Leadership Team

Our ambition is to provide more than a gigawatt of energy storage capacity in the UK and to become a leading provider of energy storage and optimisation services globally. Meet the people that will be leading us forward.

Executive Team

Paul Massara

Chief Executive Officer

Appointed CEO on 14th November 2022, Mr. Paul Massara holds a number of Non- Executive roles including the Chair of Sovereign Housing, Chair of Utonomy, and Board advisor to a number of energytech start-ups. In addition to these roles he is also member of the Committee on Fuel Poverty at BEIS. He also works with Said Business School, Oxford University, as a mentor and advisor for their Creative Destruction Lab. Prior to his current roles, he was CEO of RWE npower and served on the Executive Committee of RWE AG as well as being the Country Chair for RWE in the UK responsible for all Government and policy issues. As member of the RWE Retail Board, he was responsible for coordinating 23 million B2C customers and led the digitalization of RWE in the UK and Europe. Before joining RWE , he held a variety of positions with increasing responsibility with Centrica plc, Direct Energy North America, in Toronto. His tenure there culminated in his role as President of Canadian Operations and serving as a Member of the North American Board and the North America Executive Committee. His leadership enhanced the Company’s growth from $700,000MM to $2.7Bn, and from 600 to 3,000 employees. He was voted Top 40 Under 40 in Canada in 2004 and was Chair of the Toronto Board of Trade. He holds both British and Canadian nationality.

Trevor Wills

Chief Operating Officer

Trevor has more than 15 years of international experience in the energy sector, having worked on transactions and projects in Canada, the United Kingdom, the United States, Mexico, and Australia. Trevor holds a B.Sc. Engineering from the University of Alberta and an M.Sc. Management (with Distinction) from the London School of Economics and Political Science.

Nicola Johnson

Chief Financial Officer

Nicola spent 18 years in the property and construction industry in numerous financial roles across property developments, PFI & PPP projects, investment management of large retail and PFI & PPP funds, and in corporate & treasury focussed activities.  Following this, Nicola moved into the renewables industry at a solar developer, owner & operator.  Nicola holds a Bachelor of Business from the University of Technology, Sydney and is a member of the Chartered Accountants of Australia.

Pauline Barker

Investment Director

Pauline has led and worked on a suite of renewable investments in Europe and North America, including Biogas, Offshore Wind, Solar and Hydrogen. Pauline holds a MEng in Engineering from Durham University and a Diploma in Management Accounting from the Chartered Institute of Management Accounting.

Aazzum Yassir

Head of Technology and Innovation

Aazzum has more than a decadesexperience in the clean energy sector, having worked on numerous projects across Europe. Aazzum has been at the forefront of 5 major technology changes over the last decade which will help decarbonisation goals. Off shore Wind Farms, HVDC VSC technology, Battery Storage, Microgrids, and Digitalisation. Aazzum holds a Masters in Mechatronics Engineering from the University of Manchester and is a Charted Electrical Engineer.

Vasilis Ntanovasilis

Head of Construction

Vasilis Ntanovasilis has over a decade experience in the delivery of large-scale renewable energy projects across Europe. He holds aBachelor of Mechanical Engineering and Advanced Diploma in Contract Management.

Board of Directors

Alison Kay

Chairperson of the Board

Alison was Group General Counsel and Company Secretary for National Grid plc from January 2013 until December 2020. As such, she was responsible for shaping the Group legal function within National Grid and providing Company Secretariat support to the Boards and Committees of National Grid. She was also responsible for Risk, Ethics and Compliance and oversaw Health and Safety activities on a Group level. At the end of 2020, Alison assumed an interim role as Director of Strategy and Corporate Affairs, in which she was responsible for shaping National Grid’s Strategy, identifying and executing M&A opportunities and overseeing the external communications function. She also ran the Company’s entrepreneurial and disruptive technology arm, based in California. Formerly, Alison was Commercial Director, Transmission at National Grid working with the gas and electricity industries in the UK and Europe to influence the legal and regulatory regimes in which National Grid operates, to deliver improved efficiency and reliability, whilst facilitating security of supply for Britain. Prior to this Alison was General Counsel and Company Secretary for National Grid Electricity Transmission plc and National Grid Gas plc. Alison qualified with corporate solicitors, Martineau Johnson and spent 8 years in private practice before joining National Grid Company plc in 1996. She is married and lives in Stratford upon Avon. She has extensive external industry exposure including a number of positions on European and UK Committees. From 2006 to 2011 she was Chair of the Electricity Pension Scheme and Chaired Enabling, National Grid's Disability Network.

Matthew Mendes

Non-Executive Director

Matt has executed investments involving onshore and offshore wind and solar projects, tax equity financing, corporate power purchase agreements, and energy production hedging. In total, Matt has been involved in the execution of more than $100 billion of corporate M&A transactions. Matt holds a B.A. in Economics from McGill University and a Master’s in Economics (with High Distinction) from the University of Sydney.

Polina Sims

Non-Executive Director

Polina has over 15 years of principal investing, advisory, and asset management experience. Previously, she was a Managing Director at CPP Investments with the global Portfolio Value Creation team where she was responsible for identifying and realizing value creation opportunities across the firm’s infrastructure, natural resources, private equity, and real estate programs, working with portfolio companies in North America, South America, and Europe. Prior to CPP Investments, Polina was a Partner with Boston Consulting Group (BCG) in San Francisco, Boston, and Toronto, where she provided strategic, growth, restructuring and cost efficiency advice to some of the world’s leading companies. Polina holds an MBA from Harvard Business School, a B.S. in Economics from The Wharton School of the University of Pennsylvania, and an ICD.D designation. Polina serves on the board of directors of Red Funnel (The Southampton, Isle of Wight and South of England Royal Mail Steam Packet Company Limited).