WOLVERINE TO BHP JANSEN NEW TRANSMISSION LINE PROJECT FALL 2017

Transcription

1 WOLVERINE TO BHP JANSEN NEW TRANSMISSION LINE PROJECT FALL 2017

2 TODAY WE LL TALK ABOUT Our challenges and how we re meeting them Why we re building this project Our planning process and considerations Project schedule What the line will look like, technical requirements How stakeholders can provide feedback Your questions, concerns, and development plans 2

3 ABOUT SASKPOWER OVER 528,000 CUSTOMERS OUR MISSION: Ensuring reliable, sustainable, cost-effective power for our customers and the communities we serve. 3,747 MW NEW PEAK LOAD (2017) ALSO NEW SUMMER PEAK AT 3,470 MW 158,000 KM OF POWER LINES MORE POWER POLES (1.25 M) THAN PEOPLE! 4,491 MW 3 3

4 KEY CHALLENGES & HOW WE LL MEET THEM CHALLENGES Growth: more power needed Rebuild an aging system Significantly reduce emissions Respond to customer desire for self-generation A need for modest rate increases PLANS TO MEET THEM Reduce emissions by 40% from 2005 levels; double renewables Explore cleaner energy options; ways to deliver it Strive for operational efficiencies Help our customers save power, reduce their bills We ll invest about $1 Billion annually for at least the next decade to upgrade and modernize the province s power system. 4 4

5 POTENTIAL GENERATING 2030 SNAPSHOT CAPACITY ADDING ABOUT 2,200 MW TO OUR GENERATION MIX ADDING MORE POWER LINES TO DELIVER ELECTRICITY TO OUR CUSTOMERS 5 5

6 WHY THIS NEW POWER LINE IS NEEDED BHP has requested 230 kv service to its proposed potash mine located about 10 km north of Jansen. A lower voltage line (138 kv) was built in 2010 to provide temporary power to the site until permanent higher voltage (230 kv) service was needed (initially expected by the end of 2014). A change in economic conditions led to the project being postponed; however, BHP has now requested the readiness of the transmission line by late Temporary power line built in 2010 SaskPower is moving forward with the studies and other preliminary work required to have the new power line in service within BHP s desired timeframe. 6

7 ABOUT THE PROJECT 230 kv service will be provided by a new transmission line originating from the Wolverine Switching Station, located in SW W2; The single-circuit line will use steel H-Frame structures; Total length of the new transmission line will be approximately 43 to 47 km (depending on the final route selected); BHP would like the line to be in service in late 2021; and The project cost will depend on final route selection and other factors, however the preliminary estimate is about $33 million. 7

8 PROJECT SCHEDULE Alternative Routes Selection Studies April -August 2017 First Round Stakeholder Consultations November 2017 Preferred Route Selection Studies Nov. - Jan Second Round Stakeholder Consultations Feb. - March 2018 Transmission Line Design Mar April 2019 Environmental & Geotechnical Field Studies April - Oct Submission to Ministry of Environment Jan Acquire Easements Feb. - June 2019 Construction (two winter seasons) Sept Mar Energization Late

9 SELECTING A ROUTE: OUR CRITERIA We conduct a number of critical studies to select a series of preliminary corridors and routes for new power lines. Our assessment includes considerations such as: Minimizing impact on agricultural and other business operations as well as where people live. This involves consultation with elected officials, landowners, Aboriginal and environmental groups, and other stakeholders in the area; Minimizing impact on the natural environment; Building close to existing SaskPower infrastructure and facilities, which minimizes costs. We also look for local economic development opportunities as we plan and build our power projects; and Constructing on favourable topography and foundation conditions and in locations that make it easier for maintenance and construction crews to access- helps to manage costs and maintain service reliability. 9

10 ENVIRONMENTAL CONSIDERATIONS SaskPower s goal is to minimize its impact on our shared environment, which we do by: Complying with all regulatory requirements (Municipal, Provincial and Federal); Consulting with key environmental stakeholders; Avoiding or mitigating impacts to rare and endangered species and their habitats and sensitive landscape features (i.e., sand hills, wetlands, native prairie, heritage resources); Wherever feasible, using existing rights-of-way and previously disturbed areas; and Accommodating local land uses and infrastructure. 10

11 230kV terminal position BHP Jansen Mine Service Wolverine Switching Station (picture taken looking south) 11

12 230kV terminal position BHP Jansen Mine Service Wolverine Switching Station (picture taken looking north) 12

13 13 BHP Jansen Mine Site (picture taken looking east)

14 Easement 20m either side of centreline Routing Along Boundaries (for routes located along quarter-section or section boundary lines) 14

15 300m routing corridor 300m routing corridor Offset from Road allowance (typically 45.7 m or 150 ft) Easement 20m either side of centreline Routing Adjacent to Roads (for routes located adjacent/parallel to roads and highways) 15

16 16 Crossing Jansen Lake (picture taken looking southwest)

17 PREFERRED STRUCTURE 230kV Single-Circuit Galvanized Steel H-Frame Tangent Structure (T73/001) 17

18 STRUCTURE TYPE 230kV Single-Circuit Galvanized Steel H-Frame Tangent Structure (T73/001) Pole Spacing: 8.5m (27.9ft) Structure Height: m ( ft) Average Span: ~300m (985ft) Deflection Structures: Guyanchored 18

19 19 SIZE COMPARISON OF DISTRIBUTION & TRANSMISSION LINES

20 230 KV MINIMUM CLEARANCE OF CONDUCTOR Over Farmland 8.1 metres (26.6 feet) Over Highways metres (27.6 feet) Over High Load Corridors metres (36.9 feet) Over Railways. 9.3 metres (30.5 feet) TYPICAL 230 KV RIGHT-OF-WAY H-Frame Standard Width 40 metres (98 feet) 20

21 ANCHORED STRUCTURES Medium Angle Deflection Structure Heavy Angle Deflection Structure 21

22 RIGHT-OF-WAY PREPARATION Drum-style mulcher used for tree clearing Hydro-axe equipment used for tree clearing 22

23 RIGHT-OF-WAY PREPARATION (CON T) Drum mulcher clearing a right-of-way for a new transmission line Cleared right-of-way ready for construction 23

24 STRUCTURE SETTING Augering Pole Foundation Auguring pole foundation Temporary crane pad leveled for structure setting 24

25 25 STRUCTURE SETTING

26 CONDUCTOR STRINGING Temporary rider poles Conductor on dollies during stringing Helicopter Conductor Stringing Stringing equipment 26

27 OTHER CONSTRUCTION ACTIVITIES Installing ground rods Installing sacrificial anodes Crushed rock backfill Tension (proof) testing anchors 27

28 PRELIMINARY CORRIDOR ALTERNATIVES 28 28

29 TOTAL LENGTH AND LAND USE Potential Route Alternative Total Length (km) Percentage on cultivated land Percentage on legal boundaries JANSEN 1A % 0% JANSEN 1B % 0% JANSEN 2A % 83% JANSEN 2B % 86% JANSEN % 54% JANSEN 4A % 58% JANSEN 4B % 56% JANSEN 5A % 39% JANSEN 5B % 62% 29

30 ENVIRONMENTAL FACTORS Potential Route Alternative Percentage of undisturbed land impacted (ha) Amount of Tree Clearing Required Length of Crossing over Jansen Lake JANSEN 1A 12% m JANSEN 1B 12% m JANSEN 2A 9% m JANSEN 2B 9% m JANSEN 3 10% m JANSEN 4A 8% m JANSEN 4B 8% m JANSEN 5A 10% 3.8 n/a JANSEN 5B 10% 3.7 n/a 30

31 RESIDENTIAL FACTORS* Potential Route Alternative Residences within 60m Residences within m Average Distance to residences (within ½ mile) JANSEN 1A m JANSEN 1B m JANSEN 2A m JANSEN 2B m JANSEN m JANSEN 4A m JANSEN 4B m JANSEN 5A m JANSEN 5B m *as measured from centre line of 300m routing corridor for each potential route alternative. 31

32 ESTIMATED COST Potential Route Alternative Estimated Line Cost (Capital Costs Only) JANSEN 1A +3% JANSEN 1B +2% JANSEN 2A LOWEST COST JANSEN 2B +1% JANSEN 3 +3% JANSEN 4A +4% JANSEN 4B +2% JANSEN 5A +14% JANSEN 5B +11% *percentage premium over lowest estimate cost potential route alternative 32

33 COMMENTS, QUESTIONS AND SUGGESTIONS BY PHONE: IN PERSON: Attend our community open house at The Lanigan Recreation Complex November 7, 2017 Anytime between: Noon and 7:00 p.m. (come-and-go format) Everyone welcome to attend. 33

34 QUESTIONS & DISCUSSION 34