gb_npg_ltds_heatmap

Northern Powergrid LTDS Capacity Heatmap

Published by Northern Powergrid · GB · Twice a year

Grantedcommercial_use_with_attributionDisabled

Demand, generation and reverse-power-flow headroom (MVA) at Northern Powergrid's 670 substations in the North East and Yorkshire, with firm and contracted capacity, RAG status and limiting factor, in the Ofgem LTDS Capacity Heatmap format. Needs an NPg portal API key.

What is withheld, and why

Nothing is withheld. Values are served with the attribution the licence asks for: Supported by Northern Powergrid Open Data. Keep it with any figure you show.

The dataset carries NPg's Open Data Licence v1.0 although its records need a login: the account is an access control, not a different licence. technical_access is "no" until a key exists. NPg asks for the statement to be displayed prominently and, where possible, a link to the licence.

Licence and rights evidence

Licence: Northern Powergrid Open Data Licence v1.0 (opens the operator’s site)
Attribution: Supported by Northern Powergrid Open Datarequired
Technical access: No
Commercial use: Yes
May be cached: Yes
May be redistributed: Yes
Derived data allowed: Yes

Evidence

"license": "Northern Powergrid Open Data Licence v1.0"northernpowergrid.opendatasoft.com/api/explore/v2.1/catalog/datasets/… (opens the operator’s site) · read 25 Sep 2026
Exploit the Information commercially and non-commercially for example, by combining it with other Information, or by including it in your own product or application.northernpowergrid.opendatasoft.com/p/opendatalicence/ (opens the operator’s site) · read 25 Sep 2026
Acknowledge Northern Powergrid as the source of the Information by including the following attribution statement “Supported by Northern Powergrid Open Data”northernpowergrid.opendatasoft.com/p/opendatalicence/ (opens the operator’s site) · read 25 Sep 2026

Methodology

2 version(s)

Northern Powergrid LTDS Capacity Heatmap

gb_npg_ltds_heatmap_2026 · v2026-05 (LTDS May 2026, data_processed 2026-07-06)

NPg's implementation of the Ofgem LTDS Capacity Heatmap (Capacity Heatmaps Appendix 1 – Information Model): firm, available and reverse-power-flow capacity per substation in MVA, with contracted demand and generation. NPg publishes no method statement for it beyond the standard's definition; how it relates to NPg's own heat-map headroom (in MW for generation) is not stated, so the two are not comparable.

Capacity basis: operator calculated
Network state: unknown
Binding: No
Additive across assets: No — do not sum these figures
The method accounts for: reserved: not stated · allocated: not stated · pre-reserved: not stated · pending requests: not stated
Comparability class: gb_npg_ltds_heatmap
Documentation: Operator’s method (opens the operator’s site)

Northern Powergrid past connection activity (LTDS Capacity Heatmap)

gb_npg_ltds_heatmap_activity_2026 · v2026-05

Past connection activity (budget estimates, offers made, offers accepted; count and MVA) as the standard names it. NPg's dataset flattens it into one multivalued text field, which is kept verbatim on the asset and produces no values today; this methodology is what any activity figure NPg publishes under the standard's own field names would be served under.

Capacity basis: operator published
Network state: unknown
Binding: No
Additive across assets: No — do not sum these figures
The method accounts for: reserved: not stated · allocated: not stated · pre-reserved: not stated · pending requests: not stated
Comparability class: gb_npg_connection_activity
Documentation: Operator’s method (opens the operator’s site)

How the publication maps to the model

availability types: ["available","total","contracted"]
binding: false
directions: ["offtake","injection"]
firmness: ["firm","unknown"]
geometry precision: exact
includes reserved projects: null
non additive: true
notes: ["Schema known from the public metadata, values never seen: the Ofgem standard's substation fields flattened to one record per substation, field names lower-cased by Opendatasoft (mrid, demandavailablecapacity, …), voltages as one number, connection activity as one multivalued text field (pastconnectionactivity) whose format is unknown and which is therefore kept verbatim as an attribute, not parsed into values.","Values are read as the standard defines them, in MVA: available, firm (served as `total`) and reverse-power-flow capacity per direction, plus contracted demand and generation. NPg describes none of the fields, so the headroom's firmness is unknown.","Each record carries odp_primary_name, the key of NPg's own heat-map table: offered as identifier npg_odp_primary_name so that both publications of a site resolve to one asset.","NPg's mRID format is unknown, so it keys assets but is not offered for cross-source matching."]
spatial scope: substation
technologies: ["generic_load","generic_generation"]
units: ["MVA"]

Query this source

$ curl "https://api.gridcapacityapi.com/v1/capacity/search?source=gb_npg_ltds_heatmap&limit=20" \  -H "Authorization: Bearer gc_live_..."