Expert Witnesses
Energy, Oil & Gas
Instruct an Expert
01
Energy, Oil & Gas · Arbitration
Energy, oil & gas expert witnesses for arbitration.
Independent testifying and advisory experts across the full energy value chain — upstream and offshore, LNG and gas markets, power generation, process and the energy transition.
✓ Ranked in the GAR 100 Expert Witness List (2025)
✓ Expert testimony delivered in 200+ arbitrations
✓ 19 named experts in energy, oil & gas
#10
Ranked in the GAR 100 Expert Witness List
Global Arbitration Review · Construction Arbitrations, 2025
Global Arbitration Review · Construction Arbitrations, 2025
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GAR
Recognised by Global Arbitration Review
#10
GAR 100 Expert Witness List, Construction Arbitrations (2025)
200+
Arbitrations — expert testimony delivered
600+
Experts firm-wide, 12 global offices
50+
Countries served worldwide
Appointed under the rules of ICC · LCIA · SIAC · DIAC · ADGM · HKIAC — expert testimony delivered in 200+ international arbitrations.
The Bench
Meet the experts who will testify on your matter.
From reservoir to grid, Masin fields experts on the engineering, operations and economics of energy disputes. Every expert is named, independent, and instructed directly — view their full profile and testifying experience.
01
Oil & Gas
5 experts
02
Gas, LNG & Markets
2 experts
03
Power Generation & Thermal
4 expertsArthur Carlisle
Power generation & industrial
View profile & experience →
James W. Malloy
Boiler & power plant
View profile & experience →
Joseph J. Jaskulski
Power generation & energy infrastructure
View profile & experience →
Michael Bellstedt
Refrigeration & thermal engineering
View profile & experience →
04
Process & Decarbonisation
3 experts
05
Renewables & Sustainability
3 experts
06
Industrial Gases
2 experts
+2further energy and process analysts supporting the senior team on modelling, valuation and technical review.
Disputes we prove
01Upstream & offshore development
02EPC & turnkey plant claims
03LNG sale & purchase / price review
04Power purchase agreements
05Gas supply & transportation
06Refinery & process plant
07Decommissioning & abandonment
08Renewables & energy transition
Why counsel instruct Masin
Independent opinion that holds under cross-examination.
01
A bench, not a business card
A named senior expert leads, supported by sub-specialists and analysts — so no issue in the reference is left uncovered.
02
Tested before the institutions
Our experts have reported and testified under the rules of DIAC, SIAC, LCIA, ICC and the ADGM across the highest-value disputes.
03
Report-ready to the standard
Opinions are drafted to IBA, CIArb and Part 35 requirements — clear, reasoned and defensible from first draft.
Reports & testimony to
✓IBA Rules on the Taking of Evidence
✓CIArb Expert Witness Protocol
✓CPR Part 35 & Practice Direction
✓The Ikarian Reefer duties to the tribunal
Deliverables
Independent expert reportsJoint statements & experts' meetingsOral testimony & cross-examinationExpert determinationEarly case assessmentRebuttal & supplementary reports