Introduction
Hornsea 3 is the world's largest offshore wind farm — a 2.85GW Ørsted project in the North Sea, approximately 120 kilometres off the Yorkshire coast, capable of powering 3.3 million homes. In April 2026, Hornsea 3 connected its first subsea export cables to the UK grid, marking a major construction milestone in a project that has been drawing specialist contractors, subsea engineers, turbine technicians, and logistics workers to the Grimsby and East Yorkshire area for several years.
The operations and maintenance (O&M) hub for Hornsea 3 is based at ABP Grimsby docks. The construction port is at the Port of Blyth and Humberside. Between cable installation, monopile installation, turbine erection, and ongoing commissioning, the labour demand in the Grimsby, Cleethorpes, Immingham, and Hull corridor is significant and sustained — not a flash of activity but a rolling programme measured in years.
If you are a contractor, marine engineer, turbine technician, or project worker based in the Hornsea 3 supply chain, finding good accommodation in Grimsby or the wider DN/HU postcode area is a genuine challenge. The area's holiday let market was not built for rotating shift workers or 6-week offshore rotation accommodation. Offer2Stay's reverse marketplace changes that dynamic: post your requirements — the dates, location, budget, and specifics like blackout blinds for offshore rotations, early starts, flexible extensions — and verified local hosts send you tailored offers.
Hornsea 3: Scale, Timeline, and Contractor Demand
Ørsted's Hornsea 3 offshore wind farm represents an £11.2 billion investment. The key construction facts:
- Capacity: 2.85 GW — the world's largest single offshore wind farm
- Turbines: 231 Siemens Gamesa 14MW turbines
- Monopiles: Delivered from Spain (first arrived February 2026, as confirmed by Offshore Wind Biz)
- Export cables: First subsea cable connected to the UK grid in April 2026 (Marine Insight, April 2026)
- O&M hub: ABP Grimsby — the base for ongoing operations and maintenance throughout the wind farm's 25-year operational life
The O&M base alone will require a rotating pool of offshore wind technicians, logistics coordinators, vessel crew, and support staff based in Grimsby for the project's entire operational lifespan. On top of that, ongoing cable works, commissioning activities, and support vessel operations continue to draw temporary workers through 2026 and into 2027.