Bristol City Council has managed to reach its carbon reduction target three years ahead of schedule.
It surpassed its goal of 50% reduction in carbon emissions from its operations, delivering a 60% cut in 2016/17.
That was a result of making its buildings more energy efficient, investing in renewable energy projects such as wind turbines and solar panels and upgrading its street lighting.
The council is now proposing a new target of 65% by 2020 from its own operations, alongside a refreshed environmental policy.
The overall target for the city is to reduce emissions by 40% from the 2005 baseline.
Marvin Rees, Mayor of Bristol, said: “We are leading the way in our efforts to reduce the environmental impact of council operations across the city.
“With a large number of public buildings to manage alongside a busy and mobile workforce, we have a responsibility to ensure we are running services as efficiently and sustainably as possible. That is why we have made investments in renewables and worked hard to reduce our energy use across our operations.”