Kentish Flats Extension
Extension to Kentish Flats (2005). 49.5 MW actual capacity (rounded to 50).
United KingdomTechnology
Capacity
50 MW ◆
Turbines
15 × 3.3 MW ◆
Model
Vestas V112 3-3 ◆
Foundation
Monopile ◆
Site & conditions
Site rights
Seabed rights held ∴
Origination
Crown Estate Round 1 & 2 site extensions (2010) · 2010 ·
Water depth
5–5 m ◆
Distance from shore
7.8 km ◆
Wind speed
8.7 m/s @ 100 m ≈
Revenue & grid
Offtake
Other ◆
Grid
Secured · 2015 ◆
Connection
Red House Farm substation, Herne Bay. Export cables come ashore … ◆
Schedule
FID
Nov 2013 ◆
COD
2015 ◆
Project timeline & ownership verified milestones on the spine · ownership from Hafrok’s transactions record
Origination · 2010-05
Crown Estate Round 1 & 2 site extensions (2010)
- Awarded to
- Vattenfall Wind Power
- Basis
- seabed award
From the auction results — the round that created the project.
Dashed tick marks today (9 Sep 2026). The teal diamond on the spine is origination — the seabed award or round that created the project. Every other ownership event lives in the band below: one station per recorded deal, dated at its label, in deal order rather than to calendar scale. Secondary trades appear only at the interchanges; grey lines are parties whose entry or exit Hafrok’s record does not hold.
Announced-COD history: 2015-Q3→2015 · 2 recorded revisions · held (announced 2015-Q3, unchanged)
Revenue & offtake the regime the project was built under
Offtake regime on record
A built project sells its power under the contract or support regime it was financed with; it is not expected to bid into new government offtake rounds. Where the record does not yet name that regime, the row says so rather than guessing.
Installation how the build is going · from satellite counts and Hafrok’s registers
Satellite survey
the farm as it stands, counted from satellite radar images · built before the count began, so there is no build to chart
Satellite survey
Structures standing16≈15 turbines + 0 platforms expected · 1 more than expected — a met mast, a platform not on the register, or a position the survey missed
Surveyed2026-09-01≈from 118 satellite passes
Built2015-05 → 2015offshore construction to start of operation, from the record
Hafrok counts the structures standing in the sea from satellite radar images (≈) and reads the count against the turbines and platforms on record. The farm was built before this count began, so the images show it complete; they cannot date its construction. Rows marked with a dot (·) come from Hafrok’s own registers.
Satellite image
Image taken2026-09-07≈Copernicus Sentinel-1 radar satellite, northbound pass
Farm covered100%≈the whole farm lies inside the image
Structures ringed16 confirmed · 0 not yet confirmed≈as counted on 2026-09-01 · the image is newer than the count, so a bright spot without a ring may be a structure not yet counted
Construction ports
PortPort of Ramsgate ◆operations
Contains modified Copernicus Sentinel data 2026, processed by ESA and by Microsoft Planetary Computer.
Latest satellite radar image · 2026-09-07
a radar picture, not a photograph: the sea is dark, steel is bright · black is beyond the edge of the image
confirmed structure (16)seen recently, not yet confirmed (0)probably a substation platform (a larger structure than a turbine; the register above has the facts)farm boundary
Sources & verification
17/18 fields verified · rests on 10 sources (3 primary) · ◆ 8 documents held
◆Verified≈Modelled◇Sourced∴Inferred⌁Convention○Unverified∅No source·Derived
Numbers are stable citation ids — grouped by source class, so they are not consecutive.
Regulator2
[1]
legislation.gov.uk / DECC2013-02-19◆ The Kentish Flats Extension Order 2013 (…
"A nationally significant infrastructure project ... comprising an offshore wind turbine generating station with an installed capacity of up to 51 MW being an extension to the existing Kentish Flats o…
supportsConsentFoundationDistance from shoreConsent granted
[12]
Department for Energy Security and Net Zero2026-05-06◆ Renewable Energy Planning Database (REPD…
“REPD Q1 2026 quarterly extract — Ref ID 2504: Site Name "Kentish Flats 2", Development Status "Operational", Installed Capacity 49.5 MWelec, Operator "Vattenfall"”
supportsRegister entry
Operator2
[3]
Vattenfall2025-01-01◆ Power plants: Kentish Flats Extension - …
"Kentish Flats Extension ... 50 MWe ... 15 turbines supplied by Vestas ... more than 7 kilometres off the coast of Herne Bay and Whitstable ... In Operation ... Offshore and onshore electrical works b…
supportsOnshore constructionOffshore constructionCommercial operationCOD historyTurbines+4 more
[10]
Trade press6
[4]
[5]
[7]
CleanTechnica2015-09-16◆ Kentish Flats Extension Reaches Full Pow…
"Vattenfall announced that the Kentish Flats Extension had begun generating electricity for the first time on August 29, at 14:05, from turbine number KE02 ... September 12, 2015 before 17:00 — Vatten…
supportsFirst power
[8]
[9]
[11]