Belfast City Council has kept its A-grade rating for climate action from the Carbon Disclosure Project for the fourth consecutive year. The council leads cities in Ireland with this status.

Councillor Micheal Donnelly, chair of the council's Climate and City Resilience Committee, noted council efforts on active travel, pollution reduction, tree planting, clean transport, improved heating and power methods, city greening, and a sustainable food network. He stated the council works to secure Belfast's safety and stability for current and future residents.

Over 200 council venues, including City Hall, Belfast Zoo, and leisure centres, now use green electricity from a wind farm at Ballyutoag in the Belfast Hills.

Solar panels on Donegall Pass Community Centre power the building and its activities. Since activation in March, the centre has operated off-grid for 80% of the time. Smaller solar installations exist at the Grow NI community garden in the Waterworks to test expansion to other properties.

Of the council's 410-vehicle fleet, 235 run on Hydrogenated Vegetable Oil, a fuel from waste renewable materials that cuts CO2 emissions by up to 90% compared to fossil diesel. An additional 31 vehicles are electric with zero CO2 emissions, plus one hybrid.

The council's Net Zero Neighbourhood Framework engaged residents on net zero living. The completed UP2030 project covered areas including Linen Quarter, Sandy Row, Barrack Street, Donegall Pass, and the Market. It examined energy-efficient homes, trees, green spaces, and safer walking and cycling routes.