Capacity and headroom
Hosting capacity, headroom or congestion published per station or area.
In Substralis15 of 17 sources contributing
Substralis · GB
Great Britain
Great Britain's licensing-cleared data layers are public; the full portal for this market opens with free accounts shortly.
Country coverageGB · SupportedSupported
- Supported
- GB
- Sources
- 42
- Signal types
- 34
- Fresh sources
- 42
- Market posture
- Public access
What Great Britain publishes
37 of 49 catalogued sources contribute today. Market data is kept apart: it describes the market, not Great Britain's grid.
Connection queue
Connection cases, their stages and who applied.
In Substralis14 of 18 sources contributing
- Project identity unavailable (DNO_HEATMAPS)
- Historical snapshots unavailable (NESO)
Stations and registry
Substations, plants and the companies behind them.
In Substralis3 of 17 sources contributing
Grid context
Tariffs, network plans and dated reinforcement.
In Substralis3 of 3 sources contributing
Market data
Prices, flows and generation mix, mostly from pan-European feeds.
In Substralis2 of 6 sources contributing
Signal types
aggregate capacityapplication sitearea capacityasset market time seriesasset registrybalancing marketbalancing time seriesboundary capabilitycommitted pipelinecompaniesconsent pipelinedata center demandforward capacitygrid assetsgrid locationsgrid projectsgrid tariffsgsp capacitymarket participantsmarket time seriesmixednamed participantsnetwork constraintsoffshore pipelineproject pipelinequeue participantsreinforcement programmerenewable forecastscenario forecastseabed rightsspeculative queuesubstation capacityunit unavailabilityzone balance
Declared sources (42)
The public source declarations Substralis watches for Great Britain. Freshness appears once a source has completed a successful run in this environment.
CMRfresh
National Energy System Operator / EMR Delivery Body
committed pipeline
Last success 16 Sept 2026, 08:27
COMPANIES_HOUSEfresh
Companies House
companies
Last success 26 Sept 2026, 02:33
CP30_REINFORCEMENTfresh
NESO
forward capacityreinforcement programme
Last success 20 Sept 2026, 08:01
The Crown Estate
offshore pipelinecommitted pipelineseabed rightsgrid locations
Last success 31 Jul 2026, 08:35
DNO_HEATMAPSfresh
GB Distribution Network Operators
aggregate capacitysubstation capacity
Last success 23 Sept 2026, 08:50
DUKES_POWER_STATIONSfresh
DESNZ
asset registrycommitted pipeline
Last success 5 Aug 2026, 07:34
ELEXON_BMU_REFERENCEfresh
Elexon
market participantscompanies
Last success 26 Sept 2026, 08:01
ENA_ECRfresh
Energy Networks Association / GB Distribution Network Operators
speculative queuecommitted pipeline
Last success 25 Sept 2026, 07:15
ENTSOEfresh
ENTSO-E Transparency Platform
market time seriesrenewable forecastbalancing time seriesunit unavailability
Last success 26 Sept 2026, 00:21
ENWL_NDP_HEADROOMfresh
Electricity North West (SP ENW)
forward capacitysubstation capacity
Last success 23 Sept 2026, 04:51
GB_GRID_KBfresh
NESO / Ofgem / DESNZ Great Britain grid knowledge base
network constraintszone balancedata center demandarea capacity
Last success 21 Sept 2026, 06:41
GB_LTDS_HEATMAPfresh
UK Power Networks + SP Energy Networks (Ofgem LTDS heatmaps)
grid assetssubstation capacity
Last success 23 Sept 2026, 05:39
GB_NESO_EA_REGISTERfresh
NESO (National Energy System Operator)
committed pipeline
Last success 7 Sept 2026, 07:14
GB_TNUOSfresh
National Energy System Operator (NESO)
grid tariffs
Last success 3 Sept 2026, 07:06
LCCC_CFDfresh
Low Carbon Contracts Company
committed pipeline
Last success 16 Sept 2026, 08:35
LCCC_CFD_LOCATIONSfresh
Low Carbon Contracts Company
committed pipelinespeculative queue
Last success 12 Sept 2026, 07:29
LCCC_CFD_TO_BMUfresh
Low Carbon Contracts Company
queue participants
Last success 12 Sept 2026, 07:25
NESOfresh
National Energy System Operator
mixed
Last success 25 Sept 2026, 06:53
NESO
asset market time seriesbalancing market
Last success 26 Sept 2026, 07:40
NESO_ETYS_BOUNDARIESfresh
NESO
forward capacityboundary capability
Last success 20 Sept 2026, 07:56
NESO_FESfresh
National Energy System Operator
scenario forecast
Last success 21 Sept 2026, 09:07
National Grid Electricity Distribution
grid locationsspeculative queuecommitted pipeline
Last success 22 Sept 2026, 07:04
National Grid Electricity Distribution
grid locationsspeculative queuecommitted pipelinecompanies
Last success 21 Sept 2026, 07:11
NGED_ECRfresh
National Grid Electricity Distribution
grid locationsspeculative queuecommitted pipelinecompanies
Last success 24 Sept 2026, 06:19
NGED_GCRfresh
National Grid Electricity Distribution
aggregate capacitycommitted pipelinespeculative queue
Last success 22 Sept 2026, 21:12
National Grid Electricity Distribution
aggregate capacitysubstation capacity
Last success 25 Sept 2026, 07:47
NGED_NOM_HEADROOMfresh
National Grid Electricity Distribution
aggregate capacitysubstation capacity
Last success 24 Sept 2026, 07:33
NIE Networks (Northern Ireland DNO)
grid assetssubstation capacity
Last success 4 Sept 2026, 06:50
NIE Networks (Northern Ireland DNO)
grid assets
Last success 26 Sept 2026, 06:44
NPG_CONNECTION_QUEUEfresh
Northern Powergrid
speculative queue
Last success 8 Sept 2026, 07:31
NPG_DFES_HEADROOMfresh
Northern Powergrid
forward capacitysubstation capacity
Last success 20 Sept 2026, 07:46
NPG_HEATMAP_POLYGONSfresh
Northern Powergrid
aggregate capacitysubstation capacity
Last success 20 Sept 2026, 07:32
NPG_HEATMAP_TABLEfresh
Northern Powergrid
aggregate capacitysubstation capacity
Last success 20 Sept 2026, 07:26
NPG_NATIONAL_ECRfresh
Northern Powergrid
speculative queuecommitted pipeline
Last success 5 Sept 2026, 07:22
Planning Inspectorate
consent pipelinecommitted pipelineapplication sitegrid locations
Last success 26 Sept 2026, 04:30
REPDfresh
Department for Energy Security and Net Zero
project pipelinecommitted pipeline
Last success 20 Sept 2026, 06:49
SP_ENW_CAPACITYfresh
Electricity North West
substation capacity
Last success 24 Sept 2026, 05:23
SPEN_DG_HEATMAPSfresh
SP Energy Networks
aggregate capacitygsp capacity
Last success 2 Jul 2026, 07:40
SSEN_ANM_ZONESfresh
SSEN Distribution
aggregate capacitynetwork constraints
Last success 1 Jul 2026, 07:20
SSEN_ECRfresh
SSEN Distribution
speculative queuecommitted pipeline
Last success 15 Sept 2026, 07:36
UKPN_DFES_HEADROOMfresh
UK Power Networks
forward capacitysubstation capacity
Last success 23 Sept 2026, 04:24
UKPN_ECRfresh
UK Power Networks
speculative queuecommitted pipeline
Last success 6 Sept 2026, 08:13
Generated 26 Sept 2026, 18:50