AltaGas First Quarter 2010 Results and Conference Call Advisory

April 21, 2010

CALGARY, ALBERTA--(Marketwire - April 21, 2010) - AltaGas Income Trust (AltaGas or the Trust) (TSX:ALA.UN) will announce its first quarter financial results on Thursday, April 29, 2010 before markets open. A conference call and webcast to discuss the results will be held the same day.

Time: 7:30 a.m. MT (9:30 a.m. ET)
Dial-in: 416-695-6616 or toll free at 1-888-952-4972

Shortly after the conclusion of the call, a replay will be available by dialling 416-695-5800 or 1-800-408-3053. The passcode is 1756544. The replay will expire at midnight (Eastern) on May 6, 2010. The webcast will be archived for one year.

AltaGas Income Trust is one of Canada's largest and fastest growing energy infrastructure organizations. The Trust creates value by acquiring, growing and optimizing gas and power infrastructure, including a focus on renewable energy sources.

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
Adrianne Lovric
(403) 691-9873
Investment Community
AltaGas Income Trust
Sheena McKellar
(403) 691-9855
AltaGas Income Trust
Investor Relations