A report on the climate action performance of all 31 local authorities highlighted a broad range of activities to reduce greenhouse gas emissions, lower energy bills and improve living conditions last year.
It said 2,634 social homes were retrofitted nationwide last year.
The vast majority, or 93%, achieved a BER energy rating of B2 or higher, the survey said.
This brought the total number of energy retrofits over the past three years to more than 7,300, with the amount of energy saved estimated at more than 100,000 megawatt hours.
The report claims this would be enough energy to run 6,000 homes in a single year.
The 2024 Local Government Climate Action Key Performance Indicators Report tracks climate measures related to housing, transport, business, community engagement and emergency response.
It showed that the total invested in active travel projects fell by 6.3%.
Despite this, it found the total kilometres of active travel infrastructure completed was up 7.3%.
In all, the report said 1,012 active travel projects were active or completed in 2024, including 181km of cycling and pedestrian infrastructure.
In addition, the survey said a total of 133 Severe Weather Emergency Response Plans were activated between all local authorities last year.
More than half were related to wind alerts, while just over a quarter were triggered by rain alerts.
Storms Ashley, Bert, Conall and Darragh swept across Ireland last year.
Meanwhile the report found there was a 68% reduction in climate action training for local authority staff and elected members.
No training was available during the first half of the year "primarily because the new sectoral plan and budget was being developed", according to the report.
The County and City Management Association expects to see a significant uptake in training when the 2025 figures are reviewed next year.
Climate action projects already rolled out include a sustainable fashion drive spearheaded by Meath County Council, which has successfully prevented 1,500 items of clothing going to a landfill.
In Co Tipperary, a new so-called 'mini-forest' - of more than 5,000 trees capable of capturing 65 tonnes of carbon every year - is flourishing on a local housing estate.
In Dún Laoghaire-Rathdown County Council, extra EV chargers are being installed and heat pumps fitted at local authority buildings.
Dr Bernie O’Donoghue Hynes, Head of Research at the Local Government Management Agency and lead author of the report, said local authorities reduced their combined carbon emissions last year by 34%.
