Montana-Dakota Utilities Signs Power Purchase Agreement with N.D. Wind Project

  Montana-Dakota Utilities Signs Power Purchase Agreement with N.D. Wind

Business Wire

BISMARCK, N.D. -- October 28, 2013

Montana-Dakota Utilities Co., a division of MDU Resources Group, Inc.
(NYSE:MDU), announced today that it has signed a power purchase agreement with
Thunder Spirit Wind LLC, a subsidiary of Wind Works Power Corp.

The agreement is for approximately 105 megawatts of installed capacity of wind
turbine generators to be located in southwest North Dakota near Hettinger. The
generation will interconnect at Montana-Dakota’s substation near Hettinger.
The project is expected to begin commercial operation in the fourth quarter of

Montana-Dakota issued a request for proposal earlier this year for electric
capacity and energy. The Thunder Spirit Wind proposal will provide
Montana-Dakota customers with stable pricing over the 25-year contract.

“This is a competitively priced agreement that will serve our customers for
many years to come,” said K. Frank Morehouse, president and CEO of
Montana-Dakota Utilities. “Moving some of our current market energy purchases
into a fixed contract helps protect our customers from unexpected changes in
market pricing.”

In addition to renewable generation owned by Montana-Dakota, the agreement
with Thunder Spirit Wind means 20 percent of Montana-Dakota’s energy supply
requirements will come from renewable resources.

Montana-Dakota Utilities Co. distributes natural gas and generates, transmits
and distributes electricity and provides related services in the northern
Great Plains. The company serves approximately 135,000 electric customers and
245,000 natural gas customers in 262 communities in North Dakota, South
Dakota, Montana and Wyoming. Montana-Dakota is a division of MDU Resources
Group, Inc., a diversified natural resources company traded on the New York
Stock Exchange as “MDU.” For more information about MDU Resources, visit the
company’s Web site at For more information about Montana-Dakota,


MDU Resources Group, Inc.
Mark Hanson, 701-530-1093
Senior Public Relations Representative
Phyllis Rittenbach, 701-530-1057
Director of Investor Relations
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