CALGARY, ALBERTA--(Marketwire - June 18, 2012) - Canadian Utilities Limited announced today it has closed its previously announced public offering of Cumulative Redeemable Second Preferred Shares Series AA, by a syndicate of underwriters co-led by BMO Capital Markets and RBC Capital Markets, and including TD Securities Inc. and Scotiabank. Canadian Utilities Limited issued 6,000,000 Series AA Preferred Shares for gross proceeds of $150 million. The Series AA Preferred Shares will begin trading on the TSX today under the symbol CU.PR.D. The proceeds will be used to fund the previously announced redemption of all of the outstanding Cumulative Redeemable Second Preferred Shares Series X of Canadian Utilities Limited.

This news release does not constitute an offer to sell securities, nor is it a solicitation of an offer to buy securities, in any jurisdiction. All sales will be made through registered securities dealers in jurisdictions where the offering has been qualified for distribution.

Alberta-based Canadian Utilities Limited, an ATCO company, with more than 6,700 employees and assets of approximately $12 billion, delivers service excellence and innovative business solutions worldwide with leading companies engaged in Utilities (pipelines, natural gas and electricity transmission and distribution), Energy (power generation, natural gas gathering, processing, storage and liquids extraction) and Technologies (business systems solutions). More information can be found at [ www.canadian-utilities.com ].

Forward-Looking Information:

Certain statements contained in this news release may constitute forward-looking information.Forward-looking information is often, but not always, identifiedby the use of words such as"anticipate", "plan", "estimate", "expect", "may", "will", "intend", "should", and similar expressions. Forward-looking information involves 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 information. The Corporation believes that the expectations reflected in the forward-looking information are reasonable, but no assurance can be given that these expectations will prove to be correct and such forward-looking information should not be unduly relied upon. In particular, there can be no assurance that a transaction will be completed. Any forward-looking information contained in this news release represents the Corporation's expectations as of the date hereof, and is subject to change after such date. The Corporation disclaims any intention or obligation to update or revise any forward-looking information whether as a result of new information, future events or otherwise, except as required by applicable securities legislation.

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