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Distribution / SSEN / Grid supply point

COWLEY GSP

Grid supply point in Southern England (SEPD)

SSEN Embedded Capacity Register, September 2026 edition

71sites of 1 MW and over
2 GWcapacity
0.4 GWconnected (29 sites)
1.6 GWaccepted to connect (42 sites)

Capacity by technology

TechnologySitesCapacityConnectedAccepted to connect
Solar511.2 GW0.2 GW1 GW
Storage6435 MW–435 MW
Other or not stated7325 MW113 MW212 MW
Bioenergy and waste635 MW27.4 MW7.6 MW
Gas and other fossil111.3 MW–11.3 MW

Storage capacity in MWh: not published by SSEN.

Each site is grouped by its first energy source, as the register names it.

How busy is each primary substation?

Each primary substation at this grid supply point in the September 2026 edition, under the bulk supply point its register gives. Select a row to see its sites.

Site, company and substation names are shown as they appear in the registers, including capitalisation.

Primary substationBulk supply pointSitesConnectedAccepted to connect
WITNEY2–97.4 MW
WITNEY233.3 MW–
WITNEY19.5 MW–
WITNEY19.4 MW–
WITNEY2–5.6 MW
WITNEY11.9 MW–
WITNEY5–393 MW
COWLEY LOCAL36.1 MW13.7 MW
COWLEY LOCAL315 MW–
COWLEY LOCAL2–7.3 MW
COWLEY LOCAL1–2.9 MW
COWLEY LOCAL5–392 MW
DRAYTON133.3 MW–
DRAYTON214.3 MW12.5 MW
DRAYTON120.2 MW–
DRAYTON113.4 MW–
DRAYTON111.2 MW–
DRAYTON19.5 MW–
DRAYTON1–7.6 MW
DRAYTON11.6 MW–
DRAYTON3–124 MW
YARNTON29.5 MW10 MW
YARNTON1–13.2 MW
YARNTON14.8 MW–
YARNTON14.5 MW–
YARNTON14.1 MW–
YARNTON11.9 MW–
YARNTON1–1 MW
YARNTON622 MW105 MW
OXFORD2–99.9 MW
OXFORD1–20 MW
HEADINGTON112.4 MW–
HEADINGTON19.5 MW–
HEADINGTON17.1 MW–
HEADINGTON16.8 MW–
HEADINGTON1–1.9 MW
HIGH WYCOMBE116.2 MW–
Not stated895 MW325 MW

Not found in SSEN's September 2026 edition

19 sites last found at this grid supply point were not found in this edition by their MPAN, grid reference or name and postcode. QueueWatch keeps their pages for six months and does not say whether they have left the register.

What changed recently

Changes to the sites here found in both of two consecutive monthly editions, the latest first.

August 2026 edition to September 2026 edition: 69 sites matched. 5 sites at this grid supply point couldn't be matched between the two editions, because their details changed or they appear in only one.

  • WHEATLEY GAS GENERATIONDecember 2023 editionCustomer changed from SAVILLS (UK) LTD to WHEATLEY POWER EXPORT
  • WHEATLEY GAS GENERATIONDecember 2023 editionStatus changed from “accepted to connect” to “connected”
  • BROOK FARM PVNovember 2023 editionCapacity changed from 8.421 MW to 6.84 MW
  • FLIT FARM PVNovember 2023 editionCapacity changed from 21.053 MW to 9.5 MW
  • FLIT FARM PVNovember 2023 editionCustomer changed from FLIT SOLAR PARK LIMITED to GREENCOAT SOLAR ASSETS II LIMITED
  • ROWLES FARM PVNovember 2023 editionCapacity changed from 10.526 MW to 9.5 MW
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How power reaches a site

A grid supply point (GSP) is where the national grid hands power to the local network. A bulk supply point (BSP) steps it down to a lower voltage for an area. A primary substation steps it down again for the streets and sites nearby. Most small and medium sites connect at a primary. Not every network has all three levels.