Grid

Data health

Data health

Published is the source time. Retrieved is when Grid fetched it. A series is Not updated once that source time is older than its expected cadence plus its publication lag. NTS intraday series are Not updated when that source time is more than 3 hours old. A completed gas day stays current. A missing value is Not yet available.

Source time and Grid time

Demand

Elexon BMRS · ITSDO · PT30M

35,015 MW

Published · Retrieved

GB gas SAP

National Gas · PUBOB603 · P1D

7.51 p/kWh

Published · Retrieved

Published about 1 day after the gas day

Every series

Registry

  • Gas generation

    Elexon BMRS · FUELINST · PT30M

    3,525 MW

    Published · Retrieved

  • Coal generation

    Elexon BMRS · FUELINST · PT30M

    0 MW

    Published · Retrieved

  • Oil generation

    Elexon BMRS · FUELINST · PT30M

    0 MW

    Published · Retrieved

  • Nuclear generation

    Elexon BMRS · FUELINST · PT30M

    5,008 MW

    Published · Retrieved

  • Biomass generation

    Elexon BMRS · FUELINST · PT30M

    3,055 MW

    Published · Retrieved

  • Hydro generation

    Elexon BMRS · FUELINST · PT30M

    631 MW

    Published · Retrieved

  • Other generation

    Elexon BMRS · FUELINST · PT30M

    2,069 MW

    Published · Retrieved

  • Wind generation

    Elexon BMRS · FUELINST · PT30M

    11,455 MW

    Published · Retrieved

  • Embedded wind

    NESO · 177f6fa4-ae49-4182-81ea-0c6b35f26ca6 · PT30M

    4,548 MW

    Published · Retrieved

  • Solar generation

    Sheffield Solar PV Live · pvlive-gsp-0 · PT30M

    0 MW

    Published · Retrieved

  • Pumped storage

    Elexon BMRS · FUELINST · PT30M

    769 MW

    Published · Retrieved

  • Battery discharge

    Elexon BMRS · FUELINST · PT30M

    Not yet available

    —

    Published · Retrieved

  • Generation balance

    Elexon BMRS, NESO, Sheffield Solar PV Live · headline-balance · PT30M

    31,060 MW

    Published · Retrieved

  • Imports

    Elexon BMRS · FUELINST · PT30M

    7,783 MW

    Published · Retrieved

  • Exports

    Elexon BMRS · FUELINST · PT30M

    1,296 MW

    Published · Retrieved

  • Storage charging

    Elexon BMRS · FUELINST · PT30M

    0 MW

    Published · Retrieved

  • Carbon intensity

    Carbon Intensity API · intensity-actual · PT30M

    84 gCO₂/kWh

    Published · Retrieved

  • Wind, solar and hydro share

    Elexon BMRS, NESO, Sheffield Solar PV Live · headline-balance · PT30M

    54 %

    Published · Retrieved

  • Market index

    Elexon BMRS · APXMIDP · PT30M

    168.6 £/MWh

    Published · Retrieved

  • Imbalance price

    Elexon BMRS · system-prices · PT30M

    128 £/MWh

    Published · Retrieved

    Published about 30 minutes after the settlement period

  • Brent

    U.S. Energy Information Administration · PET.RBRTE.D · P1D

    115.22 $/bbl

    Published · Retrieved

    Published about 8 days after the trading day

  • WTI

    U.S. Energy Information Administration · PET.RWTC.D · P1D

    107.89 $/bbl

    Published · Retrieved

    Published about 8 days after the trading day

  • Henry Hub

    U.S. Energy Information Administration · NG.RNGWHHD.D · P1D

    3.1 $/MMBtu

    Published · Retrieved

    Published about 8 days after the trading day

  • Europe natural gas

    World Bank Pink Sheet · Natural gas, Europe · P1M

    25.42 $/MMBtu

    Published · Retrieved

    Published about 1 month after the month

  • Japan LNG

    World Bank Pink Sheet · Liquefied natural gas, Japan · P1M

    14.25 $/MMBtu

    Published · Retrieved

    Published about 1 month after the month

  • NTS entry, national

    National Gas · PUBOB2042 · PT1H

    179.6 mscm/d

    Published · Retrieved

    Published about 10 minutes after the gas day

  • NTS entry, north

    National Gas · PUBOB2043 · PT1H

    88.77 mscm/d

    Published · Retrieved

    Published about 10 minutes after the gas day

  • NTS entry, south

    National Gas · PUBOB2044 · PT1H

    90.83 mscm/d

    Published · Retrieved

    Published about 10 minutes after the gas day

  • NTS entry forecast

    National Gas · PUBOB19 · PT1H

    159.27 mscm/d

    Published · Retrieved

    Published about 10 minutes after the gas day

  • NTS demand, completed day

    National Gas · PUBOB637 · P1D

    169.68 mscm

    Published · Retrieved

    Published about 1 day after the gas day

  • Opening linepack, interim

    National Gas · PUBOB29 · PT1H

    343.88 mscm

    Published · Retrieved

    Published about 10 minutes after the gas day

  • Predicted closing linepack 1

    National Gas · PUBOB30 · PT1H

    340.62 mscm

    Published · Retrieved

    Published about 10 minutes after the gas day

  • Predicted closing linepack 2

    National Gas · PUBOB31 · PT1H

    340.62 mscm

    Published · Retrieved

    Published about 10 minutes after the gas day

  • Storage injection

    National Gas · PUBOBJ1024 · P1D

    12,410,030 kWh

    Published · Retrieved

    Published about 1 day after the gas day

  • Storage withdrawal

    National Gas · PUBOBJ630 · P1D

    28.72 mscm

    Published · Retrieved

    Published about 1 day after the gas day

  • NTS demand

    National Gas · PUBOB637 · P1D

    169.68 mscm

    Published · Retrieved

    Published about 1 day after the gas day

  • NTS supply, volume

    National Gas · PUBOBJ635 · P1D

    170.4 mscm

    Published · Retrieved

    Published about 1 day after the gas day

  • NTS supply, energy

    National Gas · PUBOBJ636 · P1D

    1,881,303,837 kWh

    Published · Retrieved

    Published about 1 day after the gas day

  • Opening linepack

    National Gas · PUBOB693 · P1D

    343.14 mscm

    Published · Retrieved

    Published about 1 day after the gas day

  • Closing linepack

    National Gas · PUBOB694 · P1D

    343.88 mscm

    Published · Retrieved

    Published about 1 day after the gas day

  • LDZ offtake, volume

    National Gas · PUBOBJ1015 · P1D

    114.23 mscm

    Published · Retrieved

    Published about 1 day after the gas day

  • LDZ offtake, energy

    National Gas · PUBOBJ1023 · P1D

    1,258,212,114 kWh

    Published · Retrieved

    Published about 1 day after the gas day

  • Power offtake, volume

    National Gas · PUBOBJ1017 · P1D

    26.21 mscm

    Published · Retrieved

    Published about 1 day after the gas day

  • Power offtake, energy

    National Gas · PUBOBJ1025 · P1D

    285,791,080 kWh

    Published · Retrieved

    Published about 1 day after the gas day

  • Storage offtake, volume

    National Gas · PUBOBJ1016 · P1D

    1.14 mscm

    Published · Retrieved

    Published about 1 day after the gas day

  • Storage offtake, energy

    National Gas · PUBOBJ1024 · P1D

    12,410,030 kWh

    Published · Retrieved

    Published about 1 day after the gas day

  • Industrial offtake

    National Gas · PUBOBJ1018 · P1D

    2.01 mscm

    Published · Retrieved

    Published about 1 day after the gas day

  • Interconnector offtake

    National Gas · PUBOBJ1020 · P1D

    25.85 mscm

    Published · Retrieved

    Published about 1 day after the gas day

  • Storage withdrawal supply

    National Gas · PUBOBJ630 · P1D

    28.72 mscm

    Published · Retrieved

    Published about 1 day after the gas day

National Transmission System

Physical gas

Supply, demand, linepack and storage for the gas day. These series are separate from the System Average Price.

  • PUBOB2042

    PT1H

    Physical entry into the NTS, national, as an mscm/d rate. North and south are the split.

  • PUBOB2043

    PT1H

    Physical entry into the NTS for the north zone, as an mscm/d rate.

  • PUBOB2044

    PT1H

    Physical entry into the NTS for the south zone, as an mscm/d rate.

  • PUBOB19

    PT1H

    Forecast end-of-day aggregate entry, mscm/d. Each row has forecast_issued_at.

  • PUBOB4422

    P1D

    Catalogue unit is kWh. The autumn 2026 CSV was empty and the January 2025 extract repeated one value, so PUBOB4422 stays deferred. When it has no observation, the health row is the latest completed-day demand, PUBOB637, in million standard cubic metres.

  • PUBOB29

    PT1H

    Interim opening linepack for the gas day, million standard cubic metres.

  • PUBOB30

    PT1H

    Predicted closing linepack (PCLP1), million standard cubic metres.

  • PUBOB31

    PT1H

    Predicted closing linepack (PCLP2), million standard cubic metres.

  • PUBOB4423

    P1D

    Storage injection for the gas day, kWh. PUBOB4423 has no row in the completed-day window. When it has no observation, the health row is the latest completed day, PUBOBJ1024, in kWh.

  • PUBOB4424

    P1D

    Storage withdrawal for the gas day. PUBOB4424 has no row in the completed-day window. When it has no observation, the health row is the latest completed day, PUBOBJ630, in million standard cubic metres. A stored PUBOB4424 value stays positive generation.

  • PUBOB637

    P1D

    NTS demand for the finished gas day, million standard cubic metres, published on D+1.

  • PUBOBJ635

    P1D

    Physical NTS entry for the finished gas day, million standard cubic metres, published on D+1.

  • PUBOBJ636

    P1D

    Physical NTS entry for the finished gas day, kWh, published on D+1.

  • PUBOB693

    P1D

    Opening linepack for the gas day, million standard cubic metres. Equals the previous close.

  • PUBOB694

    P1D

    Closing linepack for the gas day, million standard cubic metres. Equals the next open.

  • PUBOBJ1015

    P1D

    LDZ offtake total for the gas day, million standard cubic metres. Parent of the LDZ site rows.

  • PUBOBJ1023

    P1D

    LDZ offtake total for the gas day, kWh. Parent of the LDZ site rows.

  • PUBOBJ1017

    P1D

    Power station offtake total for the gas day, million standard cubic metres.

  • PUBOBJ1025

    P1D

    Power station offtake total for the gas day, kWh.

  • PUBOBJ1016

    P1D

    Storage injection offtake total for the gas day, million standard cubic metres.

  • PUBOBJ1024

    P1D

    Storage injection offtake total for the gas day, kWh.

  • PUBOBJ1018

    P1D

    Industrial offtake total for the gas day, million standard cubic metres.

  • PUBOBJ1020

    P1D

    Interconnector export total for the gas day, million standard cubic metres.

  • PUBOBJ630

    P1D

    Storage withdrawal onto the NTS for the gas day, million standard cubic metres, published on D+1.

Transmission constraints

NESO constraints

Published constraint cost and volume, and the day-ahead boundary snapshot. Cost stays in £. Volume stays in MWh.

  • Reducing largest loss cost

    NESO · constraint-breakdown · P1D

    0 £

    Published · Retrieved

    Published about 7 days after the settlement period

  • Increasing system inertia cost

    NESO · constraint-breakdown · P1D

    968,377 £

    Published · Retrieved

    Published about 7 days after the settlement period

  • Voltage constraint cost

    NESO · constraint-breakdown · P1D

    961,806 £

    Published · Retrieved

    Published about 7 days after the settlement period

  • Thermal constraint cost

    NESO · constraint-breakdown · P1D

    663,813 £

    Published · Retrieved

    Published about 7 days after the settlement period

  • Reducing largest loss volume

    NESO · constraint-breakdown · P1D

    0 MWh

    Published · Retrieved

    Published about 7 days after the settlement period

  • Increasing system inertia volume

    NESO · constraint-breakdown · P1D

    13,928 MWh

    Published · Retrieved

    Published about 7 days after the settlement period

  • Voltage constraint volume

    NESO · constraint-breakdown · P1D

    17,791 MWh

    Published · Retrieved

    Published about 7 days after the settlement period

  • Thermal constraint volume

    NESO · constraint-breakdown · P1D

    -3,557 MWh

    Published · Retrieved

    Published about 7 days after the settlement period

  • Day-ahead boundary flow

    NESO · day-ahead-constraint-flows-and-limits · P1D

    12,773 MW

    Published · Retrieved

  • Day-ahead boundary limit

    NESO · day-ahead-constraint-flows-and-limits · P1D

    6,300 MW

    Published · Retrieved

Northern Ireland

SONI and SEMO

Outside GB. Northern Ireland, Ireland, and all-island stay on separate series. A missing value stays —.

Northern Ireland electricity

  • NI system demand

    EirGrid Group · demandactual · PT15M

    1,018 MW

    Published · Retrieved

  • Ireland system demand

    EirGrid Group · demandactual · PT15M

    4,937 MW

    Published · Retrieved

  • All-island system demand

    EirGrid Group · demandactual · PT15M

    5,955 MW

    Published · Retrieved

  • NI system generation

    EirGrid Group · generationactual · PT15M

    674 MW

    Published · Retrieved

  • Ireland system generation

    EirGrid Group · generationactual · PT15M

    3,961 MW

    Published · Retrieved

  • All-island system generation

    EirGrid Group · generationactual · PT15M

    4,635 MW

    Published · Retrieved

  • NI wind

    EirGrid Group · windactual · PT15M

    329 MW

    Published · Retrieved

  • Ireland wind

    EirGrid Group · windactual · PT15M

    2,039 MW

    Published · Retrieved

  • All-island wind

    EirGrid Group · windactual · PT15M

    2,368 MW

    Published · Retrieved

  • NI wind forecast

    EirGrid Group · windforecast · PT15M

    171 MW

    Published · Retrieved

  • Ireland wind forecast

    EirGrid Group · windforecast · PT15M

    1,276 MW

    Published · Retrieved

  • All-island wind forecast

    EirGrid Group · windforecast · PT15M

    1,447 MW

    Published · Retrieved

  • NI solar

    EirGrid Group · solaractual · PT15M

    0 MW

    Published · Retrieved

  • Ireland solar

    EirGrid Group · solaractual · PT15M

    1 MW

    Published · Retrieved

  • All-island solar

    EirGrid Group · solaractual · PT15M

    1 MW

    Published · Retrieved

  • NI solar forecast

    EirGrid Group · solarforecast · PT15M

    0 MW

    Published · Retrieved

  • Ireland solar forecast

    EirGrid Group · solarforecast · PT15M

    0 MW

    Published · Retrieved

  • All-island solar forecast

    EirGrid Group · solarforecast · PT15M

    0 MW

    Published · Retrieved

  • NI carbon intensity

    EirGrid Group · co2intensity · PT15M

    86 gCO₂/kWh

    Published · Retrieved

    Published about 1 hour 30 minutes after the quarter-hour

  • Ireland carbon intensity

    EirGrid Group · co2intensity · PT15M

    132 gCO₂/kWh

    Published · Retrieved

    Published about 1 hour 30 minutes after the quarter-hour

  • All-island carbon intensity

    EirGrid Group · co2intensity · PT15M

    124 gCO₂/kWh

    Published · Retrieved

    Published about 1 hour 30 minutes after the quarter-hour

  • Moyle

    EirGrid Group · interconnection · PT15M

    245 MW

    Published · Retrieved

  • NI net transfer

    EirGrid Group · interconnection · PT15M

    245 MW

    Published · Retrieved

  • EWIC

    EirGrid Group · interconnection · PT15M

    530 MW

    Published · Retrieved

  • Greenlink

    EirGrid Group · interconnection · PT15M

    513 MW

    Published · Retrieved

  • Ireland net transfer

    EirGrid Group · interconnection · PT15M

    1,043 MW

    Published · Retrieved

  • All-island net transfer

    EirGrid Group · interconnection · PT15M

    Not updated

    1,288 MW

    Published · Retrieved

  • NI gas

    EirGrid Group · fuelmix · PT15M

    4,182.08 MWh

    Published · Retrieved

  • NI renewables

    EirGrid Group · fuelmix · PT15M

    8,510.64 MWh

    Published · Retrieved

  • NI net import

    EirGrid Group · fuelmix · PT15M

    3,823.26 MWh

    Published · Retrieved

  • Ireland coal

    EirGrid Group · fuelmix · PT15M

    0 MWh

    Published · Retrieved

  • Ireland gas

    EirGrid Group · fuelmix · PT15M

    30,076.38 MWh

    Published · Retrieved

  • Ireland other fossil

    EirGrid Group · fuelmix · PT15M

    2,930.57 MWh

    Published · Retrieved

  • Ireland renewables

    EirGrid Group · fuelmix · PT15M

    67,429.16 MWh

    Published · Retrieved

  • Ireland net import

    EirGrid Group · fuelmix · PT15M

    -893.21 MWh

    Published · Retrieved

  • All-island coal

    EirGrid Group · fuelmix · PT15M

    Not updated

    0 MWh

    Published · Retrieved

  • All-island gas

    EirGrid Group · fuelmix · PT15M

    Not updated

    35,647.14 MWh

    Published · Retrieved

  • All-island other fossil

    EirGrid Group · fuelmix · PT15M

    Not updated

    3,155.14 MWh

    Published · Retrieved

  • All-island renewables

    EirGrid Group · fuelmix · PT15M

    Not updated

    76,447.8 MWh

    Published · Retrieved

  • All-island net import

    EirGrid Group · fuelmix · PT15M

    Not updated

    2,974.58 MWh

    Published · Retrieved

  • All-island SNSP

    EirGrid Group · SnspAll · PT30M

    64 %

    Published · Retrieved

  • Imbalance settlement price

    EirGrid Group · marketPricing · PT30M

    111.93 €/MWh

    Published · Retrieved

    Published about 1 hour 30 minutes after the half-hour

  • Net imbalance volume

    EirGrid Group · marketPricing · PT30M

    -4.12 MWh

    Published · Retrieved

    Published about 1 hour 30 minutes after the half-hour

Electricity storage

Pumped storage and batteries

Discharge and charging from the warmed FUELINST envelope. The storage page keeps the DESNZ inventory separate from this monitored fleet.

Storage

  • Pumped storage

    Elexon BMRS · FUELINST · PT30M

    769 MW

    Published · Retrieved

  • Battery discharge

    Elexon BMRS · FUELINST · PT30M

    Not yet available

    —

    Published · Retrieved

  • Storage charging

    Elexon BMRS · FUELINST · PT30M

    0 MW

    Published · Retrieved