At the forefront of offshore engineering

SLPE are specialists in advanced engineering of offshore foundation structures for renewable energy infrastructure. We apply cutting-edge expertise to design high-performance monopiles, jackets, and related structures enabling the world’s most complex renewables projects to transition from concept to reality.

Comprehensive expertise

SLPE provides comprehensive design engineering across every stage of the offshore structural life cycle. From initial site appraisal to asset life extension, our multi-disciplinary expertise ensures engineering excellence and commercial optimisation.

  • Strategic Feasibility & Concept Selection
  • Front-End Engineering Design (FEED)
  • Detailed Design Engineering
  • Fabrication and Installation Support
  • Asset Integrity and Life Extension

Whilst we work primarily in Wind Turbine Generator Foundations and Offshore Substation Structures, we also develop solutions for novel technologies such as:

  • Green hydrogen offshore substructures
  • Slip joint, C1 and other innovative structural connections
  • Tripod and gravity-based substructures

Wind Turbine Generator (WTG) Substructures

We enable offshore wind development in increasingly challenging conditions, by designing structures to accommodate next-generation turbines, deeper waters and complex ground conditions.

From concept feasibility studies to detailed design, we support you in developing the optimal structural concept for site-and turbine-specific requirements.

  • Primary steel and geotechnical design

    We deliver advanced design for the full spectrum of offshore wind foundation concepts. Drawing on our deep geotechnical and structural expertise, we engineer optimised solutions for the world’s most challenging environments.

    • Monopiles and transition pieces
    • Jackets and piles
    • Novel and next-generation concepts
    • Primary structural connections
  • Secondary and tertiary structures

    Our multi-disciplinary team delivers fully integrated design for critical secondary and tertiary components. We focus on engineering low-maintenance, high-reliability systems specifically designed to minimise offshore intervention and reduce operational risk.

    • External work platforms
    • Internal platforms and internal platform cages
    • Boat landings and access systems
    • Corrosion protection systems
    • Low-voltage electrical design
  • Advanced Computational Design

    We achieve industry-leading weight reductions and fabrication-ready designs by integrating advanced geotechnical 3D FEA with MonoPoly, our proprietary monopile optimisation software.

    We combine our in-house technologies with the power of industry leading software such as Bladed for wind turbine analyses and ANSYS for advanced Finite Element Analysis. This enables us to model  conditions and soil-structure interactions to a level of precision that maximises steel efficiency.

Offshore Substation (OSS) Substructures

We design Offshore Substation (OSS) substructures that are safe, efficient and optimised for fabrication and installation.

From early concept and feasibility through to detailed design, we develop tailored substructure solutions suited to site conditions, fabrication preferences and installation methods, ensuring reliable performance and buildability in even the most challenging offshore environments.

  • Primary steel and foundations

    Offshore substations have become a speciality of ours, with a portfolio of more than a dozen fabricated OSS substructures across a range of concepts.

    • Jackets – pre-piled
    • Jackets – post-piled
    • Jackets – suction caissons
    • Monopiles
  • Special and primary components

    We detail-design these critical components for ease of fabrication and installation.

    • Lift points
    • J-tubes and j-tube cages
    • Grouted connections
    • Pile sleeves
    • Mudmats
  • Secondary and tertiary structures

    Developed with fabricator insight, our in-house software cuts material use and weld volume while delivering robust secondary and tertiary components such as:

    • Cable decks
    • Platforms and walkways
    • Boat landing systems
    • Access and egress systems
    • Corrosion protection systems