ATCO Ltd. to Release 2010 Year-End Results Wednesday, February 23, 2011

CALGARY, ALBERTA--(Marketwire - Feb. 16, 2011) - ATCO Ltd. (TSX:ACO.X) (TSX:ACO.Y) will release its financial results for the fourth quarter and the year ended December 31, 2010 on Wednesday, February 23, 2011. The news release will be distributed via www. marketwire.com and the results, including Financial Statements, Management's Discussion & Analysis and the Annual Information Form, will be posted on www.atco.com.

Alberta-based ATCO Ltd., with more than 7,500 employees and assets of approximately $10 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), Structures & Logistics (manufacturing, logistics and noise abatement) and Technologies (business systems solutions). More information can be found at www.atco.com.

Forward-Looking Information:

Certain statements contained in this news release may constitute forward-looking information. Forward-looking information is often, but not always, identified by 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. 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.