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Our Story

Since our inception 70 years ago, our vision has remained the same – improve access to sustainable energy for communities worldwide.


Our Story

Penspen is a leading global energy consultancy company. Our teams design, maintain, and optimise energy infrastructure to improve access to sustainable energy for communities worldwide. We help meet the world’s evolving energy needs by providing consulting, project, and engineering solutions across the entire energy project lifecycle. For 70 years, Penspen has served energy clients with over 15,000 projects in more than 100 countries across the Middle East, Africa, Asia, Europe, the UK, and the US.

Penspen works with a wide range of clients including many well-known international and national oil companies, utilities and infrastructure owners.  We differentiate ourselves on the technical and operational quality of service which we deliver to our clients and partners.  Also, we have no ownership ties to operators, contractors or suppliers, and therefore provide a truly independent, best practice service.

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Sidara – A Group Collaborative

Penspen is a proud member of Sidara, a global collaborative of leading specialist firms that design for people and the planet. Our 19,000 visionaries, thinkers, and innovators from over 300 offices across 60 countries offer clients a broad range of highly specialised services—from architecture and design, engineering, and project management to digital strategy, sustainability consulting, and energy innovation—all under one umbrella. 

As part of Sidara, we can help our clients respond faster to unprecedented change and increased complexity through greater collaboration across the whole portfolio of companies. As a collective, we will be able to shape even better solutions, as well as being the advocate for change that our industry and world needs. 

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Our Values

Working Safely and Responsibly

Safety is our number one priority and we are committed to the goal of zero harm. We work as a team to take care of each other and ensure everyone goes home safely. We pursue success safely and responsibly, ensuring that we operate both sustainably and ethically.

Our People

Our people are our key assets. As a team of insightful people, we are dedicated to delivering value to our clients. We treat people as individuals by rewarding their successes, supporting their aspirations and empowering them to make a difference. 

Technical Excellence

We value and cultivate our technical leadership in order to help our clients. We support each other by sharing knowledge across the business and the industry. Enabling critical knowledge to flow allows us to address our clients’ complex challenges.

Our Commitments

We deliver on our commitments to both our clients and each other. By working together as “One Penspen”, we ensure high-quality work, on time and within budget, every time. 

Commercial Success

We encourage profitable entrepreneurship and actively manage risk to drive sustainable and commercially successful growth of our business. 


Peter O'Sullivan

Chief Executive Officer

Peter joined Penspen as Chief Executive Officer in September 2013, bringing a strong track record in oil and gas engineering, project management and consultancy. Previously, he spent seven years as Chief Operating Officer at Caithness Petroleum, where he was responsible for the development of its exploration and production assets in the UK, Morocco and the USA. Prior to Caithness Petroleum, Peter spent over nine years as a consultant for clients in the energy industry working for global firms Booz & Co. and Accenture. He began his career as an oil and gas field engineer for Caterpillar (Solar Turbines).

Neale Carter

Executive Vice President, Middle East, Africa and Asia Pacific Regions

Neale joined Penspen in April 2014. He has a strong track record in oil and gas services management, sales, marketing, and operations. Neale spent three years as Head of Global Sales for Weatherford Ltd., where he was responsible for the development of sales capability and performance for all products and services in all operating geographies. Prior to Weatherford, Neale spent over five years in executive management as the CEO of Tendeka and Sensornet. He also spent another four years in sales, marketing, and operations management with Easywell, and Weatherford. He began his career as a Testing field engineer for Schlumberger and has over 32 years of experience in the energy industry.

Nigel Curson

Executive Vice President, Technical Excellence

Nigel has 30 years of oil and gas consultancy experience. In the mid-80’s he worked in production and drilling offshore in the North Sea. From the mid-80s to late 90s, he undertook various roles with Andrew Palmer and Associates, who specialise in subsea field developments, particularly in the North Sea.

Rachel Jordan-Evans

Executive Vice President, Human Resources

Rachel joined Penspen in February 2019, firstly as the Director of Human Resources for Corporate Services, before becoming Executive Vice President of Human Resources. She began her career in learning and development at Johnson Controls and progressed to Lead Talent Management for Johnson Controls Global Workplace Solutions business – firstly for EMEA and latterly globally. During this time, Rachel was responsible for the talent management of 21,000 employees across 95 countries. After a successful 17 year career with Johnson Controls, Rachel became the Director of Human Resources for a food manufacturing organisation, serving large food retailers and food service organisations such as McDonalds, ITSU, Sainsburys and Tesco. This enabled her to broaden her existing generalist HR experience and lead an organisation through the challenging planning phase in preparation for Brexit.

Spencer Wreford

Chief Financial Officer

Spencer Wreford is the CFO at Penspen, with responsibility over the Finance, Legal and IT support functions. He is an experienced finance director within international B2B service businesses and leads the financial reporting, analysis and planning, tax & treasury, corporate governance and digital delivery within the business. Before joining Penspen in 2020, Spencer spent nine years at Empresaria Group plc, an international staffing group, starting as Group Finance Director before taking the roles of Chief Operating Officer and Chief Executive Officer. Prior to this he worked in a number of senior finance roles, including at BPP Group and ITE Group plc. Spencer holds a BSc (Hons) in American Management Studies from Swansea University and is a member of the Institute of Chartered Accountants in England and Wales.

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Quality, Health, Safety and Environment (QHSE)

Penspen is a certified member of several internationally recognised organisations across the energy industry, including the British Safety Council, and holds many globally recognised QHSE certificates and accreditations.

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Code of Conduct & Ethics

Our Code of Conduct sets out the standards and legal requirements we expect from our employees, clarifying the ethics and compliance expectations for everyone who works at Penspen.

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Our Regions

Wherever you are, we are. Penspen combines global engineering experience with local project capabilities in over 100+ countries worldwide. Explore our key regions.



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Our Careers

Excellence is at the heart of everything we do and we believe the only way we can achieve this is by working with excellent people who support our values.

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