Who are we?

Constantine Energy Storage was founded in 2021 by Constantine Group to manage the construction and ownership of a portfolio of battery energy storage systems. The initial portfolio of over 1GWh of storage began construction in 2022.

The Team

Dominic Akers-Douglas, Chairman

Dominic joined the company as Commercial Director in 2008 from investment bank Morgan Stanley and became Chief Executive in 2021. He set up Constantine’s investments in the Energy sector and is Chairman or Non-Executive Director of all the Group’s operating companies.

Graham Peck, Investment Director

Graham joined Constantine Group in 2019 from Civitas Investment Management, having spent the last ten years in various senior positions within the investment management sector. He provides financial and investment oversight for the group’s investments, and is a non-executive director of all the group’s operating companies. Graham is a chartered accountant and member of the ICAEW.

Mike Ryan, Commercial Director

Mike joined Constantine Energy Storage in 2021 and is responsible for the commercial performance of the portfolio. He has more than 15 years’ experience in the energy industry and, prior to Constantine Energy Storage, worked for Habitat Energy, Anesco and National Grid ESO and holds a degree in Electromechanical Engineering.

Louis Burford, Operations Director

Louis joined Constantine Energy Storage in 2021 and is responsible for the construction and operation of the portfolio. He has over 15 years’ experience in the energy industry and prior to Constantine Energy Storage worked for Centrica, REstore and British Gas.

Guy Walker, Finance Director

Guy Walker, Finance Director of Energy Storage at Constantine Group, brings over 12 years of infrastructure sector expertise. Joining in 2023, he oversees day-to-day finances and handles financial/statutory reporting for Energy Storage companies within Constantine Group.

Previously, as European Head of Finance at John Laing Group Limited, he managed finances and valuations for European entities and investments across various infrastructure sectors.

Guy, a Chartered Accountant and Fellow of the ICAEW, began his career with PwC in audit before joining John Laing in 2010.

Phil Pugh, Projects Director

Phil joined Constantine Energy Storage in 2022 and is responsible for project construction. Phil has over 11 years’ experience in the energy industry and prior to Constantine Energy Storage worked for National Grid. Phil holds a degree in Electrical and Electronic Engineering.

Alex Calver, Commercial Analyst

Alex Joined Constantine Energy Storage in 2023 and works on the commercial performance of the portfolio. He holds a degree in MORSE (Mathematics, Operational Research, Statistics and Economics) and previously worked at National Grid ESO and OVO Energy

Scott Williamson

Prior to Constantine Energy Storage, Scott operated and maintained Gresham House’s storage assets. He has also handled the construction, commissioning and maintenance of storage assets at RES power.