Press Release

DBRS Rates Hydro One’s New Issue at A (high)

Utilities & Independent Power
September 22, 2011

DBRS has today assigned a rating of A (high) with a Stable trend to Hydro One Inc.’s (Hydro One’s) proposed issuance of $300 million 4.39% medium-term notes (the Notes), maturing September 26, 2041. The Notes are expected to settle on September 26, 2011.

The Notes are issued pursuant to a Short Form Base Shelf Prospectus dated August 23, 2011, and will rank pari passu with all of Hydro One’s other unsubordinated and unsecured indebtedness.

Proceeds from the issue will be used for general corporate purposes.

Notes:
All figures are in Canadian dollars unless otherwise noted.

The applicable methodology is Rating Companies in the North American Energy Utilities (Electric and Natural Gas) Industry, which can be found on the DBRS website under Methodologies.