ESTEYCO SA

Their core work

Esteyco is a Spanish engineering SME specializing in offshore wind energy foundations and installation systems. They design and develop self-installing, craneless offshore wind turbine substructures — including gravity-based foundations, telescopic towers, and floating spar platforms — that dramatically reduce the cost and complexity of offshore wind deployment. Their core engineering work targets the full support structure lifecycle: from precast concrete foundations that float to site and self-install, to deep-water floating systems with advanced mooring and cable solutions.

What they specialise in

How they've shifted over time

Esteyco's early H2020 work (2014–2017) concentrated on fixed-bottom offshore wind: craneless installation methods and self-buoyant concrete foundations for shallow-to-medium depth sites (ELISA, ELICAN). From 2019 onward, their focus shifted decisively toward floating offshore wind for deep water, including mooring systems, dynamic cables, floater design, and operations & maintenance optimization (FLOTANT, COREWIND). This trajectory mirrors the broader industry move from fixed foundations in shallow waters to floating platforms for deeper, more resource-rich offshore sites.

Esteyco is moving from fixed offshore foundations toward floating wind technology for deep water — positioning themselves at the frontier of Europe's floating offshore wind scale-up.

How they like to work

Esteyco operates predominantly as a project leader: they coordinated 3 of their 6 H2020 projects, including the two largest by budget (ELISA and ELICAN). They shift to a supporting role in larger, multi-partner initiatives like FLOTANT and COREWIND, where they contribute specialist engineering expertise as a participant or third party. With 241 unique partners across 29 countries, they maintain a broad European network despite being a relatively small company — a sign they are well-regarded enough to be invited into diverse consortia.

Esteyco has collaborated with 241 unique partners across 29 countries, reflecting a wide European network far beyond their Spanish base. Their involvement in both SME-led projects and large fusion/wind consortia gives them connections across industry, research, and infrastructure communities.

What sets them apart

Esteyco bridges the gap between civil/structural engineering and offshore wind energy — a combination that few SMEs offer. Their signature capability is designing concrete substructures that eliminate the need for expensive heavy-lift crane vessels during offshore installation, directly attacking one of the biggest cost drivers in offshore wind. They have progressed from concept (ELISA) through prototype (ELICAN, €5.1M) to participation in floating wind programs, demonstrating a credible technology maturation path.

Highlights from their portfolio

• ELICAN
  Largest project at €5.1M EC funding — built a full-scale prototype of a self-installing telescopic offshore wind substructure, coordinated by Esteyco.
• ELISA
  First project to demonstrate a self-buoyant precast concrete foundation for craneless offshore wind installation, establishing Esteyco's core technology line.
• COREWIND
  Marks Esteyco's entry into floating wind cost reduction research, covering mooring, cables, and floater design for deep-water sites.