Fleissen & Company is an energy infrastructure advisory and technical services firm specialising in hydrocarbon measurement, emissions management, and system performance.
Our work supports operators, regulators, and investors in addressing complex challenges across the energy value chain — from wellhead to terminal, from field measurement to regulatory filing.
Incorporated in Nigeria in 2016 (RC1352641), Fleissen traces its origins to England, UK, where the practice was first established in 2014. We have since built a practice grounded in Nigerian and international energy operations, advising clients that include the World Bank, International Oil Companies, national operators, and Nigeria’s petroleum sector regulators.
A disciplined method for problems with commercial and regulatory consequences.
We begin by establishing the integrity of measurement, emissions, and operational data. Decisions made on unvalidated data compound error. We ensure the foundation is sound before any analysis or recommendation is built on it.
2. Diagnose the Root Cause
We identify the underlying technical and systemic issues, not just surface symptoms. Superficial diagnosis produces superficial solutions. Our engineers work at the level where the problem actually originates.
3. Design Practical Solutions
We develop solutions that are technically sound, operationally implementable, and commercially viable. A solution that cannot be executed in the real operating environment is not a solution, it is a report.
We work with clients through execution to ensure that recommendations are applied correctly and that measurable outcomes are achieved. Our engagement does not end at the point of delivery.
Our work is judged by whether it resolves real operational and commercial problems and withstands regulatory scrutiny.
Fleissen publishes Energy Summaries, a monthly intelligence report tracking developments across Nigeria’s energy sector, covering oil and gas markets, power sector dynamics, policy direction, regulatory changes, infrastructure developments, and investment signals.
This continuous sector visibility ensures that our advisory is informed not only by technical data but by the commercial and regulatory context in which our clients operate.
Fleissen delivers specialist technical training and professional development programmes for the energy sector. Our programmes are designed and facilitated by practitioners with direct field and regulatory experience.
Fleissen is developing management and professional development programmes for energy sector professionals, including leadership, commercial skills, project management, and communication. These will be announced shortly.
To uniquely integrate engineering and management expertise in solving infrastructure assets challenges in the energy and diverse industries.
To become a leading Nigerian infrastructure assets advisor that provides unique blend of equipment merchandise, engineering and management consultancy services
We combine engineering expertise, research-driven insights, and dependable delivery to help clients solve complex challenges in energy, oil & gas, and infrastructure.
