Headshot

Sean Gammons

Managing Director

Contact

London
Tel: +44 20 7659 8564
Fax: +44 20 7659 8565

Berlin
Tel: +49 30 700 1506 01

Email: sean.gammons@nera.com
vCard: Download

Education

MSc in economics, University College, London
Diplôme d’Ingénieur, Ecole nationale supérieure du pétrole et des moteurs (ENSPM), Paris
BA (Hons.), Oxford University

Experience

Mr. Gammons is the head of NERA’s London Energy Practice and specializes in the gas and power sectors. He has more than 20 years of experience advising energy companies and regulators on the design and operation of gas and electricity markets. His experience includes regulatory work on market rules, tariff design, and antitrust enforcement (such as merger approval and state aid), as well as commercial work on contract design, pricing, investment appraisal, and risk management. Mr. Gammons has led a large number of due diligence and valuation exercises in support of M&A transactions, greenfield investment, and financings in the UK, Europe, Middle East, North Africa, and Asia, covering deregulated, regulated, and hybrid (low-carbon) segments of the energy industry. Examples of his advisory assignments include:

  • Advising a European gas incumbent on reform of its gas tariffs to meet various constraints (cost recovery, competition, and antitrust undertakings);
  • Advising RWE Npower and the Competition and Markets Authority on the reform of electricity transmission charges in the UK; and
  • Advising a European gas pipeline company on the development of a backhaul tariff based on market principles.

Mr. Gammons is also an experienced expert witness who has provided expert testimony in cases covering contractual disputes (construction, sale and purchase, M&A, and broker disputes, among others), antitrust matters, and energy industry regulation in a wide range of jurisdictions around the world, including the International Centre for Settlement of Investment Disputes (ICSID), the International Chamber of Commerce, and the English High Court. Examples of his expert work include:

  • Damages estimation for non-delivery of gas and/or electricity under long-term contracts, and related expropriation claims;
  • Economic analysis in relation to price re-opener and loyalty clauses in long-term contracts for gas, gas storage, and gas transport, including change of circumstances, market definition, and price re-sets;
  • Market definition and abuse of dominance review in relation to long-term contracts for gas storage and gas transport;
  • Liquefied natural gas (LNG) terminal and gas pipeline construction contract disputes; and
  • Assessing indemnification losses in relation to an SPA for the sale of a portfolio of wind farms.

Languages

French

Title Type Author
An Honest Broker: Are Non-Domestic Energy Customers Getting a Fair Deal? White Paper By Sean Gammons, George Anstey, and Stephen Buryk
Decarbonising Interconnected Power Markets: Should Germany Join France in Implementin... White Paper By Sean Gammons, Daniel Radov, and Dominik Hübler
Getting Ready for Competition in Japan: Lessons Learned from Abroad Published Article By Sean Gammons, Dr. Glenn R. George, Robert Southern, and Willis Geffert
Modelling the Impact of Zonal Transmission Loss Multipliers Report Sean Gammons and Richard Druce
Paying Peanuts: Will the British Capacity Market Deliver Security of Supply? Report By Sean Gammons and George Anstey
The UK Energy Market Investigation: A Desperate Search for Evidence of a Lack of Comp... Published Article By Dr. Frank P. Maier-Rigaud, Sean Gammons, and George Anstey
Tantalus and Other Myths of the British Energy Market Brief By Sean Gammons, Prof. Dr. Frank Maier-Rigaud, and George Anstey
Review of the Impact of the Carbon Price Floor on the GB Electricity Market Study By Sean Gammons, Daniel Radov, Vakhtang Kvekvetsia, et al.
NERA Reports for RWE npower Related to Project TransmiT Report By Sean Gammons and Richard Druce in collaboration with a team from Imperial College London
Project TransmiT: Modelling the Impact of 'Improved ICRP' Report By Sean Gammons and Richard Druce with Imperial College London