Dawn Hub – Serving Growing Demands Andrea Seguin, Director Business Development & Upstream Regulation

September 11, 2018

North America’s Premier Energy Infrastructure Company • 4th largest

company in Canada

• Operates the longest crude oil transportation system in the North America

• Operates Canada’s largest energy distribution company: Enbridge Gas & Union Gas: serve consumer markets in Ontario, Quebec & New Brunswick and New York

• One of Canada’s largest investors in renewables (wind, solar, hydroelectric, geothermal etc.)

Union Gas

• Major Canadian natural gas storage, transmission and distribution company based in Ontario

• Dawn Storage facility – largest integrated underground storage facility in Canada

• Dawn Parkway take away capacity increased from 6.3 Bcf/d (2015) to 7.5 Bcf/d (2017)

• Dawn Hub, the second most traded hub in North America

• Assets of $8.2 billion, ~1.4 million customers, ~2,300 employees

• An Enbridge company

1.4 Million

Retail Customers

1.2Tcf

Pipeline Throughput

65,390 km / 40,630 mi

Distribution Pipe

278 Bcf

Storage Capacity

4,850 km / 3,015mi

Transmission Pipe

4

The value of Dawn:

Defining liquidity

5

Traditional Paths

DAWN

HUB

Gas flow to Dawn

Traditional paths

6

Traditional Paths

New and Growing Paths

DAWN

HUB

Gas flow to Dawn

New and growing

paths

7

New and Growth Markets

DAWN

HUB

August 29,2018 – Announced 2021/2022 Open Season for firm transportation

2018-2020 PXP

Dawn SERVING Constrained Areas in

Maritimes and U.S. NE

Dawn Parkway demand growth

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Third party pipeline

supply

Increased supply to

Dawn

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Expanding storage to meet market demand

• 278 Bcf – Total Storage

• 120 Bcf total merchant storage

• 5.5 Bcf Peak Day Deliverability

– 3.1 Bcf/d Union Gas

– 2.4 Bcf/d Enbridge Gas Distribution

• Storage Enhancement Projects:

– 2016/17 - 3.2 Bcf incremental

storage space

– 2017/18 - ~0.2 Bcf/d of

incremental deliverability

– Post 2019 – 14 Bcf of incremental

space over 8 year period and

increased deliverability

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Our storage customers 29%

55%

16%

Power Generators

Utilities

Marketers

Top Storage Customers Shell Energy North America

Enbridge Gas Distribution Inc.

Goreway Station Partnership

Yankee Gas Services Company

AltaGas Ltd.

Tenaska Marketing Canada

Energir (formerly Gaz Métro)

Cargill Limited

Portlands Energy Centre L.P.

Koch Canada Energy Services, LP

Tidal Energy Marketing Inc.

Thorold CoGen L.P.

Repsol Energy Canada Ltd.

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Serving local distribution

companies

11

Injections & Withdrawals

Maximum Storage Quality

Number of days of service

Customized gas storage services for

your supply portfolio

12

Storage

Space

Storage Space

Range of Deliverability for Power Generators 10% - 50%

Flexible

Customizable

Serving Natural Gas Fired Power

Generators

12

High Deliverability Storage Services

13

Dawn’s value

Q& A

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