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SUPPLEMENTARY INFORMATION (UNAUDITED)

Quarterly Share Trading Information

The Toronto Stock Exchange

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1. As a result of the elimination of the quarter lag basis of consolidation, Gas Distribution and Services financial and operating information for 2004 reflects earnings for the 15 months ended December 31, 2004 for Enbridge Gas Distribution (EGD), Noverco and other gas distribution entities. The 2003 data includes earnings for the 12 months ended September 30, 2003 for these entities, while 2005 and 2006 information is for the 12 months ended December 31, 2005 and 2006 for these entities.
2. Adjusted operating earnings applicable to common shareholders represents earnings applicable to common shareholders adjusted for non-operating factors primarily including non-operating gains and losses, the impact of weather, regulatory disallowances and impacts of tax rate changes. Adjusted operating earnings applicable to common shareholders is not a measure that has a standardized meaning prescribed by Canadian generally accepted accounting principles (GAAP) and is not considered a GAAP measure; therefore, this measure may not be comparable with a similar measure presented by other issuers. Management believes the presentation of adjusted operating earnings provides useful information to investors and shareholders as it provides increased predictive value and performance trends. Earnings for 2004 and 2003 have been adjusted to eliminate the quarter lag basis of consolidation described above.
3. Enbridge system includes Canadian mainline deliveries in Western Canada and to the Lakehead System at the U.S. border and Line 9 in Eastern Canada.
4. Volumes are for the Athabasca mainline only and do not include laterals on the Athabasca System.
5. Gas Distribution and Services volumes and the number of active customers are derived from the aggregate system supply and direct purchase gas supply arrangements.
6. Degree day deficiency is a measure of coldness which is indicative of volumetric requirements of natural gas utilized for heating purposes. It is calculated by accumulating for each day in the period the total number of degrees each day by which the daily mean temperature falls below 18 degrees Celsius. The figures given are those accumulated in the Greater Toronto area.

1. Adjusted operating earnings applicable to common shareholders represents earnings applicable to common shareholders adjusted for non-operating factors primarily including non-operating gains and losses, the impact of weather, regulatory disallowances and impacts of tax rate changes. Adjusted operating earnings applicable to common shareholders is not a measure that has a standardized meaning prescribed by Canadian generally accepted accounting principles (GAAP) and is not considered a GAAP measure; therefore, this measure may not be comparable with a similar measure presented by other issuers. Management believes the presentation of adjusted operating earnings provides useful information to investors and shareholders as it provides increased predictive value and performance trends. Earnings for 2004 and 2003 have been adjusted to eliminate the quarter lag basis of consolidation described above.
2. Earnings applicable to common shareholders divided by average shareholders' equity (weighted monthly during the year).
3. Sum of after-tax earnings (including earnings from discontinued operations) and after-tax interest expense, divided by weighted average capital employed. Capital employed is equal to the sum of shareholders' equity, EGD preferred shares, future income taxes, deferred credits and total debt (including short-term borrowings).
4. Total debt (including short-term borrowings) divided by the sum of total debt and shareholders' equity.
5. Total debt (including short-term borrowings) divided by average capital employed. Capital employed is equal to the sum of shareholders' equity, EGD preferred shares, future income taxes, deferred credits and total debt (including short-term borrowings).
6. Earnings before taxes and interest expenses divided by interest expense (including capitalized interest).
7. Dividends per common share divided by adjusted operating earnings per common share applicable to common shareholders.

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