Shepard Energy Centre

Environmental Stewardship

Overview

Nominal 800 MW Natural Gas Combined CycleEarly 2011 Received Regulatory Approval (Alberta Utilities Commission and Alberta Environment and Sustainable Resource Development) Cost: Approximately 1.35 BillionJoint Venture with Capital PowerCurrently under construction COD: Early 2015

4

TechnologyVideoNatural Gas Combined Cycle2 on 1 Mitsubishi 501G gas turbine

Environmental Attributes - Low Air Emissions

GHG – Less that 0.4 tonnes/MWh (less than half of the emissions from Coal)SOx – Virtually noneNOx – Shepard will only emit between 3 ppm and 6 ppmPM – virtually noneMercury – No mercury emissionsWe did extensive air dispersion modeling and Shepard has minimal impact on air quality in the region.

Environmental Attributes - Water Consumption

Plant MW ML/y ML/MW Comment

Keephills 766 16000 20.9 Inefficient

Battle River 663 6019 9.1 More efficient

Shepard 800 3796 4.7 Very efficient due to plant design and uses reclaimed water

Shepard Site Photos – April 2013

Aerial View Looking South

Shepard Site Photos – April 2013

Fiberglass Cooling Tower Showing End Wall And Louver Installation

Shepard Site Photos – April 2013

HRSG #2 Finger Rack Area

Shepard Site Photos – April 2013

Combustion Turbine #1

Shepard Site Photos – April 2013

Low Pressure Steam Turbine Rotor Insertion