New Arup and The Earthshot Prize report identifies 11 city-led proven climate solutions

• The new Champions of Change report offers a practical “greenprint” to help cities and regions scale and replicate proven climate solutions.
• It highlights 11 proven climate innovations across mobility, air quality, waste, restoration, and finance.
• The report was shaped with input from a global taskforce, including experts from C40, The World Bank and MIT who curated pioneering climate initiatives and identified scalable strategies for risk mitigation and adaptation.
• Cities account for over 70% of global CO2 emissions, making their leadership essential to accelerating climate action.

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Eleven transformative, public-sector-led solutions showing how cities and regions can rapidly scale climate solutions are showcased in a new report from built environment consultancy Arup and supported by The Earthshot Prize, the world’s most prestigious and impactful environmental award.

Cities house over 55% of the global population – a share projected to reach 68% by 2050. They account for more than 70% of global CO₂ emissions and consume around three-quarters of global energy, making them both the greatest contributors to the climate emergency and the places where its impacts are most concentrated. Yet their density, innovation, and governance make them powerful engines for climate action, capable of driving systemic, inclusive, and scalable change.

The Champions of Change: How cities and regions are designing a low carbon, climate resilient future report provides a “greenprint” for replicating and scaling innovations that deliver measurable social, economic and environmental benefits.

Designed to move beyond inspiration and into implementation, this report offers a practical guide for mayors, planners and policymakers, ready to design a sustainable, resilient future.