Niagara Mohawk Power Corporation Declares Preferred Stock Dividends

  Niagara Mohawk Power Corporation Declares Preferred Stock Dividends

Business Wire

SYRACUSE, N.Y. -- September 5, 2013

Niagara Mohawk Power Corp.(the “Company”), an indirect subsidiary of National
Grid USA (“National Grid”), announced that its Board of Directors has declared
dividends for the period July 1, 2013 to September 30, 2013 at the following
rates for all outstanding series of its preferred stock:

  *.85% on the $100 par value, 3.40% Series;
  *.90% on the $100 par value, 3.60% Series;
  *.975% on the $100 par value, 3.90% Series.

The preferred stock dividends are payable on September 30, 2013, to holders of
record on September 17, 2013.

The Company, doing business as National Grid, provides electricity service to
approximately 1.6 million customers and natural gas service to approximately
565,000 customers in upstate New York. The Company is based in Syracuse, N.Y.

National Grid is an indirect subsidiary of National Grid plc (LSE: NG;
NYSE:NGG). National Grid delivers electricity to approximately 3.3 million
customers in Massachusetts, New York, and Rhode Island, and manages the
electricity network on Long Island under an agreement with the Long Island
Power Authority (LIPA) which agreement is scheduled to expire on December 31,
2013. It isthe largest distributor of natural gas in the northeastern U.S.,
serving approximately 3.4 million customers in Massachusetts, New York, and
Rhode Island. National Grid also owns over 4,000 megawatts of contracted
electricity generation that provides power to over one million LIPA customers.

Contact:

For Niagara Mohawk Power Corp.
Virginia Limmiatis, 315-452-7708
 
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