Our people


David Sheppard

Head of projects and planning

David is responsible for overseeing projects from concept to obtaining planning permissions, through to making the project ready for construction.

David has a decade of experience in gaining planning consents and developing power generation projects across England and Wales. He has been at Green Frog Power for over 10 years, where he has gained planning consent for 1GW of generation and has developed 540MW of fast-starting generation.

Jessica Rose

Jessica Rose, our Head of Design, is responsible for the creative vision of Green Frog Power. Since joining our team in 2020 she’s been overseeing all aspects of our design and creative output.

A fully qualified journalist, Jessica had previously worked in media in the UK and abroad after graduating from Liverpool John Moores University. 

She moved into the power sector two years ago, joining Genovate Power Solutions as their Marketing Manager.

Charlotte Fletcher

Charlotte Fletcher is head of finance of the Green Frog group and involves herself in all aspects of the business. She oversees our financial planning, cashflow forecasting, budgeting and costing, as well as undertaking our project-management accounting. She oversees our human-resources function, including our hiring of new staff. She handles our reporting to the board of directors and to our shareholders.

Charlotte is responsible for structuring the accounting and the project management of our subsidiaries, leading them to greater efficiency and profitability.

James Bourne

James Bourne is chief executive of Green Frog Industries, managing a portfolio of 60MW of fast-starting plant under a contract to National Grid to provide energy when the markets are short.

He joined the Green Frog group in 2016 as head of health and safety and soon took over all operational running of our sites. He also leads new construction projects. A chartered safety professional with more than ten years’ experience in hazardous environments, James worked in the oil industry for more than ten years in several operational health and safety roles before he joined us.


Sidra Qayum 

Sidra Qayum is a development manager in our property team. She sees through the early development phases and feasibility works of our power projects, which are predominantly battery storage, by identifying suitable sites and securing land rights and grid connections.

Sidra holds a RICS accredited degree in Real Estate and has worked for several years in property and infrastructure. She recently managed land acquisitions for the forthcoming HS2 railway line which included negotiating with landowners along the route, prior to which she worked for one of our competitors, securing numerous power generation sites..


Richard Park

A Chartered Surveyor, Richard joined Green Frog Power in 2016 from the estates team at Wales & West Utilities and has over 15 years’ experience in the energy sector.

At Green Frog Power he has managed a development pipeline exceeding 1GW of sites and has been involved in the construction of more 250MW of plant.

Richard manages all aspects of the property portfolio from acquisition to development or sale. He also leads on several new-energy projects.

Jeremy Taylor

Jeremy entered the power sector with Mark Jones ten years ago. Starting with a green biomass power station in Northern England they negotiated a contract to build and operate 220MW of power stations for National Grid PLC. Green Frog Power Ltd is now the largest long-term provider of contracted balancing services to National Grid.

Jeremy handles our interface with political, regulatory and industrial associations. He has worked closely with BEIS and National Grid on the Electricity Market Reform, advising on policy and its implementation.

He has successfully led the raising of more than £300million of debt and equity for power projects.

Mark Jones

A Chartered Civil Engineer, Mark manages every aspect of the design of our power stations, organising our structural engineers, civil engineers and plant manufacturers. He details the budgets for plant construction and ensures that they are kept to. He personally project-manages the construction of our power stations and substations, with the result that they are built within time and under budget.

Earlier in his career he was a Senior Tournament Director with the Professional Golfers, Association responsible for staging multiple Ryder Cup matches.