Green Volt
INTOG TOG category. Off Aberdeenshire coast. Will provide power to offshore oil & gas platforms and UK grid. Reduce emissions by 1Mt CO2/yr.
Status
Advanced Developmentlifecycle stage
ExpectedHafrok completion outlook
Ownership
FLFlotation Energy — 50% ◆
Vårgrønn — 50% ◆Location
United KingdomNorth Sea
Technology
Capacity
560 MW ◆
Turbines
35 × 16 MW ◇
Foundation
Floating ◇
Site & conditions
Site rights
Seabed rights held ∴
Origination
INTOG Leasing (Innovation and Targeted Oil & Gas) · 2023 ·
Water depth
93–114 m ≈
Distance from shore
80 km ◇
Wind speed
10.6 m/s @ 150 m ≈
Revenue & grid
Offtake
CfD · AR6 · £139.93/MWh ◆
Grid
Applied ◆
Connection
New Deer 400kV Substation — NESO TEC register entry at Scoping … ◆
Schedule
FID
Not taken
COD · announced
2029 ◆
COD · Hafrok
2029 expected
Delivery outlook modelled by Hafrok · calibrated on delivered projects
2029
expected year of commercial operation
Chance of delivery
≈81%
estimated chance this project reaches commercial operation
Advanced Development projects complete ≈75% of the time on Hafrok's record. A secured offtake contract puts this one well above that; its size and technical complexity weigh only slightly against it.
COD outlook
If it completes, when — Hafrok’s probability by year (teal)
| Year | Probability |
|---|---|
| 2028 | 3.9% |
| 2029 (expected) | 50.2% |
| 2030 | 29.5% |
| 2031 | 10.6% |
| 2032 | 3.8% |
| 2033 | 1.4% |
| 2034 | 0.6% |
How Hafrok got this date
1
Starting point: the last dated milestone
Consent granted in
2024. From there Hafrok adds how long similar projects (floating, in established offshore-wind markets) took to reach commercial operation, measured on projects that have delivered.2
Typical timing
Starting point plus the typical remaining time gives a middle estimate of
2029; the faster quarter of similar projects would be done by 2027, the slower quarter not until 2030.3
Result
Expected commercial operation
2029, likely range 2027–2030 (the middle half of outcomes for similar projects). The developer's announced date falls inside that likely range, so the announced date is adopted.4
Year-by-year chart
The bars spread that estimate across years using how similar projects actually slipped against their dates — more often late than early, which is why the bars lean right.
5
Chance of delivery — separate from timing
Start from the share of Advanced Development projects that went on to complete — ≈75%, measured on Hafrok's record of delivered and abandoned projects, with an allowance held back where that record cannot yet speak (projects still unresolved, changed market conditions). Consented projects have historically completed at very high rates, but the 2023–25 downturn showed consented-but-unfinanced projects can still fail — the estimate holds back for the offtake and financing gates still ahead. Then adjust for this project's own evidence — offtake, market, size, technical complexity — to ≈81%, which rates it
Expected on Hafrok's four-step delivery scale (Delivering · Expected · Prospective · Fragile).Project timeline & ownership verified milestones on the spine · ownership from Hafrok’s transactions record
Origination · 2023-03
INTOG Leasing (Innovation and Targeted Oil & Gas)
- Awarded to
- Flotation Energy
- Basis
- seabed award
From the auction results — the round that created the project.
Dashed tick marks today (9 Sep 2026). The ▲ below the spine is the developer-announced COD. 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.
Revenue & offtake contract duration and price levels · money of the day
CfD-backed offtake
● CfD · AR6
Price£139.93/MWh ·Basis2012 real · CPI-indexed
Capacity400 MWAwardedSep 2024Term15 yrs · delivery 2028/29
Money-of-the-day values computed by Hafrok from the United Kingdom CPI index, 2012 real base — actual to 2026-07, then an assumed +2.0%/yr (central-bank target). Cfd terms run 15 years from start of generation in the contracted delivery year.
Contract price over time · £/MWh
solid = actual CPI indexation · dashed = assumed +2.0%/yr
CfD · AR6
Installation how the build is going · from satellite counts and Hafrok’s registers
Installation not started
nothing to count yet: the satellite tracker begins when offshore construction does
Installation · on record
StageAdvanced Development
Offshore constructionnot started
Expected start of operation2029
Sources & verification
6/16 fields verified · rests on 14 sources (8 primary) · ◆ 7 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.
Regulator4
[4]
Marine Scotland2024-04-19◆ Section 36 Consent - Green Volt Offshore…
“Application submitted: 2023-01-20 ... Licence granted: 2024-04-19. Section 36 Consent for an offshore wind farm located east of the Aberdeenshire coast. Applicant: Green Volt Offshore Windfarm Ltd.”
supportsConsentConsent granted
[5]
DESNZ2024-09-03◆ Contracts for Difference Allocation Roun…
“Green Volt Offshore Windfarm (GV01) NJ830445 Scotland GREEN VOLT OFFSHORE WINDFARM LTD Floating Offshore Wind 400.00 139.93 2028/29 Pot 2”
supportsCommercial operationMechanismStrike / priceDetail
[14]
Department for Energy Security and Net Zero2026-05-06◆ Renewable Energy Planning Database (REPD…
“REPD Q1 2026 quarterly extract — Ref ID 11851: Site Name "Green Volt - Offshore Wind Farm", Development Status "Awaiting Construction", Installed Capacity 560 MWelec, Operator "Flotation Energy / Vårg…”
supportsRegister entry
[16]
Scottish Government Marine Directorate (MD-LOT)2026-08-23◆ Scottish MD-LOT marine projects register…
“Register row "Green Volt Offshore Wind Farm – East of Aberdeenshire Coast" (key ml/green-volt-offshore-windfarm): Application stage "Application", type "Renewables - Wind".”
supportsRegister entry
Operator3
[3]
NESO2026-06-12◆ NESO Transmission Entry Capacity (TEC) R…
“Green Volt Offshore Windfarm,Green Volt Offshore Windfarm Ltd,New Deer 400kV Substation,2,0,260,560,31/10/2033,Scoping,Direct Connection,SHET,Demand;Wind Offshore”
supportsStatusConnection point
[6]
Offshore Wind Scotland2024-04-22
“Green Volt is 50% owned by Flotation Energy and 50% by Vargronn ... up to 560 MW of renewable energy capacity.”
supportsTotal capacity
[15]
National Energy System Operator (NESO)2026-07-21◆ NESO Transmission Entry Capacity (TEC) R…
“NESO TEC Register, edition 21 July 2026 - PRO-001469-1: "Green Volt Offshore Windfarm", Status "Scoping", MW Connected 0, Effective From 2029-03-31, Customer "Green Volt Offshore Windfarm Ltd"; PRO-00…”
supportsRegister entry
Auction results1
[17]
DESNZ (gov.uk)2024-09◆ cfd-ar6-results-2024
New offshore wind (Pot 3) GBP 58.87, 2028/29: Hornsea Project Four 2,400.00 MW; East Anglia Two Phase 1 963.07 MW. Offshore Wind Permitted Reduction GBP 54.23, 2027/28: Inch Cape A 177.41 / B 88.70 MW…
supportsCfD · AR6
Trade press4
[8]
Green Volt2025
“Flotation Energy and Vårgrønn submitted a leasing application under the Crown Estate Scotland's INTOG Leasing Round”
supportsoperatordeveloper
[11]
[12]
[13]
Unverified import1
[1]
Encyclopaedic1
[9]