Offshore Wind - Ternan Energy 2025

It’s a hugely exciting time for offshore wind. But significant challenges await.

Offshore wind is crucial to the renewable energy transition. As more nations take action on the environmental imperative, the opportunities for developers are huge. But there are significant obstacles too. Tomorrow’s development sites are further from shore – in parts of the ocean that pose far greater challenges both geologically and operationally.

With offshore wind, engineering mistakes are extremely costly and can quickly erode developer profit margins. That’s precisely why it’s crucial to have the support of a dedicated offshore engineering expert. With a full suite of geotechnical and geophysical services available, we can guide your project through cost-effective design and installation – towards a development with long-term economic and environmental sustainability.

Our services include:

Desktop studies, geological models and geohazard studies at concept and project stage.
Design, specification and management of offshore operations for geophysical and geotechnical site investigations.
Foundation design and installation analyses.
Trenching and burial analyses for inter-array and export cables.
Technical expert witness role in dispute resolution.

We work with the best

Client feedback

What do our clients think?

“Throughout the project Ternan has been easy to work with, responsive and helpful, and were a key deliver partner for the project. We will certainly be approaching Ternan again for future projects.”

Neil Crawford, Subsea Cables Package Manager, Ocean Winds

“Kent have worked with Ternan Energy on several projects now, where Ewan Fielding was the Geotechnical project engineer focal point. Ewan has consistently shown his ability to manage the project scope of work Ternan were required to deliver, including great responsiveness every time it was required and providing a clear and proactive communication to manage expectations and deliveries.”

Kent Group PLC

“…all four of the client representatives were excellent and I wouldn’t hesitate to recommend any of them to other projects or work with them again. All four were on board through some quite difficult situations for various different reasons during this campaign and all were handled very professionally with excellent communication onshore.”

Amelia Chilcott Site Investigation Package Manager  RWE Renewables UK

“Jess has and is doing an excellent job on the project in what has been a challenging situation. Jess is positive and pleasant to work with and builds rapport well. She clearly has excellent offshore geophysical experience.”

Lee Goulding, Director of Engineering, Thistle Wind Partners

We make a measurable difference for our clients. Here’s an example.

Take a deep dive into how our geophysical, geotechnical and ocean engineering expertise brings tangible benefits to a project.

All case studies

Delivering Expert Offshore Client Representation for Vattenfall Zeevonk

The Challenge Vattenfall's ambitious Zeevonk offshore wind farm—projected to deliver 2GW of wind power alongside a 50MWp floating solar farm—faced the complex challenge of conducting comprehensive site investigations 62km off the Dutch coast. As a joint venture...

Delivering Expert Offshore Client Representation for Vattenfall Zeevonk

The Challenge Vattenfall's ambitious Zeevonk offshore wind farm—projected to deliver 2GW of wind power alongside a 50MWp floating solar farm—faced the complex challenge of conducting comprehensive site investigations 62km off the Dutch coast. As a joint venture...