Our Board

CEP Board members

Ben Thomson, Chair

Ben Thomson


Ben leads the Energy & Carbon team at Lumen helping a wide range of commercial and industrial clients transition to a decarbonised economy. He is based in Tauranga and has been working as an engineering consultant since 2013 after graduating from the University of Otago with a BAppSc(Hons) majoring in Energy Management. Ben joined the CEP Board in June 2020 and was appointed Chair in June 2021.

Jason Bretherton, CEP Board member

Jason Bretherton

Vice Chair

Jason is an Electrical Engineer with a Post Graduate Diploma in Management. He has worked as an engineering consultant in the building services industry in New Zealand and overseas for more than 25 years. In his current role as a Technical Director at WSP based in Christchurch, Jason provides technical leadership, high level concept design advice and undertakes critical review across a diverse range of projects. He has a passion for energy efficiency and sustainability and strives to deliver a high degree of integration by applying a whole-of-life approach. Jason joined the Board in September 2021 and appointed Vice Chair in July 2023.

Yvonne Gilmore, Treasurer

Yvonne Gilmore


Yvonne has worked in utilities management both internationally and locally for more years than she likes to admit. She believes strongly in sustainability and leaving a smaller footprint on the planet. Yvonne is an independent consultant based in Christchurch. She joined the Board in May 2017, and was appointed Chair from June 2018 until June 2021.

Tania Coelho

Tania Coelho

Tania is the Energy Manager Sustainability Solutions at Total Utilities Management Group Ltd. She is an Electrical Engineer with a Masters in Finances. With a background in project management, large-scale solar and wind generation projects, energy consulting and analytics she builds strong relationships with clients and creates bespoke energy solutions that meet their unique requirements. Tania joined the Board in May 2019.

Kevin McGrath, CEP Board member

Kevin McGrath

Kevin is the Director of Power Solutions Ltd, a company that has been providing energy management services for almost 25 years and specialises in electrical engineering design, street lighting design and network management. He advises extensively to the public sector Kevin joined the Board in May 2016.

Eugene Robson - CEP Board member from June 2023

Eugene Robson

Eugene is a Senior Engineer at DETA Consulting, providing tailored energy and carbon reduction advice to a wide range of industrial and commercial clients across New Zealand, Australia and the Pacific Islands. He has worked in the industry since 2011, is a Chartered Professional Engineer and holds a BE(Hons) in Mechanical Engineering. Eugene is based in Tauranga and joined the CEP Board in July 2023.

Russell Baillie - CEP Board member

Russell Baillie

Russell has been a long-term CEP member and joined the CEP Board in July 2023.

CEP Board member - Dan Tomlinson

Dan Tomlinson

Dan is a CEP Partner Panel member and joined the CEP Board in August 2023.

CEP Board Member Emily Liang

Dr Emily Laing

Emily is the Head of Strategy at BraveTrace. She is a strategy and performance expert, with experience in climate and energy strategy across government, academia and the private sector. She holds a business degree from Eckerd College in Florida, and a PhD in project management from the University of Canterbury, where her thesis focused on the impacts of large scale solar energy infrastructure development projects in the Pacific Islands. Emily is passionate about climate action, in particular, the transition to a renewable future and the co-creation of a circular economy. Emily is based in Te Whanganui-a-tara (Wellington) and joined the Board in December 2023.

CEP Board Member Don MacKenzie

Don MacKenzie

Don is the Sustainability and Business Operations Manager at CarbonEES. He is based in Wellington and has worked with central and local government authorities, banks, and research institutes on producing GHG inventories and decarbonisation strategies. He has a strong passion for measuring and reducing emissions, measuring his own emissions since January 2024. Don joined the CEP board in December 2023.