At ESG Strategy, our mission is to guide organisations through the complexity of sustainability with clarity and confidence.
Founded by Lee Stewart, a recognised sustainability leader and author of How to Build Sustainability into Your Business Strategy, ESG Strategy is built on over two decades of experience in executive sustainability roles across Australia, New Zealand, and the Pacific.
Lee has worked at the forefront of ESG and climate strategy, including leading sustainability for major corporates like Fonterra and Fujitsu, and delivering board-level programs on governance, disclosures, and climate risk. His expertise lies in translating sustainability requirements into practical, business-aligned solutions that drive measurable outcomes.
We wrote the playbook.
Now we help you apply it.
We work side-by-side with your team to build capability, clarity, and confidence, using our proven Triple C Framework: Confidence. Consistency. Commitment.
Let’s make ESG real, credible, and built to last.
“Simplifies decades of sustainability knowledge into an accessible guide.”
Amanda Steele
Group Executive Head of Property, ISPT
“I wish Lee had written this book 25 years ago, it would have saved us a lot of wasted effort.”
James Shaw
Former Climate Change Minister, NZ
AS SEEN IN
Founder
Lee Stewart
Lee is a best-selling author, seasoned ESG advisor, and founder of ESG Strategy. With over two decades of experience across Australia, New Zealand, Pacific, UK, and Japan, he has helped shape sustainability strategies for global brands and now supports organisations of all sizes to lead with integrity and impact.
Our Associates
Over the past two decades, we’ve worked with a network of exceptionally talented professionals many of whom have served as Chief Sustainability Officers delivering large-scale impact.
We’re proud to collaborate with this group of experts and trusted partners to deliver outstanding results for our clients.
Karl Check
Karl is a climate change specialist advising on net zero pathways & strategies to prepare for climate change consequences
Frank Hubbard
Frank brings 30+ years of operational and strategic ESG experience across tourism, property, and infrastructure.
Miranda Siu
Miranda is a Chartered Accountant with deep experience in sustainability reporting, carbon accounting, and climate risk governance.
Peter Mangin
Peter is a results-driven AI leader who helps business harness AI for growth, efficiency, and impact.
Chris Parks
Chris works with asset owners and investment managers to design and implement ESG and climate strategies across listed and unlisted portfolios.
Murray Hogarth
Murray is an experienced sustainability consultant, campaigner, and cleantech entrepreneur.
Our Partners
DETA Driving Sustainability Together
DETA collaborates with ESG Strategy to deliver integrated energy and sustainability solutions across New Zealand, Australia, and the Pacific. Together, we empower businesses to optimise energy, reduce carbon footprints, and achieve measurable progress in sustainability.
"ESG Strategy’s expertise was transformative in crafting and implementing a sustainability strategy for a key manufacturing client, earning exceptional feedback and delivering clear, impactful results.
Jonathan Pooch
Managing Director – DETA Consulting
About Positive Futures Advisory
Positive Futures Advisory, led by Roger Swinbourne, is a strategic partner of ESG Strategy. With over 25 years of experience in sustainability, resilience, and strategic planning, Positive Futures delivers innovative solutions to complex challenges across property, infrastructure, and policy sectors.
Drawing on Roger’s leadership roles at global firms such as Arup, AECOM, and Urbis, Positive Futures specialises in climate resilience, circular economy, and sustainable finance. The consultancy helps clients develop practical strategies that manage risks, meet regulatory requirements, and unlock long-term growth opportunities.
Focused on future-ready planning, Positive Futures combines business planning, governance, and risk management expertise to balance economic, social, and environmental priorities. Together with ESG Strategy, Positive Futures supports organisations in building resilient, sustainable outcomes that align with global standards and drive positive change.
