Our Leadership Team

DeltaQ is about making a positive difference, to our clients, our society, and the environment. We are a group of engineers, project managers, analysts, scientists and strategic thinkers with a track record of helping building owners manage their energy use. Our goal is to provide active leadership in the evolving energy efficiency industry.

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Caoimhin Ardren

Managing Director – Caoimhin is a recognised national expert with over 25 years\’ experience in the project management and planning of energy efficient and sustainable precincts. Caoimhin was the primary author and developer of the Energy Efficiency Council accreditation scheme for project management of energy efficiency retrofits. He continues as a lead assessor under the accreditation scheme. Caoimhin has numerous publications in the field of project management of energy efficient building developments and retrofits, presented both nationally and internationally.
 
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Dr Paul Bannister

Director of Innovation – Paul has more than 25 years\’ experience in the energy efficiency sector and is an international authority on energy efficiency in the built environment. Paul is well-known for his role as the primary technical author of the NABERS Energy and Water ratings (including the New Zealand and UK adaptations) and the National Construction Code Section J 2019 revision. Paul has over 100 publications in the field of energy use and the built environment. Paul was recently appointed to the ACT Climate Change Council and is a Fellow of the Institution of Engineers Australia.
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Grace Foo

Principal Consultant – Grace has managed and delivered successful energy efficiency projects for the past decade, with the capability to convert technical recommendations into cost-effective and commissionable projects where investment performance can be measured and proven. Grace is also experienced in delivering policy work for a number of projects commissioned by Federal Government agencies, State Government, Local Governments and various Government-owned corporate entities. She is well-acquainted with Department of Defence governance structures, having spent some time within a procurement assurance role negotiating contracts for innovative technologies to enhance Defence capability. Grace is Carbon Neutral Accredited Assessor, Certified Measurement and Verification Professional (CMVP), Certified Energy Efficiency Leader, NABERS Auditor, Supervisor and Trainer and Independent Design Review member.
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Steve Castell

Principal Consultant – Steve has more than 15 years\’ experience in the property and energy industry. He specialises in compliance reporting (NGERS, GRI, GRESB), portfolio strategic energy management planning including budgets planning, process optimisation and continuous improvement, as well as embedded network feasibility and management. In a previous role, Steve managed the energy and environmental performance of the City of Sydney’s property portfolio and is well-acquainted with Local Government Area governance structures.
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James Spears

Principal Consultant – James has more than 8 years\’ experience in energy efficiency, design reviews, building tuning and HVAC optimisation. His strengths lie in a system-based understanding of energy use within systems, and strong knowledge of how interacting systems can be optimized for the greatest system-wide efficiency. As a specialist in retrofitting and upgrading existing buildings, James has first-hand experience fixing the issues that cause building designs to fall short of their sustainability objectives. James has also been involved in the research and analysis behind the recent revisions to Section J of the 2019 National Construction Code. In particular, James was heavily involved in the benefit cost analysis surrounding pumps, fans, pipework and ductwork. James is a a Chartered Engineer in the fields of Mechanical, Environmental and Building Services Engineering, as well as a Certified Energy Efficiency Specialist (CEES).