Advisory - Ternan Energy 2025

The development potential of a new site is always exciting. But the offshore sector is growing fast. New sites are often in deeper water, posing greater geological and operational challenges. Achieving profitable outcomes begins with asking the right questions about your site, right from the outset.

We have the expertise not only to assess site feasibility, but to supervise and manage all stages of a site survey and ground investigation – making sure you gather the data you need, without paying to capture data that you don’t.

Perhaps you want to understand if a lease area is worth bidding on. Or maybe you want to identify the most cost-efficient locations to place foundations. We give you total clarity on the risks and the opportunities. So you can make confident commercial decisions.

How we help

Our services include:

Desktop studies and open-source data collation
Preliminary conceptual ground models
Geophysical survey/SI specification and scoping
Contractor tender review and selection support
Final engineering and construction ground models

Clear, intelligent decisions

Gather accurate data about the risks and opportunities associated with your site.

Maximising intel, minimising spend

Get the information you need, without overspending on unnecessary surveys.

A full suite of survey expertise

Extensive in-house expertise – from site feasibility through to integrated ground modelling.

Agile response

You have deadlines. Our agile team can respond fast.

Survey & SI Design

The cost of site investigations can run into millions of pounds. We help you plan surveys in a way that prevents costs from spiralling, while making sure you gather the data you need to make informed design, development and commercial decisions.

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Accurate insight

Get the project spec and scope of investigations right first time. Quickly understand the risks and viability of development.

Cost management

Gathering the right data doesn’t mean conducting every survey imaginable, across every square inch of your site. We make sure you capture the data that matters. No more, no less.

Site Investigation

We have in-house geophysical, geotechnical and geomorphological expertise. That means you can come to us to reveal the true characteristics of your site – mapping the seabed, identifying what it’s comprised of and discovering the risks.

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Outcome orientated

Every project is different. Our investigations are always conducted to align with your developmental ambitions.

Commercially focused

We keep a keen eye on the bigger commercial picture – whether that’s identifying red flags as early as possible or making sure there are no surprises when it comes to construction.

Ground Modelling

It’s impossible to overstate the importance of an accurate ground model. This visualisation of the data gathered on your site informs everything from the design and installation of your project right through to its eventual decommissioning. When data accuracy is essential, it pays to work with an expert.

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Clear insight

Visualise key data including structural geology, geomorphology, sedimentology, stratigraphy, geotechnical properties, geohazards and more.

Streamline your future

An accurate ground model helps to prevent mission-critical challenges when it comes to the design and installation phases of your project.

Unbridled honesty, unbiased advice. Just the way it should be.

When you choose Ternan Energy, you choose a partner that’s 100% independent. There’s no recommending needless additional work to please external shareholders. And no referring you to partner or parent companies. Our only focus is doing what’s right by you, your project and your commercial interests. That’s a promise.

Integrity: We promise unbiased honesty that is rooted in our clients’ best interests.
Independence: We are completely independent and 100% employee owned.
Innovation: We develop creative answers to complex engineering challenges – helping clients to maintain profitability in a sector where margins can be tight.

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...

The more you work with us,
the more you derisk your project.

The lifecycle of any offshore development is intricately connected. Each phase – and its success – is contingent on the phases that came before. It’s why working with an independent expert can generate huge savings. When each part of the process is conducted meticulously, without losing sight of the bigger picture, the impact on costs can be transformative. Let us help.

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Desktop study and open-source data collation

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Gap analysis

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You are here in the project timeline

You can come to us for expert support with each phase of your project. The more you work with us, the more you derisk your project.

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Client representation and survey management

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Onshore laboratory and reporting support

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Geophysical data interpretation

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Foundation design

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Cable burial risk assessment

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Subsea cable management

FAQs

Do you have the expertise for the job?

We are a multi-disciplinary team of offshore geophysical, geotechnical and ocean engineering experts. It’s unique to have our blend of skills under one roof. And it means we can provide a vast suite of support for offshore development projects. Our knowledge has been implemented on developments across the globe.

Why choose Ternan Energy?

Developers. Contractors. Engineers. They come to us for unbiased honesty. Our sole focus is helping you make sensible strategic decisions for your project – whether that’s working towards a cost-effective construction phase or walking away from a risky site.

Is it cost effective to work with an expert?

Offshore development requires significant capital investment. Commercial sensitivity is crucial to make sure your project recoups the investment and operates profitably. That’s precisely why you should work with an expert who has the comprehensive engineering expertise and project experience to maintain commercial focus.

The more you involve us in your project, the more we can derisk it and prevent costly mistakes. And one more thing. Because we’re 100% independent, there’s no referring you to partner or parent companies for additional work that isn’t necessary. That’s a promise.

Can you get the job done on time?

You have deadlines to work to. As an independent expert, we can stay nimble and responsive to incoming projects.

What do your advisory services encompass?

Our advisory services include desktop studies and open-source data collation, preliminary conceptual ground models, geophysical survey/SI specification and scoping, contractor tender review and selection support, final engineering and construction ground models and maintenance surveys. And that’s just the start. Take a look at our full suite of services to see how we can support your development throughout the project lifecycle.

The more you involve us in your project, the more we can derisk it and prevent costly mistakes. And one more thing. Because we’re 100% independent, there’s no referring you to partner or parent companies for additional work that isn’t necessary. That’s a promise.