The Home Energy Conservation (HecAction) award marks the city council's successful bid Monergy loan scheme.
The Monergy scheme provides low interest loans for householders to carry out energy efficiency improvements. It is available to homeowners in the city's four maintenance areas.
The scheme is funded by a£100,000 grant to the council from the Energy Savings Trust. Loans made under the scheme are repaid and the cash then becomes available to further applicants. Bristol Care and Repair operate the scheme on city council's behalf.
The award, sponsored by the Chartered Institute of Housing and Inside Housing magazine, was won for good practice in human resource management.
Bristol's programme to develop core skills and understanding among housing staff beat off strong competition from Epping Forest and Sunderland councils to win.
Housing committee chair Celia Lukins said: 'These awards underline some of our priorities. Winning extra resources, investing in energy conservation and ensuring that our people have the skills to deliver top class service'.