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Originating & building a risk-managed portfolio of

high-value subsurface assets

Decarbonisation Exploration: The Future of Exploration

dCarbonX explores for subsurface assets to enable the Energy Transition. Whether it is an intermittent renewable producer requiring energy storage, a facility requiring geothermal heat, or an industrial complex seeking permanent carbon sequestration capacity, dCarbonX uses its unique technical skills and knowledge base, as well as its deep industry, financial, commercial, and academic networks to identify, co-venture and progress these dispatchable baseload assets.


Importantly, the concepts are all proven and with dCarbonX’s focus on greenfield projects, we reduce legacy liabilities from old wells, facilities, or infrastructure.


dCarbonX’s value realization model will be achieved by cost effectively building a broad portfolio, managing project maturation through cost & risk sharing, with ultimate monetization through asset sales, swaps, royalty structures, technology licensing payments and carbon trading.

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Energy Transition

dCarbonXARC’ provides practical solutions for emissions


Avoid - via geothermal resources for HVAC & power 


Reduce - via strategic & scalable integrated hydrogen storage


Capture - via permanent disposal of CO2 in saline aquifers


Decarbonisation Exploration

Decarbonisation plays are well understood


Greenfield Projects - limit legacy liabilities, wells, or pipelines

Leveraging E&P methods & applying bespoke technologies

Decarbonisation Exploration is the Future of Exploration

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GeoEnergy Themes

Evaluation of new opportunities underway

Greenfield subsurface opportunities already identified


Customer-facing partnerships & relationships key to securing premium projects

Partner needs are solved through scientific, industrial & business collaboration


Enabling the Energy Transition together

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Agile, pioneering, subsurface focus


Efficient low-cost operator & technical partner of choice

Access to energy transition capital – to share risks & rewards

Entrepreneurial - adaptive to multiple value realisation paths

Our uniquely experienced team

Dr John O'Sullivan (left)

Tony O'Reilly (centre)

Dr Angus McCoss (right)


Dr. John O’Sullivan (left) is a Founder of dCarbonX. John holds three degrees in Geology and Geophysics as well as a Masters Degree in Technology Management. John is also professionally chartered by the Geological Society of London and a member of the International Geothermal Association. He has more than 30 years of experience in the energy arena having previously worked with Mobil, Marathon, Marine Institute and Providence Resources plc where he served as the Technical Director from 2010-2019. He has worked across both the hydrocarbon and renewable sectors in oil/gas, offshore wind/wave, geothermal, gas storage and carbon capture/sequestration. John has chaired and participated in a number of Irish government-funded SME/start-up RTDI high technology enterprise investment programmes and was Ireland's national offshore renewable energy representative at the International Energy Agency.

Tony O’Reilly (centre) is a Founder of dCarbonX.  A graduate of Brown University, Tony has 30 years C-suite experience ranging from large, multi-site international businesses to start-ups in industries ranging from oil and gas exploration to mining, to consumer media and luxury goods, to environmental technology and financial services.  As founder and CEO of Providence Resources Plc, Tony led the Company into major commercial transactions with leading energy players including ExxonMobil, Eni, Petronas, Total, Chevron and Chrysaor.  Prior to Providence, Tony was the CEO of Wedgwood and prior to that was Chairman and CEO of ARCON.  Tony was also co-founder of two start-ups, Zenergy and Lockwood, which were respectively involved in high temperature superconductivity (HTS) technology and funds management.

Dr. Angus McCoss (right) is a Founder of dCarbonX. He has two degrees in Earth Sciences, including a BP sponsored PhD from Queen’s University Belfast. Angus pursued a 20-year international career in Shell, gaining considerable oil & gas business experience in Europe, China, the Middle East, North and South America, and Africa. Roles at Shell ranged from R&D leader, to business developer and regional vice president of exploration. He joined the board of Tullow Oil plc in 2006 as Exploration Director where he led an industry-acclaimed team that innovatively discovered several new oil basins in Africa and South America. Angus also had a role on the advisory board of the Energy Geoscience Institute, University of Utah, and served as a non-executive director of the privately funded technology trailblazer Ikon Science Ltd and senior independent director at Providence Resources Plc. He has recently founded the Sustainable Earth Scientist international collaboration platform for students to constructively explore solutions to climate change.


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