Our Leadership Team

Jay Zoellner


Jay has over 30 years experience successfully growing and managing energy businesses in the US, and joined KiWi Power from Edison Energy, where as CEO he transitioned the business from multiple, independently operating companies into a leading and growing provider of integrated energy solutions to large-scale industrial and commercial market leaders. Jay has considerable experience scaling and maturing businesses, having developed and commercialised one of the first real-time software-as-a-service energy platforms for commercial and industrial enterprises.

Yuval Tamir

UK General Manager

Yuval has joined KiWi in the beginning of 2017, after a successful and intense 34 year career as a civil servant. Yuval served for 9 years in the military as a helicopter pilot, was a deputy squadron leader, followed by 25 years in the PM’s office, where he has assumed command and senior management positions, leading multiple teams and units, through complex, multidisciplinary projects.

Yuval studied law at the Haifa University and the IDC and is a member of the bar association since 1999.

Stephan Marty

General Manager Energy Storage & International Demand Response

Stephan has over 15-years of experience in the energy sector, with in-depth understanding of demand response, battery energy storage, distributed generation, conventional generation, smart grid and renewables.
He has had different roles such as Sales, Business Development, Project Management, Business Management, Strategy and Project Development at large multinational companies (e.g. General Electric, Holcim) as well as start-ups (e.g. Solar Reserve).

Stephan holds an MSc in Mechanical Engineering from Swiss Federal Institute of Technology (ETH Zurich) and an MBA from UCLA Anderson School of Management.

Gavin Sallery


Gavin has 25 years of technology experience, managing and delivering large projects across a range of sectors. This includes two decades of consultancy expertise for clients in the City of London, and significant exposure to outsourcing and multi-national projects. He currently leads KiWi Power’s in-house Technology function, working to build on our award-winning hardware and software portfolio.

Gavin holds a BSc (Hons) in Computer Science from Warwick University.

Paul Barritt


Paul has extensive international corporate finance and financial leadership experience in small to mid-sized, high growth companies across the cleantech and renewables sectors.  He has spent 12-years working in Italy as advisor and then CFO of an Italian electrolyser and fuel cell development company from start-up, through IPO to commercialisation, before becoming CEO to lead the company through a successful financial restructuring and exit.  Prior to that Paul was Director of an independent corporate finance advisory firm and has raised over £200m for UK and European high growth companies across the high-tech, retail, distribution, manufacturing and internet sectors.

Paul holds an MA and BA Hons (First Class) in Classics from St Johns College, Oxford University.