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Historic Demand Data 2020

Table Information

SETTLEMENT_DATE

Title Settlement Date
Type date
Description The period from 00:00 hours to 24:00 hours on each day.
Comment
Example 01/01/2020
Unit

SETTLEMENT_PERIOD

Title Settlement Period
Type integer
Description The half hourly period for the historic outurn occurred. Settlement period 1 runs from 00:00-00:30.
Comment
Example 1
Unit

ND

Title National Demand
Type integer
Description This is the Great Britain generation requirement and is equivalent to the Initial National Demand Outturn (INDO) and National Demand Forecast as published on BM Reports. National Demand is the sum of metered generation, but excludes generation required to meet station load, pump storage pumping and interconnector exports.National Demand is calculated as a sum of generation based on Nation Grid ESOoperational generation metering.
Comment
Example 26340
Unit MW

I014_ND

Title I014 National Demand
Type integer
Description Equivalent to national demand but calculated using settlement metered generation data from the I014 file where available.
Comment
Example 23706
Unit MW

TSD

Title Transmission System Demand
Type integer
Description This is the Transmission System generation requirement and is equivalent to the Initial Transmission System Outturn (ITSDO) and Transmission System Demand Forecast on BM Reports. Transmission System Demand is equal to the ND plus the additional generation required to meet station load, pump storage pumping and interconnector exports. Transmission System Demand is calculated using Nation Grid ESO operational metering. Note that the Transmission System Demand includes an estimate of station load of 500MW in BST and 600MW in GMT.
Comment
Example 27153
Unit MW

I014_TSD

Title I014 Transmission System Demand
Type integer
Description Equivalent to TSD, but calculated using settlement metered generation data from the I014 file where available.
Comment
Example 24325
Unit MW

ENGLAND_WALES_DEMAND

Title England and Wales Demand
Type integer
Description England and Wales Demand, as ND above but on an England and Wales basis.
Comment
Example 23821
Unit MW

EMBEDDED_WIND_GENERATION

Title Estimated Embedded Wind Generation
Type integer
Description This is an estimate of the GB wind generation from wind farms which do not have Transmission System metering installed. These wind farms are embedded in the distribution network and invisible to Nation Grid ESO. Their effect is to suppress the electricity demand during periods of high wind. The true output of these generators is not known so an estimate is provided based on Nation Grid ESO’s best model.
Comment
Example 1244
Unit MW

EMBEDDED_WIND_CAPACITY

Title Embedded Wind Capacity
Type integer
Description This is Nation Grid ESO’s best view of the installed embedded wind capacity in GB. This is based on publicly available information compiled from a variety of sources and is not the definitive view. It is consistent with the generation estimate provided above.
Comment
Example 6465
Unit MW

EMBEDDED_SOLAR_GENERATION

Title Estimated Embedded Wind Generation
Type integer
Description This is Nation Grid ESO’s best view of the installed embedded wind capacity in GB. This is based on publicly available information compiled from a variety of sources and is not the definitive view. It is consistent with the generation estimate provided above.
Comment
Example 0
Unit MW

EMBEDDED_SOLAR_CAPACITY

Title Embedded Solar Capacity
Type integer
Description As embedded wind capacity above, but for solar generation.
Comment
Example 13080
Unit MW

NON_BM_STOR

Title Non-Balancing Mechanism Short-Term Operating Reserve
Type integer
Description For units that are not included in the ND generator definition. This can be in the form of generation or demand reduction.
Comment
Example 0
Unit MW

PUMP_STORAGE_PUMPING

Title Pump Storage Pumping
Type integer
Description The demand due to pumping at hydro pump storage units; the -ve signifies pumping load.
Comment
Example 15
Unit MW

I014_PUMP_STORAGE_PUMPING

Title I014 Pump Storage Pumping
Type integer
Description As pump storage pumping, but calculated based on settlement data from the I014 file where available.
Comment
Example 19
Unit MW

FRENCH_FLOW

Title French Import Interconnector Flow
Type integer
Description The flow on the respective interconnector. -ve signifies export power out from GB; +ve signifies import power into GB.
Comment
Example 1703
Unit MW

BRITNED_FLOW

Title Britned Import Interconnector Flow
Type integer
Description The flow on the respective interconnector. -ve signifies export power out from GB; +ve signifies import power into GB.
Comment
Example 852
Unit MW

MOYLE_FLOW

Title Moyle Import Interconnector Flow
Type integer
Description The flow on the respective interconnector. -ve signifies export power out from GB; +ve signifies import power into GB.
Comment
Example -151
Unit MW

EAST_WEST_FLOW

Title East West Import Interconnector Flow
Type integer
Description The flow on the respective interconnector. -ve signifies export power out from GB; +ve signifies import power into GB.
Comment
Example -47
Unit MW

NEMO_FLOW

Title Nemo Import Interconnector Flow
Type integer
Description The flow on the respective interconnector. -ve signifies export power out from GB; +ve signifies import power into GB.
Comment
Example 854
Unit MW

I014_FRENCH_FLOW

Title I014 French Import Interconnector Flow
Type integer
Description Each as interconnectors imports, but calculated based on settlement data from the I014 file where available.
Comment
Example 1681
Unit MW

I014_BRITNED_FLOW

Title I014 Britned Import Interconnector Flow
Type integer
Description Each as interconnectors imports, but calculated based on settlement data from the I014 file where available.
Comment
Example 854
Unit MW

I014_MOYLE_FLOW

Title I014 Moyle Import Interconnector Flow
Type integer
Description Each as interconnectors imports, but calculated based on settlement data from the I014 file where available.
Comment
Example -150
Unit MW

I014_EAST_WEST_FLOW

Title I014 East West Import Interconnector Flow.
Type integer
Description Each as interconnectors imports, but calculated based on settlement data from the I014 file where available.
Comment
Example -44
Unit MW