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HELENA, MT -- Montana adopted an updated statewide energy code that requires all new houses meet requirements that lead to better energy efficiency. The state will now abide by the 2009 International Energy Conservation Code. Data indicates such action while building new homes will produce 15 to 18 percent gains in energy efficiency which translates into immediate savings on the homeowner's energy bill. Department of Energy figures indicate the average gas bill right now is $95 a month, but adopting the new code will save homeowners between $168 and $276 a year. "This progressive approach allows our citizens to capture benefits of the energy-saving standards which result in continued returns", said Labor Commissioner Keith Kelly.

Specific changes with the new Montana energy code include:

• Modest increase in wall and ceiling R-value of insulation

• Windows need to be more efficient to protect against heat loss

• At least one-half of the permanent light fixtures must have high efficiency light bulbs

• Heating system ductwork located outside of the conditioned (heated) part of the house must be tested for tightness

• Programmable/setback thermostats are required in homes with furnaces

The changes also include the requirement that basement walls be insulated to prevent the loss of energy through those walls, a stipulation that had a mixed reaction to the cost benefit of the regulation's requirement. Forty-two states and Washington D.C. adopted the International Energy Conservation Code, but Montana is one of the first six states to adopt the 2009 edition of the IECC.