Rotherham Council is the first in South Yorkshire to commit to a national environmental scheme.
Climate Local is a Local Government Association scheme to encourage councils to reduce carbon dioxide emissions.
The commitment was signed by Coun Roger Stone, Rotherham Council leader.
He said: “We recognise our council has an important role in helping residents and businesses capture the opportunities of action on climate change. These include saving money on energy bills, generating income from renewable energy, attracting new jobs and investment in ‘green’ industries, supporting new sources of energy and managing flood risk.”
The council now aims to promote schemes which will help residents and businesses reduce energy use, improve buildings so they are more fuel-efficient, and publish a report on progress annually.
David Rhodes, council corporate environmental manager, said: “We have confirmed our commitment to improving our environment.”
Councils are being challenged to take more action to protect the environment - due to changes including tougher European Union rules on air pollution and emissions.