Regional   Response   Scenarios   Storage   Subscribable   Vehicles

CSV 2023-02-10

Voltage System Costs

To give greater insight on balancing decisions, this post monthly report provides outturn system costs for maintaining voltage levels on the network. Maintaining the electricity system at the correct voltages...

10 ESO

Cost   Diagram   Network   Subscribable   System   Voltage

CSV PDF 2023-02-10

Short Term Operating Reserve (STOR) Post Tender Reports

If demand ends up being greater than forecast, or there is unforeseen generation unavailability, extra sources of power may be needed to manage the system. One form of reserve that is used to manage this is...

8 ESO

Ancillary   Balancing   Information   Market   Report   Reserve   Service   Stor   Subscribable   Tender

XLSX 2023-02-10

IFA2 - NGESO's Intraday Transfer Limit

These are the values System Operators use to restrict the maximum import and export Interconnector flows. These values are submitted in MW per GMT hourly time period. >**NOTE:** Values will only be published...

17 ESO

Ifa2   Intraday Trading Limit   Intraday Transfer Limit   Itl   Net Transfer Capacity   Network Transfer Capacity   Ntc   Subscribable

CSV 2023-02-10

Optional Downward Flexibility Management (ODFM) Service Documents

In our role as Electricity System Operator (ESO), we balance generation and demand in real time. When demand is low, there may be a requirement for additional flexibility to balance generation and demand, as...

21 ESO

Ancillary   Balancing   Downward Flexibility   Guidance   Odfm   Subscribable

DOC M4V PDF XLSX 2023-02-10

Monthly Operational Metered Wind Output

Metered Wind Output in MW for 'Scotland' and 'England and Wales'. Output is provided per date per Settlement Period. Please note that this data is from operational metering and is therefore expected to be...

5 ESO

England   Monthly   Output   Scotland   Subscribable   Wind

CSV 2023-02-10

Obligatory Reactive Power Service (ORPS)

The obligatory reactive power service (ORPS) is the provision of varying reactive power output. At any given output generators may be requested to produce or absorb reactive power to help manage system...

5 ESO

Ancillary   Balancing   Obligatory   Orps   Power   Reactive   Service   Subscribable   Utilisation

CSV PDF XLSX 2023-02-10

Fast Reserve Market Information

Fast Reserve provides the rapid and reliable delivery of active power through an increased output from generation or a reduction in consumption from demand sources, following receipt of an electronic dispatch...

36 ESO

Ancillary   Balancing   Fast   Firm   Information   Market   Reserve   Service   Subscribable

PDF XLSX 2023-02-10

Monthly Balancing Services Use of System (BSUoS) Forecast Reports

The Balancing Services Use of System (BSUoS) costs are reported on a monthly basis with a forecast for the next month and a rolling 24 month period. Here you can find the report created each month which...

81 ESO

Balancing   Bsuos   Cost   Forecast   Monthly   Subscribable

PDF 2023-02-10

System Excursions

The National Grid Electricity System Operator (ESO) publishes an annual report on the performance of the National Electricity Transmission System (NETS) in Great Britain and fulfils Transmission Licence...

2 ESO

Excursions   Frequency   Subscribable   System   Voltage

CSV 2023-02-10

Future Energy Scenarios – Electricity Supply Data Table (ES1)

The Future Energy Scenarios (FES) represent a range of different, credible ways to decarbonise our energy system as we strive towards the 2050 target. One of the FES outputs is an agreed set of data tables...

3 ESO

Electricity   Energy   Es1   Fes   Future   Scenario   Subscribable   Supply   Table

CSV 2023-02-10

Day Ahead Half Hourly Demand Forecast Performance

The historic half hourly day ahead national demand forecast as published via BM reports, alongside the outturn values, adjustments for TRIAD avoidance estimates and Absolute Percentage Error (APE) for each...

1 ESO

Day Ahead   Demand   Forecast   Subscribable

CSV 2023-02-10

24 Months Ahead Constraint Cost Forecast

This dataset contains the 24-month ahead constraint costs on a monthly basis for the main boundaries on the transmission system. These costs are the costs of managing constraint boundaries (for thermal,...

1 ESO

Constraint Cost   Constraint Forecast   Subscribable

CSV 2023-02-10

Firm Frequency Response (FFR) Market Information

Firm Frequency Response (FFR) market information reports on the FFR requirement for two months ahead of the publishing month, as well as information on the contracts due to provide in the month following the...

87 ESO

Balancing   Contract   Ffr   Firm   Frequency   Market   Response   Service   Subscribable   Tender

CSV PDF XLSX 2023-02-10

Daily Balancing Services Use of System (BSUoS) Cost Report

The BSUoS charge recovers the cost of day-to-day operation of the transmission system. Generators and suppliers are liable for these charges, which are calculated daily as a flat tariff for all users....

40 ESO

Balancing   Bsuos   Cost   Daily   Report   Subscribable

PDF 2023-02-10

ElecLink - NGESO's Network Transfer Capacity

These are the values System Operators use to restrict the maximum import and export Interconnector flows. These values are submitted in MW per GMT hourly time period. >**NOTE:** Values will only be published...

16 ESO

Itl   Net Transfer Capacity   Network Transfer Capacity   Ntc   Subscribable

CSV 2023-02-10

Daily Balancing Services Use Of System (BSUoS) Historic & Forecast Costs

The data set shows the daily costs outturn per category associated with balancing the system for the year to date, and the daily forecast costs for the following financial year. In the dataset the category...

5 ESO

Balancing   Bsuos   Cost   Daily   Forecast   Historic   Outturn   Subscribable

CSV 2023-02-10

Demand Flexibility Service: Live Events

The Demand Flexibility Service (DFS) has been developed to allow the ESO to access additional flexibility when the national demand is at its highest – during peak winter days – which is not currently...

4 ESO

Demand   Flexibility   Live   Sms   Subscribable

CSV 2023-02-10

Future Energy Scenario (FES) Building Block Data

We have been working with the other network companies as part of the Energy Networks Association (ENA) Open Networks project. The Whole System Electricity Future Energy Scenarios (FES) part of this work seeks...

6 ESO

Bulding Blocks   Capacity   Defs   Demand   Energy   Fes   Fes2020   Fes2021   Future   Generation   Scenarios   Subscribable

CSV 2023-02-10

Phase 2: FFR Auction Results Summary

As part of our work on developing our balancing services we are running a weekly trial auction for Firm Frequency Response. The weekly auction trial results and order hash data are available here. Note: The 2...

20 ESO

Auction   Balancing   Balancing Services   Dlh   Ffr   Lfs   Response   Subscribable   Trial

CSV ZIP 2023-02-10

Short Term Operating Reserve (STOR) Market Information

If demand ends up being greater than forecast, or there is unforeseen generation unavailability, extra sources of power may be needed to manage the system. One form of reserve that is used to manage this is...

16 ESO

Ancillary   Balancing   Information   Market   Report   Reserve   Service   Stor   Subscribable   Tender

PDF XLSX 2023-02-10

GIS Boundaries for GB Grid Supply Points

This dataset contains approximate GIS (Geographic Information System) geospatial boundaries associated with each of the Grid Supply Points (GSPs) on the GB transmission network. The boundaries have been...

5 Other (Public Domain)

Boundaries   Demand   Embedded   Generation   Gis   Grid Supply Point   Gsp   Regional   Shape File   Subscribable

CSV GEOJSON ZIP 2023-02-10

Daily Balancing Services Use of System (BSUoS) Volume Data

The BSUoS charge recovers the cost of day-to-day operation of the transmission system. Generators and suppliers are liable for these charges, which are calculated daily as a flat tariff for all users....

6 ESO

Balancing   Bsuos   Daily   Subscribable   Volume

CSV 2023-02-10

Optional Downward Flexibility Management (ODFM) Market Information

In our role as Electricity System Operator (ESO), we balance generation and demand in real time. When demand is low, there may be a requirement for additional flexibility to balance generation and demand, as...

13 ESO

Ancillary   Balancing   Downward Flexibility   Market Information   Odfm   Subscribable

CSV PDF 2023-02-10

Great Britain System Inertia Bid and Offer Costs

This dataset provides indicative values for the average daily price (in £ per GVAs) for BM accepted offers tagged as being for System Inertia. It also includes the cost of bid actions required to offer on...

1 ESO

Bid   Cost   Inertia   Offer   Subscribable

CSV 2023-02-10

BritNed - NGESO's Intraday Trading Limit

These are the values System Operators use to restrict the maximum import and export Interconnector flows. These values are submitted in MW per GMT hourly time period. >**NOTE:** Values will only be published...

17 ESO

Britned   Intraday Trading Limit   Intraday Transfer Limit   Itl   Net Transfer Capacity   Network Transfer Capacity   Ntc   Subscribable

CSV 2023-02-10

Firm Frequency Response (FFR) Post Tender Reports

The Firm Frequency Response (FFR) post tender reports are published following each monthly tender. They indicate which tenders were accepted and rejected and the information submitted for these tenders. Reason...

71 ESO

Balancing   Contract   Ffr   Firm   Frequency   Response   Service   Subscribable   Tender

CSV Unknown XLSM XLSX 2023-02-10

GIS Boundaries for GB DNO License Areas

This dataset contains approximate GIS (geographic information system) geospatial boundaries for each of the DNO License Areas in Great Britain. There are 14 licensed Distribution Network Operators (DNOs) in...

3 Other (Public Domain)

Boundaries   Demand   Dno   Generation   Gis   Grid Supply Point   Gsp   Gsp Group   License Area   Pes   Public Electricity Supplier   Regional   Shapefile   Subscribable

GEOJSON PDF ZIP 2023-02-10

Data Publication Requests

Please visit our ENCC Transparency Roadmap which highlights the activities we will deliver in the short to medium term. We welcome any further suggestions or questions regarding future data items or portal...

ESO

Data Portal   New Data   Requests   Subscribable

2022-07-07

Live System Information

This page contains live system data for transmission demand, frequency and transfers. This dataset does not currently include any files to download, all information is presented on this page. Use the links...

1 ESO

Demand   Frequency   Live   System   Transfers

Unknown 2021-07-20

Coronavirus Demand Suppression

Data showing the demand suppression attributed to the Coronavirus Pandemic. Demand suppression is calculated by taking the National Demand + Embedded Generation outturns and comparing this with the modelled...

3 ESO

Coronavirus   Demand   Subscribable   Surpression

CSV PNG 2021-07-20

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