PEACE REGIONELECTRICITY SUPPLYCHARLES YOUNGPRES PROJECT MANAGER

LESLEY WOODPRES STAKEHOLDER ENGAGEMENT

July 2015

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CONTENTS

INTRODUCTION

ALTERNATIVES

SCHEDULE

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PROJECT PURPOSE

PEACE REGION ELECTRICAL SUPPLY (PRES) PROJECT: INTRODUCTION

To reliably meet the large growth in electricity demand in theDawson/Groundbirch area

• Growth is mainly due to the boom in unconventional gas production, andcompanies wishing to power their facilities from the BC Hydro grid

• This has resulted in some of the most dramatic single-industry regionalload growth BC Hydro has seen in the last 50 years

• Dawson Creek/Chetwynd Area Transmission (DCAT) project (underconstruction) will double capacity in the area (provides new largetransmission lines to resolve “downstream” constraint)

• The planned PRES transmission lines will bring more electricity to theDCAT line (resolves “upstream” constraint)

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PRES PROJECT STATUS

PEACE REGION ELECTRICAL SUPPLY (PRES) PROJECT: INTRODUCTION

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BC Hydro is still evaluating PRES Project alternatives

• There are now five main alternatives, each with route and/or designconfiguration options

• We are continuing desktop technical, environmental, archaeological andcost estimating studies on alternatives we’ve presented to you previously

• Through consultation with First Nations and further feasibility research,BC Hydro recently identified two new alternatives, which are now beingstudied

• We expect to identify a leading alternative in Fall 2015

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DESIGN DEPENDS ON LOADPEACE REGION ELECTRICAL SUPPLY (PRES) PROJECT: ALTERNATIVES

OR

One newwood-pole

line

Two newwood-pole

lines

One newd/c steel

lattice line

Existingline

remains

Existingline

rebuilt

To provide up to 650 MW to the area requires one newtransmission line:

• Install one new single circuit 230 kV transmission lineon wood-pole H frame

• Rebuild existing line from GMS to SLS via SNK withheavier conductor on new, taller structures

To provide up to 850 MW to the area requires two newtransmission lines:

• Install new double circuit 230 kV on steel lattice ortwo new single circuit 230 kV lines on wood-pole Hframes; no change to existing line

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ALTERNATIVE 1230 KV TRANSMISSION LINE(S) FROM GMS TO SLS VIA SNK

PEACE REGION ELECTRICAL SUPPLY (PRES) PROJECT: ALTERNATIVES

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Alternative 1-1

• One 230 kV wood pole circuit, 105 km,parallel existing circuit as much aspossible

• Rebuild existing line; some substationupgrades

Alternative 1-2

• Double circuit 230 kV line or two woodpole 230 kV lines; same length, route

• No change to existing line; somesubstation upgrades

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ALTERNATIVE 2A230 KV TRANSMISSION LINE(S) FROM GMS TO SLS, VIA DKT

PEACE REGION ELECTRICAL SUPPLY (PRES) PROJECT: ALTERNATIVES

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Alternative 2a-1

• One 230 kV wood pole circuit, 85 km;15 km would not parallel existing circuit;rest would parallel as much as possible

• Rebuild existing line; some substationupgrades

Alternative 2a-2

• Double circuit 230 kV line or two woodpole 230 kV lines; same length, route

• No change to existing line; somesubstation upgrades

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Alternative 3a-1 -- orange• New 500/230 kV DKT500 Substation,

connected to existing 500 kV line southof GMS

• One 230 kV line, approx. 84 km long;most would parallel existing lines

• Rebuild existing line; some substationupgrades

Alternative 3a-2 – orange• New DKT500 Substation, with double

circuit 230 kV line or two wood pole 230kV lines; same length, route

PEACE REGION ELECTRICAL SUPPLY (PRES): ALTERNATIVES

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ALTERNATIVE 3A: 230 KV LINE(S) FROM DKT500 TO SLS, VIA SNK

• No change to existing line; some substation upgrades

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Alternative 3b-2 -- blue

• New DKT500 Substation

• Double circuit lattice or two newwood pole single circuit 230 kVtransmission lines; approx. 64 kmlong, paralleling existing line wherepossible

• No changes to existing line; SLSupgrades required

PEACE REGION ELECTRICAL SUPPLY (PRES): ALTERNATIVES

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ALTERNATIVE 3B:230 KV TRANSMISSION LINES FROM DKT500 TO SLS, NORTH OF SNK

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ALTERNATIVE 4230 KV TRANSMISSION LINES FROM PIV TO SLS

PEACE REGION ELECTRICAL SUPPLY (PRES) PROJECT: ALTERNATIVES

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Alternative 4a-2 -- green

• New 500/230 kV Pine Valley (PIV)Substation, connected to existing 500 kVtransmission line

• Double circuit 230 kV or two new wood-pole single circuit 230 kV transmissionlines, approx. 84 km (PIV to SLS viaSNK), paralleling existing where possible

• Upgrade SLS; no change to existing line

Alternative 4b-2 -- yellow

• Similar, except route north of SNK; shorter (approx. 48 km long); all newright-of-way needed

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ALTERNATIVE 5230 KV TRANSMISSION LINES FROM FUTURE SITE C SUBSTATION TO SGB

PEACE REGION ELECTRICAL SUPPLY (PRES) PROJECT: ALTERNATIVES

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Alternative 5a-2 -- red

• Double circuit lattice or two new woodpole single circuit 230 kV transmissionlines; approx. 55 km long

• Upgrades to SGB

Alternative 5b-2 -- brown

• Similar, but parallels an existing line for2.5 km and crosses Pine River at adifferent location

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EVALUATING ALTERNATIVESTo identify the leading alternative, BC Hydro will consider the following:

• Technical issues (capacity, reliability, constructability)

• Potential environmental impacts

• Potential archaeological impacts

• First Nations input

• Stakeholder input

• Cost

• Schedule

• Safety

PEACE REGION ELECTRICAL SUPPLY (PRES): ALTERNATIVES

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TENTATIVE SCHEDULE (ALL DATES SUBJECT TO CHANGE)

PEACE REGION ELECTRICAL SUPPLY (PRES) PROJECT: SCHEDULE

EvaluateAlternatives

Identifyleadingalternative

(late Fall 2015)

Project definition(Additional studies)

Construction

In Service

Fall 2013 Spring 2016 2018 2021-2023

We arehere

QUESTIONS & DISCUSSION

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FOR MORE INFORMATIONLESLEY WOOD604 623 4128lesley.wood@bchydro.com

OR VISIT: www.bchydro.com/pres

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