Keeyask Generation Project. Public Involvement. Supporting Volume. Environmental Impact Statement
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1 Keeyask Generation Project Environmental Impact Statement Supporting Volume Public Involvement June 212
2 The Manitoba Hydro System and its Operation Harold Surminski Power Supply December 15, 21 Broad Overview of Key components Generation Transmission Water Control System Operation Water Supply Manitoba Load Export markets LWR and CRD 4B-133
3 MH Generating Stations and Control Structures Hydro (4,9 MW) Winnipeg River Grand Rapids Jenpeg Kelsey Laurie River Lower Nelson Lake Winnipeg Regulation Jenpeg Control Churchill River Diversion Notigi Control Missi Control Laurie River Southern Indian Lake Notigi Wuskwatim Grand Rapids HVdc Missi 3-4 Weeks Kelsey Jenpeg Lake Winnipeg Lower Nelson 4-6 Weeks Thermal (5 MW) Selkirk Gas Brandon Coal and GT Brandon Dorsey Winnipeg River Selkirk Wind Power St. Leon Wind Energy LP 63 turbines 99 MW Privately owned P.P.A with MH St. Leon 4B-134
4 Imports Firm Seasonal Diversity Capacity swap 35 MW NSP 15 MW GRE 2% winter season capacity factor Non Firm 75 MW 18 MW Market purchases MISO Ontario Bid curve MH Generation Costs (Fuel and O&M) Source Cost % of Time ITM (since 1/4/25) Hydro $3/MWh 99.7% Coal $25/MWh 65% Wind $6/MWh 41% Gas $4 - $1+/MWh 8% Market Purchases On Peak $3 - $8+/MWh Off Peak $15 - $3+/MWh 4B-135
5 Water Supply Alberta Upper Churchill River Basin Saskatchewan 19 % Manitoba Lower Churchill River Basin Saskatchewan River Basin Montana 2 % Red River Basin North Dakota 22 % Nelson River Local Basin 39 % Winnipeg River Basin % s indicate portion of total hydraulic generation from basin waters South Dakota Minnesota Winnipeg River 1 9 Winnipeg River at Slave Falls GS Total Discharge 5PF Average Flow [cfs] Spillage Jan 1 Feb 1 Mar 1 Apr 1 May 1 Jun 1 Jul 1 Aug 1 Sep 1 Oct 1 Nov 1 Dec 1 4B-136
6 Red River Red River Flow Average Flow [cfs] Jan 1 Feb 1 Mar 1 Apr 1 May 1 Jun 1 Jul 1 Aug 1 Sep 1 Oct 1 Nov 1 Dec 1 Lake Winnipeg Inflow vs. Outflow Averages for Period Flow (1 cfs) Smoothed Average Inflow Daily Average Avg Outflow Jan 1 Feb 1 Mar 1 Apr 1 May 1 Jun 1 Jul 1 Aug 1 Sep 1 Oct 1 Nov 1 Dec 1 4B-137
7 Lake Winnipeg Average elevation in feet % of Storage in Nelson Churchill basin 71 Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Nelson River Water Supply (Inflows) 2 18 Maximum Average cfs Minimum Fiscal Year Ending Churchill River Whole System 4B-138
8 Manitoba Electricity Demand Varies Hourly, Daily and Seasonally Daily Matching With Forebays GWh per day Seasonal Matching With Storage 1 Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Manitoba is Strongly Interconnected 4B-139
9 Interconnections Provide Reliability Emergency response During Maintenance Outages Drought support Economy Use of Capital Generation Expansion Load Diversity System Operations (Sales and Purchases) Reserve Sharing (Reserve Sharing Pools) Efficiency Competitive markets 4 35 Energy Sales/Purchases Depend Upon Water Supply Hydro Purchase Thermal (TWh) Firm Load MB Load Dependable (Minimum Flows) Average (Average Flows) Maximum (Highest Flows) 4B-14
10 Hourly Variation in Generation EXPORT MW Real Time Day Ahead Contracts 15 Manitoba 1 5 Monday Tuesday Wednesday Thursday Friday Saturday Sunday Hourly Market Price Variation Midnight Noon Midnight 4B-141
11 Load Generation 93,8 MW 12, MW 119, MW 131, MW What is MISO? Midwest Independent System Operator Regional Transmission Organization Operates transmission grid on behalf of transmission owners Independent, non discriminatory Ensure all generators have equal access to grid Energy Market Operator MH full market participant External generator 4B-142
12 How is Energy Sold? Buyers / Sellers enter into negotiated fixed price contracts Multi-year, seasonal, monthly Over 9% of electricity Provides price and supply certainty Balance of energy is sold Day Ahead (based upon a forecast) Real Time (based upon actual demand) How do the MISO Balancing Markets Work? Electronic Commodity Market Day Ahead Market Generators offer in, Energy price is determined by most expensive generator used to serve load Market clears and is settled Real Time Market MISO dispatches generation 5 minute prices set by most expensive generator 4B-143
13 MH Day Ahead Offers to MISO for April 4 th 7-8 am Source Nelson 1 Nelson 2 Nelson 3 Nelson 4 Nelson 5 Nelson 6 Nelson 7 Nelson 8 Grand Rapids Brandon Gas Turbines MW US$/MWh MH DA Offers for April 4 th 7-8 am Source Nelson 1 Nelson 2 Nelson 3 Nelson 4 Nelson 5 Nelson 6 Nelson 7 Nelson 8 Grand Rapids Brandon Gas Turbines MW US$/MWh At 5 pm April 3 rd MISO Accepted These Offers from US$55./MWh 4B-144
14 Lower Nelson Provides 9% of Hourly and Daily Matching of Supply to Demand Load in MW Lower Nelson River Other Generation Wuskwatim Sale Wuskwatim Generation Midnight Noon Midnight Lower Nelson Operations Stephen s Lake 1 ft Operating Range 25, MWh provides daily storage Kettle Long Spruce Limestone Long Spruce/Limestone near constant level hourly storage time delays 4B-145
15 Export Prices Vary Seasonally 14% Percent of Average Annual Market Price 12% 1% 8% 6% 4% 2% % Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Lake Winnipeg Is Used to Shift Surplus Energy To Higher Value Months if Possible Lake Winnipeg Regulation Seasonal balancing reservoir 5% increase outflow capability 4 ft storage for power 3,, MWh per foot Shape water supply to power demand Jenpeg controls 85% of the outflow East Channel is uncontrolled N Kiskitto Lake Jenpeg Kiskittogisu Lake 8-Mile Channel Nelson R West Channel Playgreen Lake Playgreen Lake 2-Mile Channel Lake Winnipeg Cross Lake Ominawin Bypass Norway House Nelson R East Channel Warren Landing 4B-146
16 Ominawin Bypass Channel Lake Winnipeg Regulation Modes of Operation Flood Conditions - Regulate for flood control Normal Conditions - Regulate for power system economics Conservation - Outflows are set to ensure energy supply security Extreme Drought - Outflows set by Minister of Water Stewardship 715 feet 4 feet for power purposes 711 feet 4B-147
17 Lake Winnipeg Monthly Average Levels Average Levels Pre-Regulation = Post-Regulation = Overall = < Lake Winnipeg Regulation > feet Lake Winnipeg Regulation Jenpeg Operations LWR Primary Objective: Meet the Downstream Power Demand Lower Nelson (36 MW) Jenpeg (12 MW) LWR Secondary Objective: Efficient Powerhouse Operations at Jenpeg 4B-148
18 Ice Restrictions Still Limit Lake Winnipeg Outflow Capability Churchill River Diversion Water Is Most Useful in Winter Churchill River Diversion 25% of Nelson River flow Southern Indian Lake Stephens L. Split L. Lake Winnipeg 4B-149
19 Southern Indian Lake Water Levels Maximum Licence Level Maximize Winter Drawdown Minimum Licence Level CRD Operation Follows Predictable Seasonal Patterns REGULATORY CONSTRAINTS Water Power Act licences include 25 constraints under which Manitoba Hydro must operate Constraints apply to: Generating Stations Control Structures Reservoirs (Lakes) Rivers Nature of constraints: Minimum and Maximum Elevations Minimum and Maximum Outflows Maximum Outflow Rates of Change 4B-15
20 QUESTIONS? 4B-151
21 The Manitoba Hydro System and its Operation (Summary) Harold Surminski Power Supply February 3, 211 MH Generating Stations and Control Structures Hydro (4,9 MW) Winnipeg River Grand Rapids Jenpeg Kelsey Laurie River Lower Nelson Lake Winnipeg Regulation Jenpeg Control Churchill River Diversion Notigi Control Missi Control Laurie River Southern Indian Lake Notigi Wuskwatim Grand Rapids HVdc Missi 3-4 Weeks Kelsey Jenpeg Lake Winnipeg Lower Nelson 4-6 Weeks Thermal (5 MW) Selkirk Gas Brandon Coal and GT Brandon Dorsey Winnipeg River Selkirk 4B-152
22 Manitoba Electricity Demand Varies Hourly, Daily and Seasonally Daily Matching With Forebays GWh per day Seasonal Matching With Storage 1 Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Hourly Variation in Generation EXPORT MW Real Time Day Ahead Contracts 15 Manitoba 1 5 Monday Tuesday Wednesday Thursday Friday Saturday Sunday 4B-153
23 Lower Nelson Operations Stephen s Lake 1 ft Operating Range 25 GWh provides daily storage Kettle Long Spruce Limestone Long Spruce/Limestone near constant level hourly storage Jenpeg Operations LWR Primary Objective: Meet the Downstream Power Demand Lower Nelson (36 MW) Jenpeg (12 MW) LWR Secondary Objective: Efficient Powerhouse Operations at Jenpeg 4B-154
24 Lake Winnipeg Regulation Seasonal balancing reservoir 5% increase outflow capability 4 ft storage for power 3,, MWh per foot Shape water supply to power demand Jenpeg controls 85% of the outflow East Channel is uncontrolled N Kiskitto Lake Jenpeg Kiskittogisu Lake 8-Mile Channel Nelson R West Channel Playgreen Lake Playgreen Lake 2-Mile Channel Lake Winnipeg Cross Lake Ominawin Bypass Norway House Nelson R East Channel Warren Landing Lake Winnipeg Ice Limits Winter Outflows Ice Elevation Water River Bottom 4B-155
25 Lake Winnipeg Inflow vs. Outflow Averages for Period Flow (1 cfs) Smoothed Average Inflow Daily Average Avg Outflow Jan 1 Feb 1 Mar 1 Apr 1 May 1 Jun 1 Jul 1 Aug 1 Sep 1 Oct 1 Nov 1 Dec 1 Lake Winnipeg Regulation Modes of Operation Flood Conditions - Regulate for flood control Normal Conditions - Regulate for power system economics Conservation - Outflows are set to ensure energy supply security Extreme Drought - Outflows set by Minister of Water Stewardship 715 feet 4 feet for power purposes 711 feet 4B-156
26 Lake Winnipeg Average elevation in feet % of Storage in Nelson Churchill basin 71 Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Nelson River Water Supply (Inflows) 2 18 Maximum Average cfs Minimum Fiscal Year Ending Churchill River Whole System 4B-157
27 Unregulated System Inflows 16% 14% 12% % of Average 1% 8% 6% 4% 2% 21/11 % Fiscal Year Beginning Unregulated System Inflow Fiscal Year 25/6 Flow (Kcfs) Average 1912/13 to 27/8 1 5 Fiscal Year 23/4 Apr May Jun Jul Aug Sep Oct Nov Dec Jan Feb Mar 4B-158
28 Unregulated System Inflow Flow (Kcfs) Unregulated Inflow 25/6 Average Unregulated Inflow Unregulated Inflow 23/4 Apr May Jun Jul Aug Sep Oct Nov Dec Jan Feb Mar Unregulated System Inflow and Regulated Outflow Dashed Lines Regulated Outflow Flow (Kcfs) Unregulated Inflow 25/6 Average Unregulated Inflow Unregulated Inflow 23/4 Apr May Jun Jul Aug Sep Oct Nov Dec Jan Feb Mar 4B-159
29 QUESTIONS? 4B-16
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