News

AltaGas Announces Monthly Dividend

September 10, 2010

CALGARY, ALBERTA--(Marketwire - Sept. 10, 2010) - AltaGas Ltd. ("AltaGas") (TSX:ALA) today announced that the September dividend will be paid on October 15th, 2010 to holders of record on September 27th, 2010, of common shares. The ex-dividend date is September 23rd, 2010. The amount of the dividend will be $0.11 for each common share.

AltaGas has a Dividend Reinvestment and Optional Share Purchase Plan for eligible Shareholders of AltaGas. Eligible Shareholders may reinvest the cash dividends paid by AltaGas on their common shares toward the purchase of new common shares at a five percent discount to the average market price as defined in the Dividend Reinvestment and Optional Share Purchase Plan.

AltaGas is one of Canada's largest and fastest growing energy infrastructure organizations. AltaGas creates value by acquiring, growing and optimizing gas and power infrastructure, including a focus on renewable energy sources. For more information visit: www.altagas.ca.

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 AltaGas or an affiliate of AltaGas, 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 AltaGas' 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 AltaGas' public disclosure documents. Many factors could cause AltaGas' 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. AltaGas 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.


Investment Community
Myles Dougan
(403) 691-7594 or 1-877-691-7199
investor.relations@altagas.ca
or
Media
Adrianne Lovric
(403) 691-9873
adrianne.lovric@altagas.ca
www.altagas.ca