MUSKRAT FALLS PROJECT OVERVIEW
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1 CIMFP Exhibit P Page 1 MUSKRAT FALLS PROJECT OVERVIEW Stan Marshall, Nalcor CEO Presentation to MF Public Inquiry September 19, 2018
2 AGENDA CIMFP Exhibit P Page 2 Electrical System Basics Churchill River System Muskrat Falls Project Overview Generation Project Transmission Projects Optimizing NL Energy Resources 2
3 ELECTRICITY TERMS CIMFP Exhibit P Page 3 Common Units Prefix Number Voltage (Volts) Power (Watts) Energy (Wh) (Watts x hours) 1 Kilo 1,000 kv kw kwh Mega 1,000,000 MW MWh Giga 1,000,000,000 GW GWh Tera 1,000,000,000,000 TWh 3
4 NL ELECTRICAL SYSTEM CIMFP Exhibit P Page 4 NL has a winter peaking electrical system Highest or peak load is in the winter The system is sized to meet the winter peak In summer, less energy and capacity are required 4
5 NL HYDRO S SYSTEM CIMFP Exhibit P Page 5 5
6 TRANSMISSION CIMFP Exhibit P Page 6 There are two types of transmission lines built for the Muskrat Falls Project - High Voltage alternating current (HVac) and High Voltage direct current (HVdc) HVac ac power is an electric current that periodically reverses direction. ac power is typically the form of power delivered to households and businesses HVdc dc power is an electric current that flows only in one direction. dc is used to transport power over long distances. dc power has to be converted to ac power before it can be used by homes and businesses 6
7 TRANSMISSION LINE PHASES CIMFP Exhibit P Page 7 7
8 AGENDA CIMFP Exhibit P Page 8 Electrical System Basics Churchill River System Muskrat Falls Project Overview Generation Project Transmission Projects Optimizing NL Energy Resources 8
9 CIMFP Exhibit P Page 9 MAP OF CHURCHILL RIVER
10 CIMFP Exhibit P Page 10 ELEVATION LEVELS OF HYDRO FACILITIES CHURCHILL FALLS GULL ISLAND MUSKRAT FALLS Capacity 5,428 MW 2,250 MW 824 MW Average Annual Energy 34 TWh 11.9 TWh 4.8 TWh Gross Head 321 M 86 M 36 M Mean Annual Flow 1390 m 3 /s 1780 m 3 /s 1840 m 3 /s
11 AGENDA CIMFP Exhibit P Page 11 Electrical System Basics Churchill River System Muskrat Falls Project Overview Generation Project Transmission Projects Optimizing NL Energy Resources 11
12 CIMFP Exhibit P Page 12
13 MAIN PROJECT COMPONENTS CIMFP Exhibit P Page MW hydro development at Muskrat Falls, Labrador (Muskrat Falls Generation) Two parallel 315 kilovolt (kv) HVac transmission lines run 250 km between Muskrat Falls and Churchill Falls (Labrador Transmission Assets) 1,100 km, 350 kv 900 MW HVdc transmission line between Muskrat Falls and Soldiers Pond (Labrador- Island Transmission Link) 13
14 MUSKRAT FALLS GENERATION CIMFP Exhibit P Page MW (capacity) 4.9 terawatt hours per year (energy) Major components: 3 main dams North Spur Dam North Dam South Dam Powerhouse Spillway 14
15 CIMFP Exhibit P Page 15 LABRADOR TRANSMISSION ASSETS (LTA) Two 250 km 315 kilovolt lines from Churchill Falls to Muskrat Falls Major components: HVac transmission line HVac sites at Churchill Falls and Muskrat Falls 15
16 CIMFP Exhibit P Page 16 LABRADOR-ISLAND TRANSMISSION LINK (LIL) 1,100 km line from Muskrat Falls to Soldiers Pond 30 km across the Strait of Belle Isle Major components: HVdc transmission line Converter Stations at Muskrat Falls and Soldiers Pond Grounding Stations and Transition Compounds 16
17 MARITIME LINK (EMERA) CIMFP Exhibit P Page 17 Constructed, owned and operated by Emera for 35 years 500 MW capacity HVdc 170 km undersea link from Cape Ray, NL to Cape Breton, NS 17
18 AGENDA CIMFP Exhibit P Page 18 Electrical System Basics Churchill River System Muskrat Falls Project Overview Generation Project Transmission Projects Optimizing NL Energy Resources 18
19 CIMFP Exhibit P GENERATION FACILITY LAYOUT 19 Page 19
20 CIMFP Exhibit P Page 20 MUSKRAT FALLS SITE AUGUST
21 VIDEO #1 MUSKRAT FALLS SITE 2013 SITE VIDEO CIMFP Exhibit P Page 21 21
22 CIMFP Exhibit P Page 22 MUSKRAT FALLS SITE AUGUST
23 CIMFP Exhibit P Page 23 VIDEO #2 MUSKRAT FALLS FULL SITE VIDEO 23
24 BULK EXCAVATION CIMFP Exhibit P Page IKC-ONE Earthwork Constructors 24
25 CIMFP Exhibit P SPILLWAY Page 25 Primary function is to pass water that isn t used to generate electricity 5 bays with gates that open and close as needed to control the release of water from the reservoir 40 m tall and 75 m wide Fully operational August 2016 Main Contractors: Astaldi (civil works) Andritz Hydro (supply & install hydro-mechanical equipment) 25
26 CIMFP Exhibit P Page
27 SPILLWAY CONSTRUCTION 2018 began installation of concrete rollways for the 5 Spillway openings Required for Spillway operation once reservoir is impounded to elevation 39 m Main Contractor: Astaldi (civil works) CIMFP Exhibit P Page August 2018 Rollway Installation 27
28 CIMFP Exhibit P Page Rock dam used to divert the river through the Spillway so the North Dam could be built Completed fall 2016 Main Contractor: Barnard Pennecon JV
29 TRANSITION DAMS CIMFP Exhibit P Page 29 Astaldi 29
30 SOUTH DAM CIMFP Exhibit P Page 30 Conventional rock-fill tillcore dam that closes the south part of the reservoir between the south bank and Powerhouse 250 m long with 46.3 m elevation Road at the top of the dam provides access to Intake and Spillway facilities Completed fall 2017 Main Contractor: Barnard Pennecon JV 30
31 CIMFP Exhibit P Page
32 NORTH DAM CIMFP Exhibit P Page 32 Final major civil component required for the creation of the Muskrat Falls reservoir Spans the river from the Spillway to the North Spur ~400 m long; elevation ~39 m 250,000 m 3 of concrete will be used in the dam s construction Work started substantial completion expected at end of 2018 Main Contractor: Barnard Pennecon JV 32
33 CIMFP Exhibit P Page
34 CIMFP Exhibit P Page 34 VIDEO #3 NORTH DAM TIME LAPSE VIDEO 34
35 NORTH SPUR DAM CIMFP Exhibit P Page 35 Construction started in 2015 and was completed in August 2017 Main Contractor: Gilbert NL Contracting Ltd. 35
36 NORTH SPUR DAM CONSTRUCTION CIMFP Exhibit P Page 36 UPSTREAM Regraded slopes Installed cement-bentonite cut-off walls Built protective rock berms along the shoreline DOWNSTREAM Regraded slopes Built protective rock berms along the shoreline Installed drainage and relief wells Installed monitoring equipment 36
37 CIMFP Exhibit P Page 37 37
38 CIMFP Exhibit P Page Upstream Completed Downstream Completed 38
39 VIDEO #4 NORTH SPUR VIDEO CIMFP Exhibit P Page 39 39
40 CIMFP Exhibit P Page 40 Ongoing monitoring of the North Spur dam 40 Piezometers 7 upstream 6 northwest cut-off wall 24 downstream 6 inclinometers 5 downstream 1 upstream 1 flow meter Kettle lake outlet 40
41 CIMFP Exhibit P Page 41 DAM SAFETY FOR MUSKRAT FALLS Monitoring for: Structure movement Water pressure Water flow & seepage Slope, foundation & joint movement Temperature Seismic acceleration 41
42 DEBRIS/ICE/SAFETY BOOM CIMFP Exhibit P Page 42 Serves 3 purposes: prevents an ice dam from forming downstream catches debris (logs) upstream of the facility provides visual warning and promotes self rescue to river users on approach to the facilities Installed fall 2017 Main Contractor: Johnson s Construction (installation) 42
43 ACCOMMODATIONS COMPLEX CIMFP Exhibit P Page 43 Liannu Ltd Partnership (supply/install) Labrador Catering (operations) 43
44 CIMFP Exhibit P Page 44 Houses the four generating units Includes North and South service bays for equipment assembly and maintenance Includes overhead cranes for construction and maintenance of generating units 84 m tall and 78 m wide Structure substantially completed November 2017 Main Contractor: Astaldi 44
45 INTAKE (Upstream) Draws water from the river into the Powerhouse 4 intakes, each with 3 bays 56 m tall and 143 m wide Structure substantially completed November 2017 Main Contractors: Astaldi Andritz Hydro CIMFP Exhibit P Page 45 TAILRACE (Downstream) Water exits from the Powerhouse 4 outlets, each with 2 bays Structure substantially completed November 2017 Main Contractors: Astaldi Andritz Hydro
46 CIMFP Exhibit P Page
47 CIMFP Exhibit P Page
48 CIMFP Exhibit P Page
49 CIMFP Exhibit P Page
50 CIMFP Exhibit P Page 50 VIDEO #5 MUSKRAT FALLS GENERATION FACILITY VIDEO 50
51 INSIDE THE POWERHOUSE CIMFP Exhibit P Page 51 Units 1-4 Sept 2017 Units 4-1 Sept 2018 Main Contractors: Astaldi (civil works) Andritz Hydro (turbine and generators/hydro mechanical) Cahill-Ganotec JV (mechanical & electrical auxiliaries) Groupe LAR Inc. (powerhouse cranes) 51
52 CIMFP Exhibit P Page 52 VIDEO #6 POWERHOUSE TIME LAPSE VIDEO 52
53 UPCOMING WORK 2018 TO 2020 Completion of North Dam 2018 CIMFP Exhibit P Page 53 Continuation of installation of turbine and generators Continuation of Balance of Plant work Completion of Intake and Tailrace gates 2019 Impoundment to ~39 m 2019 Completion of rollways in Spillway 2019 First power Q4 2019; Full power Q
54 CIMFP Exhibit P Page 54 OVERVIEW OF COMMISSIONING SCHEDULE End of 2019: Unit #1 first power followed by (power flowing to grid) 2020: Unit #2 commissioned and ready for operation Unit #3* commissioned and ready for operation Unit #4 commissioned and ready for operation Full power from MF planned for August 2020 Commissioning completed September 2020 *Muskrat Falls power due to Emera under commercial agreements 54
55 VIDEO #7 POWER GENERATION ANIMATION VIDEO CIMFP Exhibit P Page 55 55
56 AGENDA CIMFP Exhibit P Page 56 Electrical System Basics Churchill River System Muskrat Falls Project Overview Generation Project Transmission Projects Optimizing NL Energy Resources 56
57 CIMFP Exhibit P Page 57 TRANSMISSION PROJECT COMPONENTS Labrador Transmission Assets (HVac) two 250 km, 315 kv transmission lines between Muskrat Falls and Churchill Falls AC switchyards and AC equipment at Churchill and Muskrat Falls Labrador-Island Transmission Link (HVdc) 1,100 km, 900 MW line between Muskrat Falls and Soldiers Pond Converter station at Muskrat Falls and Soldiers Pond; switchyard and synchronous condenser at Soldiers Pond Strait of Belle Isle Marine Crossing Transition compounds at Forteau Point and Shoal Cove Grounding stations at L Anse au Diable and Dowden s Point 57
58 LABRADOR TRANSMISSION ASSET Progress Map LTA (August 2018) CIMFP Exhibit P Page kv HVac Substation Churchill Falls Complete OVERALL PROGRESS LTA Asset 99.9% 735 kv HVac Lines Churchill Falls Extension Complete 315 kv HVac Lines Muskrat Falls to Churchill Falls Complete 315 kv HVac Substation Muskrat Falls 99.9% 58
59 LTA TRANSMISSION PROJECT CIMFP Exhibit P Page 59 Transmits power between Churchill Falls and Muskrat Falls Construction started 2013; completed 2017 Energized April 2018 Main Contractors: Johnson s Construction (clearing) Valard (line construction) SA-RA Energy (tower steel) Fabrimet (foundations) Midal Cables (conductor) Seves Canada (insulators) 59
60 CIMFP Exhibit P Page 60 ROW CLEARING/ACCESS CONSTRUCTION 60
61 CIMFP Exhibit P Page 61 TRANSMISSION TOWER CONSTRUCTION FOUNDATION INSTALLATION Grillage foundations consist of steel members buried in the ground and connected to the tower legs to support the tower structure TOWER ASSEMBLY & INSTALLATION 1,262 towers assembled and installed 61
62 CIMFP Exhibit P Page 62 TYPES OF TRANSMISSION TOWERS Tangent (Suspension) Towers - used for straight away or in-line section of the line where there is no turn in the line. Typically guyed with a single mast for support. Self-supported (Dead-end) towers - used on line angle turns. Typically four legs with no guys.
63 CIMFP Exhibit P Page 63 TRANSMISSION TOWER ERECTION/STRINGING 63
64 CIMFP Exhibit P Page 64 VIDEO #8 TRANSMISSION LINE VIDEO 64
65 CIMFP Exhibit P Page 65 CHURCHILL FALLS SWITCHYARDS CF Switchyard Extension 65
66 CIMFP Exhibit P Page 66 CHURCHILL FALLS (NEW SWITCHYARD)
67 CIMFP Exhibit P Page HVac transmission lines connect to the ac switchyard at MF which interconnects with the MF generating facility and LIL Main Contractors: GE Grid 67 Note: Photo taken Oct 2017
68 TRANSMISSION LINK LIL & HVdc Specialties (August 2018) CIMFP Exhibit P Page 68 OVERALL PROGRESS LITL Asset 99.8% 350kV HVdc Converter Station Muskrat Falls 98.4% 350kV HVdc Transmission Line Muskrat Falls to Soldiers Pond Complete 350kV Transition Compounds Forteau Point Complete Shoal Cove Complete Shoreline Grounding Sites L Anse Au Diable Complete Dowden s Pt. Complete 230 kv HVac Switchyard Complete Soldiers Pond Facility 350kV HVdc Converter Station 99% 68
69 LIL CIMFP Exhibit P Page 69 First dc line built in NL Construction started 2013; completed November 2017 Energized spring ,215 towers installed 1,933 (island) & 1,282 (Labrador) ~ 4,000 km of wire installed (2,250 km of transmission wire; 1,750 km of optical ground and electrode wire) Main Contractors: Valard (line construction) Jyoti Americas (tower steel) Locweld (foundations) General Cable & Midal Cables (conductor) Seves Canada (insulators) 69
70 CIMFP Exhibit P Page 70 ROW CLEARING/ACCESS CONSTRUCTION Johnson s Construction C&T Enterprises Springdale Forest Resources Mike Kelly & Sons 70
71 CIMFP Exhibit P Page 71 TRANSMISSION TOWER CONSTRUCTION 71
72 CIMFP Exhibit P Page 72 VIDEO #9 TRANSMISSION TOWER INSTALLATION 72
73 CIMFP Exhibit P Page 73 TRANSMISSION LINE STRINGING 73
74 CIMFP Exhibit P Page 74 VIDEO #10 TRANSMISSION LINE VIDEO 74
75 LIL - HVdc SPECIALITIES CIMFP Exhibit P Page 75 Muskrat Falls site Muskrat Falls: Converter building HVdc switchyard Soldiers Pond: Converter building HVdc switchyard Synchronous condenser Transition compounds at Forteau Point & Shoal Cove Grounding Stations at L Anse au Diable & Dowden s Point 75
76 HVdc - MUSKRAT FALLS CIMFP Exhibit P Page 76 ac power from CF and MF facilities is converted to dc power at the MF Converter Station MF and SP sites are essentially mirror sites, except: MF ac switchyard is housed in a Gas Insulated Switchgear building, and SP has Synchronous Condensers to provide inertia and voltage support for the island system Main Contractors: GE Grid 76
77 HVdc MUSKRAT FALLS CIMFP Exhibit P Page 77 Transformers Converter Building/Valve Hall Transformers provide the electrical connections necessary between the ac and dc systems, and ensure voltage is at the level needed for transmission 7 transformers at MF site ac power passes through the valves and is converted to dc power for delivery across LIL 77
78 CIMFP Exhibit P Page 78 MUSKRAT FALLS TRANSMISSION ENERGIZATION 78
79 HVdc SOLDIERS POND CIMFP Exhibit P Page 79 dc power is received here and converted back to ac power to deliver to customers Site preparation began April 2014 Site is 50 acres in size Main Contractors: GE Power, Bird Heavy Civil (earthworks) 79
80 HVdc SOLDIERS POND CIMFP Exhibit P Page
81 CONVERTER BUILDING/VALVE HALL SOLDIERS POND CIMFP Exhibit P Page Valve Hall is considered the heart of the Converter Building at SP Where dc power passes through and is converted to ac power 81
82 CIMFP Exhibit P Page 82 CONVERTER TRANSFORMERS SOLDIERS POND Transformers provide the electrical connections between the dc and ac systems, and ensure voltage is at the level needed for power distribution 7 transformers were transported from Bay Bulls to Soldiers Pond in spring
83 CIMFP Exhibit P Page 83 SYNCHRONOUS CONDENSER SOLDIERS POND 3 synchronous condensers help maintain stability and reliability on the electricity grid and maintain voltage on the ac system The installation and operation is similar to a large electric motor or generator 83
84 CIMFP Exhibit P Page 84 AC COMPONENTS SOLDIERS POND SP also includes: ac Filter Yard, ac Switchyard, ac Control Building ac filter banks ensure the quality of the power being transmitted into the existing ac network meets industry standards Existing NL Hydro transmission lines connect into the ac Switchyard; once power passes through the yard it is ready for distribution to customers ac Control Building houses the protection and control equipment required for the safe operation of the ac Switchyard 84
85 SOLDIERS POND CIMFP Exhibit P Page 85 85
86 CIMFP Exhibit P Page 86 VIDEO #11 SOLDIERS POND SITE VIDEO 86
87 CIMFP Exhibit P Page 87 HVdc TRANSITION COMPOUNDS Forteau Point Transition compounds located on each side of the Strait of Belle Isle act as the transition point between the subsea cables and overhead dc transmission lines. Main Contractors: GE Grid Pennecon Heavy Civil C&T Enterprises 87
88 CIMFP Exhibit P TRANSITION COMPOUNDS LAND CABLE INSTALLATION 88 Page 88
89 HVdc GROUNDING STATIONS CIMFP Exhibit P Page 89 Dowden s Point L Anse au Diable Two grounding stations - Dowden s Point and L anse au Diable Grounding stations add reliability to the HVdc transmission system They allow the system to continue to supply electricity to customers in the event the transmission system needs repair or maintenance Main Contractors: Bird Heavy Civil Locke s Electrical 89
90 CIMFP Exhibit P Page 90 STRAIT OF BELLE ISLE CABLE CROSSING (SOBI) 30 km marine cable crossing from Forteau, Labrador to Shoal Cove, Newfoundland 3 marine power cables along the seabed (30 km each) Using horizontal directional drilling (HDD) technology, drill rigs bored 3 holes from the shoreline and out under the seabed on both sides of the Strait Cables placed along the sea floor and covered by rock berms to protect against marine traffic and fishing activity Cables follow natural bathymetric lines, below depth of icebergs in the area 90
91 SOBI CIMFP Exhibit P Page 91 Nexans (cable design/install) Tideway (rock quarry/placement) C&T Enterprises (civil work) Direct Horizontal Drilling (HDD) 91
92 SOBI HDD ILLUSTRATION CIMFP Exhibit P Page 92 varies 92
93 CIMFP Exhibit P Page 93 To complete the 6 boreholes, 10 km was drilled through hard rock Each borehole is 375 mm in diameter and ranged from 1.25 to 2 km from the shoreline into water depths of about 75 m 93
94 SOBI MARINE CABLE CIMFP Exhibit P Page 94 94
95 SOBI CABLE JOIN CIMFP Exhibit P Page 95 SOBI Laying of the first cable August 2016 On -August first cable 12, 2016 join the first cable join for SOBI connecting for SOBI entered Labrador to the the water island in the for Strait of Belle Isle. the first time in history Fall final cable laid cables energized
96 SOBI ROCK QUARRY CIMFP Exhibit P Page ,000 tonnes of locally quarried rock was installed over 80 km to create the protective berm over the three subsea cables. 96
97 CIMFP Exhibit P Page 97 ENERGIZATION OF TRANSMISSION ASSETS November Soldiers Pond AC switchyard concluded a staged energization procedure that fully integrated the switchyard into the NL Hydro island system April LTA was energized May testing began on the Labrador portion of LIL as well as the converter station at MF and the Forteau Point transition compound May testing began on the island portion of LIL as well as the converter station at SP and the Shoal Cove transition compound May 31, delivery of power across the transmission line from Churchill Falls to Soldiers Pond at 45 MW 97
98 UPCOMING WORK CIMFP Exhibit P Page 98 Dynamic commissioning ongoing Focus on Protection and Control software development to ensure safe and reliable operation of system 98
99 AGENDA CIMFP Exhibit P Page 99 Electrical System Basics Churchill River System Muskrat Falls Project Overview Generation Project Transmission Projects Optimizing NL Energy Resources 99
100 TRANSMISSION ACCESS CIMFP Exhibit P Page 100 With access through Quebec, and into and through the Maritime Provinces, energy from NL can be sold to external markets in Canada and the United States A portion of the capacity of the Maritime Link will be dedicated to existing commitments to Emera and Nova Scotia Power The remainder of the Maritime Link will be used to export to/import from external markets 100
101 CIMFP Exhibit P Page 101 Thank You
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