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Our talented team constantly innovate to ensure we maintain our position as market leaders.

Gareth Craig

Gareth is Green Frog Power’s independent non-executive Chairman. Prior to joining the group he was a private equity investor for over 20 years who specialised in infrastructure businesses and projects, including the energy and renewables markets.


Andrew Stone

Chief Executive Officer of Green Frog Power, Andrew has over 30 years’ experience in power generation, including senior roles such as Director, Global Power Generation project development and delivery for Cummins Inc. Prior to Cummins, he worked for Shell and Unilever in a variety of roles including engineering, project management and sales and marketing. Andrew has been a board member of several joint venture companies, including a number of IPPs, and has a broad knowledge of industrial operations and continuous improvement. With considerable experience in business operations, particularly in power generation markets, Andrew has proven capability in strategic planning and organisational development.


Neil Beaumont

Neil is Finance Director of Green Frog Power. He is a Chartered Accountant with particular interest in tax and treasury matters. He joined Green Frog in 2011 to bring project development and cost control experience to our 214MW STOR project, rising to become a Director of the group. Before joining Green Frog, Neil spent most of his professional life in property development having worked at Beazer, Hanson, Liberty Property and St Modwens. He has a law degree from the University of Manchester.


Harry Townshend

Appointed in 2016 as Commercial Director of Green Frog Power, Harry joined us from Aggreko where he worked across a number of roles and geographies. Whilst living in Singapore, Harry sold multi-MW temporary power projects to utility and industrial customers across Asia. Whilst living in Dubai, he was an engineer carrying out operational improvements to gas power. Most recently, in London, he led a complex global business transformation and restructuring project. Harry obtained professional certification as a Lean Six Sigma Black Belt. Prior to joining the power industry, he worked in financial services for Citigroup and also for a VC-backed technology business. Harry studied engineering at Oxford University.


David Bates

Green Frog’s Chief Financial Officer, David joined in 2016 to help guide the finance department through the business’s rapid growth. With considerable experience in financial control, processes and reporting, David is a Chartered Accountant, having qualified with KPMG. He previously worked within Tesco Group, initially leading the financial accounting, tax and treasury functions for a £1bn subsidiary of Tesco, before managing its commercial finance function. David has a degree in French from the University of Bristol.


Neil Filkin

Neil is our Operations Director, having joined Green Frog from the renewable power generator Infinis, where he was responsible for the operational excellence programme. He has almost 20 years’ experience across power generation, engineering and manufacturing sectors, with the common theme of delivering improvement and change into operational environments. With particular experience of operating a large fleet of gas engines on landfill gas on numerous sites across the UK, Neil has a PhD from Cambridge University and is a Fellow of the Royal Society of Chemistry.


Alexander Buckley

Alex joined us in 2015 as a Director of Green Frog Power Trading, responsible for developing a trading business with the capability to deliver a route to market for Green Frog’s generation portfolio together with an asset optimisation service. Alex has worked for 25 years in the energy industry with National Power, Innogy, and RWE Supply and Trading, where he has developed extensive commercial experience in the power and gas sector. This has included management of ancillary service and connection and use-of-system contracts with National Grid, asset optimisation of power and gas assets as a senior trader under both the Pool and NETA market arrangements, setting up a gas supply business in Ireland, and trading and asset risk management roles at both a trading desk and corporate level.


Mark Symes

Mark joined Green Frog Power in 2011 and is now a Director of Green Frog Power Trading, responsible for origination, product development and third-party relationships. Mark has worked in the electricity industry for 20 years, initially at Yorkshire Electricity and then for 10 years at GDF Suez, in a wide range of roles including systems development, sales, research and regulation. He has always had a focus on the commercialisation of the benefits of flexibility, from both the demand side and from responsive generation.


Anna Andrianova

Anna joined Green Frog Power Trading in 2015, as Head of Trading, and is now a Director. She is responsible for overseeing all aspects of daily trading activities as well as developing and integrating new strategies and businesses into the framework of Green Frog Power Trading. She is now also a leader in the design, implementation and testing of trading systems, defining the risk and reporting policies and processes of the trading business. Anna worked for a few years as a structure/quant in gas, oil and solid fuels markets and later on as an exotic options and futures trader in global coal and dry freight markets for RWE Supply and Trading, before setting up a hedge fund in Mayfair. Anna has a PhD in Non-Linear Time Series Analysis from London School of Economics and an MSc in Mathematics and Finance from Imperial College.


James Hall-Smith

James is non-executive director, representing InfraRed Capital Partners, the majority investor in Green Frog Power. He heads up the environmental infrastructure business at InfraRed and has over 15 years' experience in transacting and managing investment companies within the infrastructure sector, including the energy, environmental infrastructure, social and water industries.


Giulio Bellizia

Giulio Bellizia is non-executive director, representing InfraRed Capital Partners, the majority investor in Green Frog Power. Giulio started out in the oil and gas industry but more recently worked in the investment banking division of Maquarie before joining InfraRed in 2010. Giulio’s focus is energy related infrastructure investments.


Latest News

£100million raised to build new power stations

8th May 2018

Funding secured by Green Frog Power – from Lloyds Bank Commercial Banking, HSBC and NIBC Bank – will finance 11 new gas-fuelled sites to be built across the UK, from Plymouth to Newcastle. Once online, the power stations will help ensure the UK’s energy resilience, allowing renewable sources to contribute more power to the grid.


Zero injuries onsite in over 20,000 hours worked

6th February 2018

Our latest 20MW embedded gas plant, at Cattedown Business Park in Plymouth, was completed ahead of time, with zero injuries.

Working closely with Green Frog Connect, the project was completed to tight timescales after winning a capacity market obligation in National Grid’s Early Auction on 3rd February 2017, for delivery by October 2017. Located on a challenging site, the plant occupies a site previously utilised as a tip for building material and a quarry. Despite the tight timescales, the site was generating and available for export from mid-September, and is now available to respond to Capacity Market Warnings issued by National Grid.