TransAlta Alberta Sundance 4 coal unit shut

NEW YORK Dec 3 (Reuters) - TransAlta Corp's (TA.TO) 406-megawatt Unit 4 at the Sundance coal-fired power plant in Alberta shut on Dec. 3, the Alberta Electric System Operator said in a report.

Since the middle of November, the unit shut on Nov. 17, returned by Nov. 29, shut again by Nov. 30, returned again by Dec. 2 and shut on Dec. 3.

Sundance is located about 40 miles (70 km) west of Edmonton, Alberta, on the south shore of Wabamun Lake. (Reporting by Scott DiSavino; Editing by John Picinich) ((scott.disavino@thomsonreuters.com; +1 646 223 6072; Reuters Messaging: scott.disavino.reuters.com@reuters.net)) ((For help: Click "Contact Us" in your desk top, click here [HELP] or call 1-800-738-8377 for Reuters Products and +1-888-463-3383 for Thomson products; For client training: training.americas@thomsonreuters.com; +1 646-223-5546))