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Executive Team 

Roger Ammoun Chief Executive

Roger is the Founder and majority shareholder of RNA.  He is a highly experience technology and infrastructure investor having led the European business for GCM Grosvenor, a global Asset Management firm with $50bn Assets under Management.  Prior to that he has worked at Consensus Business Group where he led technology and infrastructure investments as well com-managing the Masdar Cleantech Fund, a joint venture with Mubadala (UAE SWF), Credit Suisse and Siemens.  He has 15 years of Board directorships and executive management experience including for South Staffordshire Water Plc, University College London Hospital, and Orbital Holdings (Concession Manager and operator of the M25 transport Network), Europlasma, Halosource, and Duratherm.


Nigel Viney Managing Director

Nigel has had 20 years experience in the renewable sector, and has been responsible for the strategic planning for six biomass plants sold in the UK in the last 3 years. He specialises in fuel supply, land and other commercial relationship issues that arise when developing projects.

Ross Viner Finance Director

Ross is a seasoned finance professional with over 14 years’ experience spanning large FTSE 100 businesses to VC backed start-ups, gaining exposure to a breadth of industries within the UK and internationally. In 2016 Ross joined Arenko building the finance function during the funding, build and operation of one of the UK’s first grid scale energy storage projects. This included developing the back and middle office functions to support trading of the asset across intra-day, day ahead and balancing mechanism markets. This created an in-depth understanding of the UK energy market and the challenges faced both commercially and operationally for assets supporting the transition to net zero. Prior to joining RNA Ross spent 18 months with 4Ways Healthcare, a teleradiology business, overseeing reporting for their recent acquisition by ECI Partners and senior debt re-financing.

Gary Bird Development Director

Gary has a long standing experience in project management and delivery.  Prior to joining RNA Energy, Gary spent 9 years at Eco2 UK Ltd where he was responsible for pulling together major aspects of large biomass developments including grid connections, planning applications and environmental permitting to demanding schedules whilst demonstrating commercial awareness.  Gary graduated from the University of Nottingham in 2006 with a BEng (Hons) in Environmental Engineering following a four year apprenticeship at Corus UK from 1997 to 2001 and has recently completed a part-time MSc in Climate Change at Birkbeck University.

Panos Papadopoulos Technical Director

Unique energy storage development and operational experience, most recently with UK Power Networks (UKPN) as a Senior Project Manager, running the development and operations for grid scale energy storage, which at the time amounted to 6 MW.  Previously Project Manager in EDF’s Research and Development centre in the UK. Led many projects including electric vehicle initiatives and the new global phenomenon 'The Internet of Things.'




Adrian Gutierrez Technical Manager

Adrian has been working in the UK energy industry since 2014 and has knowledge and experience of building electrical services, renewable energies and electrical distribution network design connections.  He is an experienced electrical engineer, starting his career in Spain before moving to the UK to join Europe’s leading solar developer, Lightsource, where he was involved in many exciting projects including the biggest floating solar plant in Europe which was installed on London's Queen Elizabeth II Reservoir in 2016.

Alex Viney Project Developer

New to the team, Alex has a passion for renewable energy and a keen interest in agriculture as her family has many years experience in the farming industry. Alex made the move from the aviation industry and now specialises in client relationships and sourcing land for solar and battery storage projects.


Stephen Nash Strategic Advisory Services

Stephen is the founder of Kuungana Advisory, a firm providing policy and regulation, commercial, and financial advisory services across the power sector.  Stephen is a Chartered Accountant, has 13 years experience in the sector, and is currently acting as commercial and strategic advisor to RNA Energy.

RNA is now recruiting!

Please contact us if you would like to be part of our team.  We are ideally looking for individuals with a strong technical background who are experienced in the development and delivery of energy projects in the UK but would welcome applications from anyone motivated to help deliver our mission.