Nottingham City Council has smashed its 2020 climate change targets four years early.
It has achieved a 33% reduction in carbon emissions since 2005, beating its 26% goal.
The council adds it is now producing almost three tonnes less CO2 per year per person than in 2005.
A significant part of the reduction – around 13% – is said to have been due to the popularity of public transport, cycling and walking in the city.
The council claims to have Europe’s largest fleet of electric buses, added new tram routes and invested £6.1 million in improving cycling routes to provide alternatives to using cars.
Councillor Alan Clark, Nottingham City Council’s Portfolio Holder for Energy and Sustainability adds: “Data shows that since 2011-12 there has been a significant fall in the city’s carbon emissions due to a reduction in domestic energy use.
“This coincides with our programme of energy saving investments in social housing such as external wall insulation programmes which have also been open to private owners and the installation of solar panels on over 4,000 of council house roof tops.”