Our People

At Zestec, we are a close-knit, diverse family of experts with a shared passion for caring for our planet. We work seamlessly together to bring you exceptional service and honest advice on how your business can join us in driving net zero.

Yvonna Balysz

Head of Legal

Yvonna Balysz

As our Head of Legal, Yvonna supports the Zestec Team with all legal stages in developing, installing and managing its solar projects, from initial heads of terms, contract negotiations and installation, to asset management. Yvonna is passionate about making a real difference in the fight against the climate emergency and has gained renewables experience in solar, biomass, EV charging and batteries.

Dora Bartos

Finance Assistant

Dora Bartos

Dora is an integral part of our finance team and supports the business in different stages of the financial cycle. Dora loves an investigation so her analytical skills are perfect for keeping financial records in order and assisting with our financial processes.

Cameron Beauclerk

Senior Asset Manager

Cameron Beauclerk

As a Senior Asset Manager, Cameron takes care of a variety of our operational new-build and legacy rooftop solar projects. Before that, after 4 years in commercial property, he worked for 3 years managing utility scale solar projects on behalf of community energy organisations around the UK.

Simon Booth

CEO

Simon Booth

Simon is our co-founder and CEO of Zestec. He has been delivering an integrated range of funded renewable energy projects for commercial and industrial clients since 2010 and in his current role, he leads a multi-disciplinary, highly talented, dedicated team of renewable energy professionals.

Sophie Breakell

Business Development Manager

Sophie Breakell

In Sophie’s own words; ‘I was lucky enough to find Zestec early on in my career’ which was also fortunate for us. Sophie speaks with businesses looking to reduce their electricity bills and carbon output via a PPA. With a degree in Natural Sciences, she lives and breathes all things solar.

Marianne Chapman

Client Engagement Executive

Marianne Chapman

Marianne is our client engagement executive here at Zestec, specialising in hunting for new projects, partners, and opportunities to generate as much renewable energy as possible for the UK.

Neil Clayton

Co-Head of Project Delivery

Neil Clayton

Neil is our Co-Head of Project Delivery. With John, he leads our Project Management team and key accounts to ensure everything from designs, contracts, construction and management of a project runs smoothly for our clients.

Jessica Doble

Client Engagement Executive

Jessica Doble

Jessica is our client engagement executive here at Zestec, specialising in hunting for new projects, partners, and opportunities to generate as much renewable energy as possible for the UK.

Kate Erminasa

Head of Finance

Kate Erminasa

Kate oversees our financial planning and HR functions, ensuring our organisational goals align with nurturing a vibrant and productive work environment. To do this Kate has to seamlessly blend both HR and financial strategies to achieve organisational success.

Louise Farah

Project Administrator

Louise Farah

Louise manages the development of projects from the feasibility and development phases, through contract negotiations and installation, to commissioning and handover to asset management.

Elizabeth Gibbons

Project Manager

Elizabeth Gibbons

Elizabeth manages the development of projects from feasibility and development phases, through contract negotiations and installation, to commissioning and handover to asset management. Communication is key to Elizabeth’s role, working with the end users and installation partners to deliver the projects on time and within budget.

Martin Harris

Contracts Manager

Martin Harris

Martin is a Contract Manager at Zestec Asset Management, bringing a wealth of engineering, contractual, and commercial experience to the team. He plays a pivotal role working in partnership with our project delivery teams through the late stages of construction, handover, and defect liability periods—ensuring smooth transition of high-quality assets into our expansive Asset Management portfolios.

Ben Hughes

Project Manager

Ben Hughes

Ben manages the development of projects from the feasibility and development phases, through contract negotiations and installation, to commissioning and handover to asset management.

Russ Kelsall

Project Manager

Russ Kelsall

Russ manages the development of projects from feasibility and development phases, through contract negotiations and installation, to commissioning and handover to asset management.

Sara Kershaw

Asset Manager

Sara Kershaw

As one of our Asset Managers, Sara plays a key role in ensuring our renewable projects continue to run smoothly and efficiently for the longevity of the contract. Sara will identify any underperforming projects and ensure that our O&M partner is on hand to get the problems fixed.

Liberty Kinlin-Martin

Solar Design Engineer

Liberty Kinlin-Martin

Liberty is our Solar PV Design Engineer. From the beginning of a renewables project, she runs the initial yield calculations to design the systems to suit the client’s needs, as well as working with James on the financial modelling, analysis of performance and technical reviews.

Tomasz Knutel

Solar Design Engineer

Tomasz Knutel

Tomasz is one of our Solar Design Engineers, with a passion for innovation, leveraging data and technology to move green energy projects forward, specialising in the details needed to overcome challenges for a sustainable future.

Yash Kulkarni

Head of Energy Transition

Yash Kulkarni

Yash is exploring opportunities to develop our proposition for energy transition technologies for Commercial and Industrial clients in the UK. Currently leading all the stages of a product solution’s development for funded Battery Energy Storage Systems from inception to proposition, to operation, to evaluation and improvement.

Felix Ma

Asset Manager

Felix Ma

Felix is our Junior Asset Manager at Zestec Asset Management. He has an engineering background and a passion for building a low-carbon future. Felix plays a key role in optimising asset performance across our portfolio.

James Mackinnon

Head of Technical Development

James Mackinnon

James runs our team that supports the delivery of projects from sales to installation and operation. As well as financial modelling, analysis of performance, and technical reviews, he also stays involved with training new team members.

Priyat Madhur

Senior Asset Manager

Priyat Madhur

Priyat is part of the asset management and finance team where she monitors and analyses asset and portfolio performance and identifies where improvement could be made to maximise portfolio revenue.

Craig Miles

Management Accountant

Craig Miles

As Zestec’s Management Accountant Craig is primarily responsible for analysing and reporting the financial performance of our projects. His day-to-day role also encompasses budget renewal and monitoring, as well as providing support for annual financial account audits, among other responsibilities

Jamie Morrison

Head of Business Development

Jamie Morrison

Jamie brings a wealth of expertise to Zestec Asset Management as Head of Business Development. With extensive experience in the solar C&I industry, Jamie leads our Client Engagement and Business Development teams, driving strategic initiatives and fostering mutually rewarding partnerships that propel our growth and innovation in the renewable energy sector.

Asher Prout

Senior Project Manager

Asher Prout

Ash is a dedicated solar Senior Project Manager, holding a Master’s degree in Mechanical Engineering, Ash brings a robust technical background to the table, coupled with a passion for sustainable solutions.

Rohith Shaji

Project Manager

Rohith Shaji

Rohith manages the development of projects from the feasibility and development phases, through contract negotiations and installation, to commissioning and handover to asset management.

Rudi Small

Business Development Manager

Rudi Small

Rudi speaks with businesses looking to reduce their electricity bills and carbon output via a PPA.

Toby Smith

COO

Toby Smith

Toby is our co-founder and COO who leads the delivery function at Zestec where he has designed and implemented the delivery systems and processes that have placed the business at the very top of the C&I funded solar PV market. Through the partnership with Octopus Toby has grown and developed the delivery team that is now successfully delivering for a diverse range of clients such as Amazon, major UK airports, and large multi-site programmes for major UK supermarket chains.

John Toms

Co-Head of Project Delivery

John Toms

As the Co-Head of Project Delivery, John is responsible for overseeing project delivery, stakeholder collaboration, and operations to create the strategic direction within the business.

Samantha Whittle

Executive Administrator

Samantha Whittle

As Zestec’s Executive Administrator, Sam offers high-level support to the Leadership Team and Project Delivery Team, facilitating the growth of fully funded renewable solutions for our clients. With over 20 years of experience in business support and administration, Sam is keeping us in check with her dedication to enhancing organisational efficiency and productivity.

Steve Wilson

Health and Safety Executive

Steve Wilson

Steve is our Health and Safety Executive here at Zestec.