Horns Rev 3
Located 25-40 km off the west coast of Jutland, covering 88 km2. Vattenfall won 2015 tender at 77 ore/kWh. O&M port at Hvide Sande.
DenmarkTechnology
Capacity
407 MW ◆
Turbines
49 × 8.3 MW ◆
Model
Mhi Vestas V164 8-3 ◆
Foundation
Monopile ◆
Site & conditions
Site rights
Seabed rights held ∴
Origination
Horns Rev 3 offshore wind tender · 2015 ·
Water depth
11–19 m ◆
Distance from shore
25 km ◆
Wind speed
10.0 m/s @ 100 m ≈
Revenue & grid
Offtake
CfD · 10.31 EUR_cent_per_kWh ◆
Grid
Secured · 2019 ◆
Connection
Endrup 400 kV substation (220 kV HVAC export cable, ~45 km … ◆
Schedule
FID
Jun 2016 ◆
COD
2019-Q3 ◆
Project timeline & ownership verified milestones on the spine · ownership from Hafrok’s transactions record
Origination · 2015-02
Horns Rev 3 offshore wind tender
- Awarded to
- Vattenfall Vindkraft A/S
- Basis
- integrated tender
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: 2018→2019→2019→2019-08 · 4 recorded revisions · slipped +1.1 yr (first announced 2018)
Revenue & offtake contract duration and price levels · money of the day
400 MW contracted — tender award
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 standing50≈49 turbines + 1 platform expected · every expected structure seen
Surveyed2026-09-01≈from 119 satellite passes
Built2017-10 → 2019-Q3offshore 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, southbound pass
Farm covered100%≈the whole farm lies inside the image
Structures ringed50 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 Esbjerg ◆·installation · quay 10000 m · crane 300 t · draft 15 m
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 (50)seen recently, not yet confirmed (0)probably a substation platform (a larger structure than a turbine; the register above has the facts)farm boundary
Grid connection
from Hafrok’s substation, converter and cable registers
Offshore platforms · 1
Offshore substationHorns Rev C (Horns Rev 3 OSS)·33/220 kV · in service 2018 · owner Energinet (Danish TSO)
Grid connection · ready in time?
when each part of the grid connection is due, against the start date the developer states (black line) · a bar spans the whole year, quarter or month the source gives
installed or in serviceexpected deliveryearlier date that was later moved
Sources & verification
17/18 fields verified · rests on 11 sources (11 primary) · ◆ 9 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.
Regulator1
[4]
Danish Energy Agency (Energistyrelsen)2015-02◆ DEA Horns Rev 3 result
“With a price of 10.31 Eurocent per. kWh., the new offshore wind farm, Horns Rev 3, will provide power much cheaper than other recently established offshore wind farms in Denmark and abroad.”
supportsMechanismStrike / priceDetail
Operator6
[1]
Vattenfall2025◆ Power plants: Horns Rev 3 - Vattenfall
“Horns Rev 3: 407 MWe, 49 turbines, located in the North Sea 25-40 km off the coast of Jutland. Ownership: 100% Vattenfall. Status: In Operation. Foundation work began October 2017; official inaugurati…”
supportsoperatorTurbinesTotal capacityDistance from shore
[3]
Vattenfall2015-02-27◆ Vattenfall wins concession for Horns Rev…
“Vattenfall Wind Power has won the concession to build and operate the offshore wind farm Horns Rev 3 with a total capacity of 400 MW. ... Vattenfall Wind Power has won the concession to build and oper…”
supportsConsentMechanismStrike / priceDetailConsent granted
[8]
Vattenfall2017-10-20◆ Construction begins on Horns Rev 3
“Construction work is set to begin on Denmark's largest offshore wind farm, Horns Rev 3, in October. Installation of the first of 49 steel monopile foundations in the North Sea. Each foundation measure…”
supportsOnshore constructionOffshore constructionFoundation
[9]
Vattenfall2018-07-19◆ First turbine installed at Vattenfall’s …
“The first of 49 turbines was installed in the North Sea off Denmark's west coast. With 406 MW installed capacity, the wind farm will increase Danish annual electricity production from wind by about 12…”
supportsTurbinesModelUnit capacityinstallation
[10]
[11]
Vattenfall2019-08-22◆ HRH the Crown Prince of Denmark inaugura…
“HRH Crown Prince of Denmark officially opened Denmark's largest offshore wind farm, Horns Rev 3, on August 22, 2019. Capacity: 407 MW. 49 MHI Vestas turbines of 8.3 MW each, 187 metres tall. Located 2…”
supportsCOD historyTurbinesUnit capacityTotal capacityWater depth
Auction results1
[16]
AURES II / DTU2026-06-22◆ dk-horns-rev-3-aures
AURES II Denmark case study: two-sided sliding-premium CfD vs day-ahead spot, FLH cap, DKK 100m guarantee, support-volume clawback
supportsTender award · Horns Rev 3 offshore wind tender
Trade press3
[12]
Pacific Northwest National Laboratory (Tethys)2024◆ Horns Rev 3 | Tethys
“Horns Rev 3: 406.7 MW total installed capacity; 49 turbines; V164-8.3 turbine model; monopile foundations; water depth 11-19 m; site area 88 km2; construction start May 1, 2017; operation start August…”
supportsCommercial operationTurbinesModelUnit capacityTotal capacity+6 more
[13]
Windtech International2016-06-02
Press report — cited, not quoted; read it at the source link.
supportsFinal investment decision
[14]