A series of energy saving measures by Barrow Borough Council has reduced the town hall's heating bill by more than one third.
The amount of gas consumed fell from 833,040 kwh in 2005/06 to 518,335 kwh in 2009/10.
This 38% drop resulted in a saving of £11,960 in the year.
Energy improvements in the town hall have included fitting energy efficient control pumps and thermostats, draft proofing and voltage regulation.
The council's chief executive Tom Campbell said: "The council is taking a lead in reducing energy costs and saving money for the taxpayer.
"We also have an excellent programme of energy improvement grants for elderly residents and we think a lot of local businesses could reduce their costs by paying more attention to energy efficiency."