AltaGas Income Trust Announces Monthly Distribution

September 12, 2007

CALGARY, ALBERTA--(Marketwire - Sept. 12, 2007) - AltaGas Income Trust (AltaGas or the Trust) (TSX:ALA.UN) today announced that a monthly distribution will be paid on October 15, 2007 to holders of record on September 25, 2007, of Trust Units and limited partnership units that are exchangeable into Trust Units (Exchangeable Units). The amount of the distribution will be $0.175 for each Trust Unit and each Exchangeable Unit.

As previously announced in the Trust's second quarter earnings release, a special distribution of one AltaGas Utility Group Inc. (Utility Group) common share for every 100 Trust units and Exchangeable units of AltaGas held on August 27, 2007 will be made on September 17, 2007. As part of the distribution plan, any Trust unitholder allocated fewer than 50 common shares of Utility Group will receive cash. The cash received by Trust unitholders will be based on the proceeds received on sale of the Utility Group shares. Fractional shares will not be distributed and the number of common shares of Utility Group distributed to each holder will be rounded down to the next whole number of common shares.

Registered holders of record of Trust and Exchangeable units (collectively Unitholders) will receive a share certificate for common shares of Utility Group in the mail. Common shares distributed to non-registered Unitholders will be credited to their investment accounts. Non-resident Unitholders will be subject to withholding taxes as a result of the distribution of Utility Group common shares.

AltaGas has a Premium DistributionTM, Distribution Reinvestment and Optional Unit Purchase Plan (the Plan) for eligible Unitholders of AltaGas Income Trust and AltaGas Holding Limited Partnership No. 1. Information on the Plan is available on the AltaGas website at

Effective with the August 15, 2007 distribution payment, AltaGas has suspended the Premium component of the Plan. The regular component of the DRIP will remain in effect and will continue to support the Trust's financing strategy. In the future, as conditions warrant, the Trust may consider reinstating the Premium DRIP (PDRIP) component based on AltaGas' capital requirements and desire to maintain an efficient capital structure. While the PDRIP component of the plan is suspended, PDRIP participants will continue to receive regular cash distributions.

AltaGas Income Trust is one of Canada's largest and fastest growing integrated energy infrastructure and services organizations. The Trust creates value by growing and optimizing assets and services across the energy value chain to serve North America's energy demand. Since 1994, AltaGas Income Trust has expanded its business to include natural gas gathering, processing and transmission, extraction of ethane and natural gas liquids, power generation, marketing of natural gas and natural gas liquids, as well as retail energy services to commercial, industrial and institutional end-users across Canada.

AltaGas Income Trust's units are listed on the Toronto Stock Exchange under the symbol ALA.UN. The Trust is included in the S&P/TSX Composite Index, the S&P/TSX Income Trust Index and the S&P/TSX Capped Energy Trust Index.

This news release contains forward-looking statements. When used in this news release, the words "may", "would", "could", "will", "intend", "plan", "anticipate", "believe", "seek", "propose", "estimate", "expect", and similar expressions, as they relate to the Trust or an affiliate of the Trust, are intended to identify forward-looking statements. In particular, this news release contains forward-looking statements with respect to, among other things, business objectives, expected growth, results of operations, performance, business projects and opportunities and financial results. These statements involve known and unknown risks, uncertainties and other factors that may cause actual results or events to differ materially from those anticipated in such forward-looking statements. Such statements reflect the Trust's current views with respect to future events based on certain material factors and assumptions and are subject to certain risks and uncertainties, including without limitation, changes in market, competition, governmental or regulatory developments, general economic conditions and other factors set out in the Trust's public disclosure documents. Many factors could cause the Trust's actual results, performance or achievements to vary from those described in this news release, including without limitation those listed above. These factors should not be construed as exhaustive. Should one or more of these risks or uncertainties materialize, or should assumptions underlying forward-looking statements prove incorrect, actual results may vary materially from those described in this news release as intended, planned, anticipated, believed, sought, proposed, estimated or expected, and such forward-looking statements included in, or incorporated by reference in this news release, should not be unduly relied upon. Such statements speak only as of the date of this news release. The Trust does not intend, and does not assume any obligation, to update these forward-looking statements. The forward-looking statements contained in this news release are expressly qualified by this cautionary statement.

AltaGas Income Trust
C.J. Wilkins
(403) 691-9890


Investment Community:
AltaGas Income Trust
Stephanie Labowka-Poulin
(403) 691-7136


AltaGas Income Trust
Investor Relations