Over four years, 3Ci brought together local authorities, central government, investors and industry to develop new place-based approaches to financing net zero. Launched as a partnership between Connected Places Catapult, London Councils and Core Cities, the programme has since expanded to include a broad coalition of public and private sector partners across the UK.

The programme has focused on building project pipelines, improving the commercial readiness of local schemes, and aligning public and private capital around shared priorities.

Through this work, 3Ci has helped shift the focus from ambition to delivery at scale. It has demonstrated how aggregating projects across cities and regions can create the scale and certainty required by investors, while supporting local authorities to develop robust, credible investment propositions.

As the programme enters its next phase, delivery is transitioning to the Department for Energy Security and Net Zero. This ensures that the insights, partnerships and models developed through 3Ci continue at national scale, supporting the acceleration of investment into places across the UK.