# TenneT, Hitachi Energy, and Larsen & Toubro Finalize Engineering Release for 2 GW LanWin 5 and Nederwiek 3 Platforms

> European transmission system operator TenneT has executed full project execution releases under its 2 GW offshore cooperation framework with Hitachi Energy and Larsen & Toubro (L&T), authorizing detailed engineering and procurement for LanWin 5 (Germany) and Nederwiek 3 (Netherlands).

- **Publish Date:** 2026-09-12
- **Category:** transmission-substations
- **Reading Time:** 5 min
- **Original Source Citation:** [TenneT TSO B.V. & Hitachi Energy Press Release](https://www.tennet.eu/news/lanwin5-nederwiek3-2gw-offshore-converter-framework-execution-september-2026)
- **Tags:** TenneT, Hitachi Energy, L&T, 2GW Program, LanWin 5, Nederwiek 3, 525 kV, HVDC
- **Canonical URL:** https://voltformer.com/news/tennet-hitachi-energy-lt-execute-lanwin5-nederwiek3-2gw-offshore-converters
- **Markdown Source:** https://voltformer.com/news/tennet-hitachi-energy-lt-execute-lanwin5-nederwiek3-2gw-offshore-converters.md

## Standardized 525 kV HVDC Modular Converter Platforms

The multi-billion-euro agreements cover the complete engineering, procurement, and fabrication of two identical 2 GW standardized offshore converter stations and their onshore grid-tie counterparts.

Each offshore platform will deploy Hitachi Energy’s high-power Voltage Source Converters (VSC) and 525 kV gas-insulated DC switchgear, while L&T will fabricate the 30,000-tonne topside and jacket structures at its Hazira yard.

## Harmonizing North Sea Supply Chains

By standardizing equipment designs across Dutch and German territorial waters, TenneT reduces delivery lead times by 18 months and establishes mutual spare-part interchangeability.

LanWin 5 and Nederwiek 3 are scheduled for grid energization in 2030 and 2031, directly supporting the Esbjerg and Ostend intergovernmental North Sea energy declarations.

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