AltaGas Appoints New Member to Board of Directors

CALGARY, ALBERTA--(Marketwire - Nov. 30, 2011) - AltaGas Ltd (AltaGas or the Corporation) (TSX:ALA) today announced the appointment of Catherine M. (Kay) Best, FCA, ICD.D, to the Board of Directors of AltaGas Ltd., effective November 30, 2011.

Ms. Best is currently a director of Canadian Natural Resources Limited, Enbridge Income Fund Holdings Inc. and Superior Plus Corporation. She is an active member of the volunteer community and has served as Chair for the United Way of Calgary. Ms. Best currently serves as a member of the Audit Committee of the Calgary Exhibition and Stampede and as a director of the Alberta Children's Hospital Foundation and The Calgary Foundation. She also serves on the Audit Committee of the University of Calgary.

"It gives me great pleasure to welcome Ms. Best to the Board of Directors of AltaGas," said David Cornhill, Chairman, President and CEO of AltaGas. "Ms. Best brings a wealth of knowledge and will make an excellent addition to our Board as we position AltaGas for continued growth."

Ms. Best is a Chartered Accountant and a Fellow of the Chartered Accountants as awarded by the Institute of Chartered Accountants of Alberta. She was the Executive Vice-President, Risk Management and Chief Financial Officer of the Calgary Health Region from 2000 to March 2009 and in that role was responsible for all finance functions. Before joining the Calgary Health Region she was with Ernst & Young in Calgary for nineteen years, the last ten as Corporate Audit Partner.

AltaGas is an energy infrastructure business with a focus on natural gas, power and regulated utilities. AltaGas creates value by acquiring, growing and optimizing its energy 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.