Mark Easter

Mark leads Amberside Advisors' global commercial and transaction advisory strategy for the Energy Transition sector. He is responsible for expanding the practice across new services, sub-sectors, and geographies, supporting clients to unlock investment in decentralised and low-carbon energy infrastructure.

Since joining Amberside in 2022, Mark has built a high-performing, cross-disciplinary team and significantly grown the firm’s commercial advisory offering. His leadership has secured major clients — from blue-chip corporates and investment funds to public-sector bodies — and delivered standout success in commercialising heat sector opportunities in the UK. His work has helped establish Amberside as a market leader in decentralised energy advisory.

Previously, Mark held a senior leadership role at ENGIE Urban Energy, where he managed the UK’s largest district energy portfolio (560MWth) and led high-profile projects including the Olympic Park, Embassy Quarter Nine Elms, and Battersea Power Station. He provided commercial and risk leadership across ENGIE’s national portfolio.

Mark began his career at Lendlease Infrastructure before moving into energy services with Cofely GDF-SUEZ, working across district energy, solar, and gas mobility.

He holds a BA in Natural Sciences, an MSc in Economics, and an Executive MBA from Cranfield School of Management. He is also a Chartered Fellow of the Chartered Management Institute (CMI).