2025 Impact Report
Welcome to the Infrastructure Sustainability Council’s FY25 Impact Report — capturing a year of measurable progress and collective achievement across Australia and Aotearoa New Zealand.
This year’s report captures a period of growth, resilience, and transformation for the infrastructure sustainability community. Despite economic and policy challenges, our members, partners, and practitioners have continued to drive meaningful impact — moving the sector toward a more inclusive, resilient, and restorative future.
As we close FY25, we also look ahead with the launch of Strategy 2030 — a roadmap to guide the next decade of transformation. Already, significant progress has been made this year, with the strategy expanding our reach into new sectors such as water and energy, strengthening our advocacy and partnerships, and reaffirming our core purpose: to enable connected infrastructure that supports people to thrive on a healthy planet.
In FY25, our community certified 29 As Built projects across rail, road, energy and water — achieving a combined emissions reduction of nearly 3.5 million tonnes of CO₂e and delivering $1.27 billion in avoided costs. These results demonstrate the environmental and financial value of sustainable infrastructure — and the real benefits of embedding sustainability into every stage of planning, design and delivery.
Beyond the numbers, FY25 marked important progress for the Council and our network:
- Evolution of the IS v2.2 Design & As Built Tool, improving clarity, flexibility and accessibility for projects of all sizes.
- Growth in membership, including the establishment of 10 new committees to drive collaboration, knowledge-sharing and advocacy across priority areas such as sustainable finance, modern slavery, and AI and digital innovation.
- Continued capability building, with over 1,000 professionals trained and record engagement across the RISE and WiSC mentoring programs.
- Strengthened thought leadership, with new work on decarbonisation, nature-positive infrastructure and the Taskforce on Nature-related Financial Disclosures (TNFD) framework.
- A strong year of events, including Connect Conferences in Sydney, Perth and Auckland, where our members came together to share, learn and celebrate the best in sustainability.