KCC expects the cost to be recouped by 2029.
Energy up-grades to Kildare's Fire Stations are costing €250,000.
The stations are in Naas, Newbridge, Athy, Monasterevin, Maynooth and Leixlip.
Kildare County Council says the heating systems are being brought up to date, solar panels are being installed, and lighting and insulation improved.
The total cost of the works, according to the 2020 annual report, has a "payback time ranging up to 8 years".

Friday's Kfm Obituary Announcements
New Cultural Programme Set For Castletown House
Celbridge Woman Who Lost Sister To CF Calls For People To Support Today's Fundraiser
Protestors, Including Kildare's John Dallon, Refused Entry From Government And Agriculture Bodies Meeting
Defence Forces Travelling To The Curragh Today For Training
Newbridge Silverware’s Silver-plated Cutlery Factory Officially Closes
Martin Heydon Will Meet Farming And Haulier Groups This Morning Amid Fuel Protests
Missing 17-Year-Old Joshua Treacy From Maynooth Has Been Located