20100811News Release.pdf

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Intermountain Gas files for an overall decrease to its prices
BOISE, IDAHO -August 11,2010 - Intermountain Gas Company fied for a 0.83 percent decrease to its
anual Purchased Gas Cost Adjustment application with the Idaho Public Utilities Commission. The request is
for a decrease of approximately $2.2 milion and if approved, would be effective October 1,2010.
Residential customers using natural gas for space heating and water heating wil save an average 1.58 percent or
$0.90 a month, while customers using natual gas only for space heating wil see an average increase of $0.09 a
month or 0.20 percent, based on average weather and usage.
Commercial customers, on average, would have a savings of$0.18 (0.07%) per month.
"We are very pleased to be able to hold the line on natural gas prices this year." said Fran Morehouse,
Executive Vice President and General Manager of Intermountain. "The overall demand for natural gas remains
low while natural gas supplies are plentifuL. This continued imbalance between supply and demand has kept the
near term prices for natural gas relatively low. Some of our customers wil see a decrease while others wil
have a slight increase. This is due to the inclusion of all costs of getting the gas from the producers to the end
users. While the cost of the gas declined, the costs of transporttion and delivery have increased."
Intermountain continues to urge all its customers to use energy wisely. Conservation tips and information on
governent payment energy assistance are provided through bil inserts and on the company's website
(ww.intgas.com). The website also outlines a number of programs and tips to help our customers level out
their energy bils over the year, and stabilize the potential impact that cold weather wil have during periods of
higher natural gas usage.
A Purchased Gas Cost Adjustment application is filed each year to reflect the costs Intermountain incurs on
behalf of its customers in its sales prices. The request is subject to public review and approval by the Idaho
Public Utilities Commission. A copy of the application is available for review at the Commission and
Intermountain Gas offces and on the Commission's homepage.
Intermountain Gas Company is a natural gas distribution company serving approximately 305,000 residential,
commercial and industrial customers in 74 communities in southern Idaho. Intermountain is a subsidiary of
MDU Resources Group, Inc., a multidimensional natural resources enterprise traded on the New York Stock
Exchange as "MDU " For more information about MDU Resources, visit the company's website at
www.mdu.com. For more information about Intermountain, visit www.intgas.com
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Media Contact: Brent Wilde at [phone]