NEW YORK (AFX) - The world's biggest stock exchange will open for trading Friday even if officials have to crank up back-up emergency power generators, a New York Stock Exchange (NYSE) spokeswoman said.

The exchange, which processes more than 1.3 bln share deals on an average day, can fully function on its back-up generators, she said.

The exchange oversees some 35 bln dollars worth of transactions each day, and is due to open for business at 9:30 am (1330 GMT).

New York city was left without electricity in Thursday's sudden power outage and remained blacked out late into the evening, along with several northeast US states as well as parts of Canada.

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