Substation · 400 kV · gsp

Cowley GSP

SSEN Distribution · England / SEPD, United Kingdom

Latest published values

4 served · 0 withheld

Each row is what the operator’s latest published dataset reports for one combination of direction, technology, measure, firmness and horizon. Hosting-capacity figures are indicative and reflect what operators publish. They are not a connection offer; only the operator can confirm capacity for a specific request.

Latest published capacity values, one row per series
Direction	Technology	Measure	Value	Firmness	Horizon	Source date
Injection	Generation (any)	Available	—	Unknown	Now (snapshot)	11 Mar 2026
Injection	Generation (any)	Connected	388.95 MW	Unknown	Now (snapshot)	11 Mar 2026
Injection	Generation (any)	Contracted	818.25 MW	Unknown	Now (snapshot)	11 Mar 2026
Offtake	Battery	Contracted	162.59 MVA	Unknown	Now (snapshot)	11 Mar 2026
Offtake	Load (any)	Available	—	Unknown	Now (snapshot)	11 Mar 2026
Offtake	Load (any)	Contracted	577.78 MVA	Unknown	Now (snapshot)	11 Mar 2026

SSEN Distribution; Generation Availability and Network Capacity — Headroom Dashboard Data; https://data.ssen.co.uk/@ssen-distribution/generation-availability-and-network-capacity; CC BY 4.0 (last updated 2026-03-11)

What each value means

Methodology, both clocks, provenance and rights

Injection · Generation (any) · Available

—

Published in MW; no MW figure is derived from it.

Granted

The operator's latest published dataset reports no value (published as unknown) under methodology gb_ssen_headroom_dashboard_2025.

Firmness: Unknown
Horizon: Now (snapshot)
Methodology: gb_ssen_headroom_dashboard_2025SSEN Generation Availability and Network Capacity — Methodology Statementbasis operator calculated · network state unknown · comparability class gb_ssen_headroom_dashboardNot additive across assets. The method accounts for reserved: not stated · allocated: not stated · pre-reserved: not stated · pending requests: not stated
Operator’s date: 11 Mar 2026
Retrieved / confirmed: 2026-09-26 02:46 UTClast confirmed unchanged 2026-09-26 02:47 UTC
Source health: Healthy
Provenance: gb_ssen_headroom_dashboardrecord E - COWL - 01 · payload sha256 d78760aaac40…Operator’s publication (opens the operator’s site)
Licence: CC BY 4.0Attribution: SSEN Distribution; Generation Availability and Network Capacity — Headroom Dashboard Data; https://data.ssen.co.uk/@ssen-distribution/generation-availability-and-network-capacity; CC BY 4.0 (last updated 2026-03-11)
Decision context: Not binding · indicative · a formal connection study is required
Operator note: constraint: Substation Thermal Capacity
Operator note: rag status: Red
Operator note: source field: estimated_generation_headroom__mw_
Operator note: source label: N/A
Operator note: technical limits agreed at gsp: Yes

Injection · Generation (any) · Connected

388.95 MW

Granted

The operator's latest published dataset reports 388.95 MW under methodology gb_ssen_headroom_dashboard_2025.

Firmness: Unknown
Horizon: Now (snapshot)
Methodology: gb_ssen_headroom_dashboard_2025SSEN Generation Availability and Network Capacity — Methodology Statementbasis operator calculated · network state unknown · comparability class gb_ssen_headroom_dashboardNot additive across assets. The method accounts for reserved: not stated · allocated: not stated · pre-reserved: not stated · pending requests: not stated
Operator’s date: 11 Mar 2026
Retrieved / confirmed: 2026-09-26 02:46 UTClast confirmed unchanged 2026-09-26 02:47 UTC
Source health: Healthy
Provenance: gb_ssen_headroom_dashboardrecord E - COWL - 01 · payload sha256 d78760aaac40…Operator’s publication (opens the operator’s site)
Licence: CC BY 4.0Attribution: SSEN Distribution; Generation Availability and Network Capacity — Headroom Dashboard Data; https://data.ssen.co.uk/@ssen-distribution/generation-availability-and-network-capacity; CC BY 4.0 (last updated 2026-03-11)
Decision context: Not binding · indicative · a formal connection study is required
Operator note: source field: connected_generation__mw_

Injection · Generation (any) · Contracted

818.25 MW

Granted

The operator's latest published dataset reports 818.25 MW under methodology gb_ssen_headroom_dashboard_2025.

Firmness: Unknown
Horizon: Now (snapshot)
Methodology: gb_ssen_headroom_dashboard_2025SSEN Generation Availability and Network Capacity — Methodology Statementbasis operator calculated · network state unknown · comparability class gb_ssen_headroom_dashboardNot additive across assets. The method accounts for reserved: not stated · allocated: not stated · pre-reserved: not stated · pending requests: not stated
Operator’s date: 11 Mar 2026
Retrieved / confirmed: 2026-09-26 02:46 UTClast confirmed unchanged 2026-09-26 02:47 UTC
Source health: Healthy
Provenance: gb_ssen_headroom_dashboardrecord E - COWL - 01 · payload sha256 d78760aaac40…Operator’s publication (opens the operator’s site)
Licence: CC BY 4.0Attribution: SSEN Distribution; Generation Availability and Network Capacity — Headroom Dashboard Data; https://data.ssen.co.uk/@ssen-distribution/generation-availability-and-network-capacity; CC BY 4.0 (last updated 2026-03-11)
Decision context: Not binding · indicative · a formal connection study is required
Operator note: source field: contracted_generation__mw_

Offtake · Battery · Contracted

162.59 MVA

Published in MVA; no MW figure is derived from it.

Granted

The operator's latest published dataset reports 162.59 MVA under methodology gb_ssen_headroom_dashboard_2025.

Firmness: Unknown
Horizon: Now (snapshot)
Methodology: gb_ssen_headroom_dashboard_2025SSEN Generation Availability and Network Capacity — Methodology Statementbasis operator calculated · network state unknown · comparability class gb_ssen_headroom_dashboardNot additive across assets. The method accounts for reserved: not stated · allocated: not stated · pre-reserved: not stated · pending requests: not stated
Operator’s date: 11 Mar 2026
Retrieved / confirmed: 2026-09-26 02:46 UTClast confirmed unchanged 2026-09-26 02:47 UTC
Source health: Healthy
Provenance: gb_ssen_headroom_dashboardrecord E - COWL - 01 · payload sha256 d78760aaac40…Operator’s publication (opens the operator’s site)
Licence: CC BY 4.0Attribution: SSEN Distribution; Generation Availability and Network Capacity — Headroom Dashboard Data; https://data.ssen.co.uk/@ssen-distribution/generation-availability-and-network-capacity; CC BY 4.0 (last updated 2026-03-11)
Decision context: Not binding · indicative · a formal connection study is required
Operator note: source field: contracted_bess_demand__mva_

Offtake · Load (any) · Available

—

Published in MVA; no MW figure is derived from it.

Granted

The operator's latest published dataset reports no value (published as unknown) under methodology gb_ssen_headroom_dashboard_2025.

Firmness: Unknown
Horizon: Now (snapshot)
Methodology: gb_ssen_headroom_dashboard_2025SSEN Generation Availability and Network Capacity — Methodology Statementbasis operator calculated · network state unknown · comparability class gb_ssen_headroom_dashboardNot additive across assets. The method accounts for reserved: not stated · allocated: not stated · pre-reserved: not stated · pending requests: not stated
Operator’s date: 11 Mar 2026
Retrieved / confirmed: 2026-09-26 02:46 UTClast confirmed unchanged 2026-09-26 02:47 UTC
Source health: Healthy
Provenance: gb_ssen_headroom_dashboardrecord E - COWL - 01 · payload sha256 d78760aaac40…Operator’s publication (opens the operator’s site)
Licence: CC BY 4.0Attribution: SSEN Distribution; Generation Availability and Network Capacity — Headroom Dashboard Data; https://data.ssen.co.uk/@ssen-distribution/generation-availability-and-network-capacity; CC BY 4.0 (last updated 2026-03-11)
Decision context: Not binding · indicative · a formal connection study is required
Operator note: rag status: Green
Operator note: source field: estimated_demand_headroom__mva_
Operator note: source label: N/A

Offtake · Load (any) · Contracted

577.78 MVA

Published in MVA; no MW figure is derived from it.

Granted

The operator's latest published dataset reports 577.78 MVA under methodology gb_ssen_headroom_dashboard_2025.

Firmness: Unknown
Horizon: Now (snapshot)
Methodology: gb_ssen_headroom_dashboard_2025SSEN Generation Availability and Network Capacity — Methodology Statementbasis operator calculated · network state unknown · comparability class gb_ssen_headroom_dashboardNot additive across assets. The method accounts for reserved: not stated · allocated: not stated · pre-reserved: not stated · pending requests: not stated
Operator’s date: 11 Mar 2026
Retrieved / confirmed: 2026-09-26 02:46 UTClast confirmed unchanged 2026-09-26 02:47 UTC
Source health: Healthy
Provenance: gb_ssen_headroom_dashboardrecord E - COWL - 01 · payload sha256 d78760aaac40…Operator’s publication (opens the operator’s site)
Licence: CC BY 4.0Attribution: SSEN Distribution; Generation Availability and Network Capacity — Headroom Dashboard Data; https://data.ssen.co.uk/@ssen-distribution/generation-availability-and-network-capacity; CC BY 4.0 (last updated 2026-03-11)
Decision context: Not binding · indicative · a formal connection study is required
Operator note: source field: contracted_demand_excl_bess__mva_

History

Served series only

Offtake · Load (any) · Contracted

current 577.78 MVA

26 Sep 2026range 577.78–577.78 MVA26 Sep 2026

1 published value, as a table

Observed from	Until	Value
26 Sep 2026	current	577.78 MVA

Time axis: when we observed each value, not the operator’s effective date.

Offtake · Battery · Contracted

current 162.59 MVA

26 Sep 2026range 162.59–162.59 MVA26 Sep 2026

1 published value, as a table

Observed from	Until	Value
26 Sep 2026	current	162.59 MVA

Time axis: when we observed each value, not the operator’s effective date.

Injection · Generation (any) · Connected

current 388.95 MW

26 Sep 2026range 388.95–388.95 MW26 Sep 2026

1 published value, as a table

Observed from	Until	Value
26 Sep 2026	current	388.95 MW

Time axis: when we observed each value, not the operator’s effective date.

Injection · Generation (any) · Contracted

current 818.25 MW

26 Sep 2026range 818.25–818.25 MW26 Sep 2026

1 published value, as a table

Observed from	Until	Value
26 Sep 2026	current	818.25 MW

Time axis: when we observed each value, not the operator’s effective date.

Through the API

$ curl "https://api.gridcapacityapi.com/v1/substations/sub_06gdq6zvvntx50b083a0jh18xw/capacity" \  -H "Authorization: Bearer gc_live_..."