Project · Grid & HVDC · Netherlands

TenneT 2GW offshore grid programme

The backbone grid build-out behind essentially every North Sea wind farm coming online this decade — a long, steady programme of platform fabrication and offshore installation work spread across multiple Dutch main contractors.

Checked by hand against the sources below (2026-10-20).

  1. Engineering (done)
  2. Fabrication (now)
  3. Transport & installation (now)
  4. Hook-up (next)
  5. Commissioning
  6. Operation

Now Fabrication · Transport & installation (reported: fabrication / installation (second 2GW jacket, IJmuiden Ver Gamma, in construction since September 2026; first jacket, IJmuiden Ver Beta,…)

Next Hook-up · H2 2028 (IJmuiden Ver Beta topside H2 2028, as reported)

Roles Construction & supervision · Commissioning & start-up · QA/QC & HSE · Role groups per phase: our planning assumption from the Crew Forecast model.

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Their rate stays; our fee goes on top: 20% → 15% → 12%. Open book →

Who works on it as the sources name them

  • TenneTOperator / ownerdeveloper/grid operator, FID holder for the 14-platform programme
  • Heerema Marine ContractorsTransport & installationtransport & installation framework agreement, awarded ~60% of lots; building a new float-over barge for 30,000+ tonne substations, deploying SSCV Sleipnir
  • AllseasTransport & installationtransport & installation framework agreement, remaining lots
  • GE Vernova-Seatrium consortiumEPC / main contractormain contractor for the IJmuiden Ver Beta, IJmuiden Ver Gamma and Nederwiek 2 converter platforms
  • Heerema Fabrication GroupFabrication / constructionbuilds the jackets for those three converter platforms in Vlissingen, commissioned by GE Vernova–Seatrium

Who else needs construction people in Northwest Europe

May 2027 is busier than usual here: 56 projects and stops in this phase, against a typical 25.5 a month.

46Oct 2026381513Jan 2027162336Apr 2027565346Jul 20274034
announced projectsplanned stopstypical phase length, not announcedas of 2026-10-24
How we count

Counted from the project database (sources on each project page) and planned power-station stops (Nord Pool UMM, Elexon, Elia). Announced: the phase falls in the month by announced dates, or a stop's own dates. Typical: only the start is known, so the project counts for at most the typical length of that phase for its type (Crew Forecast model). Operation is not counted. Role groups per phase are our planning assumption. Counts, not people.

Reserve people now

Kind
Grid & HVDC
Country
Netherlands, Germany
Size
At least 14 platforms of 2 GW each by 2032 — at least 8 in the Netherlands and 6 in Germany
Operator
TenneT
Position
52.60°N 3.70°E, approximate

On the Radar each linked to its source

  1. Source checked 18 September 2026TenneT 2GW programme: 14 offshore grid connections by about 2032
  2. Source checked 18 September 2026Heerema begins building the jacket for IJmuiden Ver Gamma
  3. 31 August 2026Jacket for TenneT's IJmuiden Ver Beta platform takes shape in Vlissingen
  4. 3 August 2026Larsen & Toubro and Hitachi Energy sign 2GW framework agreement with TenneT
  5. 17 May 2023TenneT awards 2GW platform transport and installation to Heerema and Allseas

Sources

  1. TenneT awards transport and installation slots for 2GW offshore platforms to Allseas and HeeremaTenneT (company newsroom) · published 2023-2024 · read 2026-09-19
  2. Heerema to Build New Float-Over Barge for TenneT's 2GW Program Offshore PlatformsHeerema Marine Contractors (company newsroom) · published 2025-01 · read 2026-09-19
  3. Construction starts on TenneT's second 2GW jacketOcean Energy Resources · published 2026-09-18 · read 2026-09-19
  4. TenneT awards contracts to Allseas and Heerema for 2GW offshore platformsNS Energy · published 2023-05-18 · read 2026-10-08
  5. Heerema signs framework agreement for transportation and installation of TenneT's 2GW programHeerema Marine Contractors (company newsroom) · published 2023-05-17 · read 2026-10-20
  6. Jacket for TenneT's IJmuiden Ver Beta Platform Starts Taking ShapeoffshoreWIND.biz · published 2026-08-31 · read 2026-10-08
  7. Mammoet supporting Heerema with offshore wind topsides floatoverOffshore Magazine · published 2025-07-08 · read 2026-10-08
  8. Equity transactions with APG, GIC, NBIM and KfW mark completion of TenneT Germany’s new ownership structureTenneT Germany · published 2026-07-03 · read 2026-10-20
  9. TenneT 2GW offshore grid programme - source pageTenneT / trade press (see field source_url) · read 2026-09-19
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