Energy Storage at Raglan Mine To Achieve High Penetration of Wind Power

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1 Energy Storage at Raglan Mine To Achieve High Penetration of Wind Power Courtesy of Tugliq Photographer Justin Bulota Courtesy of Tugliq Photographer Justin Bulota Michel Carreau, Ph.D., AHK, December 9, 2015.

2 2 Integrating Mining & Renewable Power (Excellent track record growing) Renewable Power (Wind, Solar, ) is gaining good track record to deliver robust products in various climatic conditions in Remote Locations: Bonaire Island (11 MW wind, 3 MW storage, Max penetration 75%, average load 8 MW) Diavik Mine (9.2 MW wind, Max penetration 56%, average load 25 MW) Raglan Mine (3 MW wind, 600 kw storage, Max penetration 33%; average load 16 MW) The cost of RP is lower than the price of Fossil Fuel and provide price certainty and reduce carbon tax obligation (where applicable). The Renewable Power will play a significant role in the future of the mining industry

3 2015 Hatch Hybrid and Mining Projects (Excellent Track record) 3

4 Other Hatch Recent Hybrid Project in Remote Locations (Comprehensive Experience) 4 Nalcor Feasibility Study - Wind power in Coastal Labrador Villages Ministry of Energy Gabon, Feasibility Study Wind and Solar Power Evaluation in National Parks Enercon-Hydro-Québec, Feasibility Study in Kangiqsualujjuaq Village (Wind Power-Storage Hybrid System) African Barrick, Tanzania, Solar PV Feasibility Study at Bugwazi Mine

5 5 Why Hybrid System and High Penetration High Production Cost in remote location particular in remote villages (25 cents/kwh to 50 cents/kwh, was twice two years ago due to high fuel cost) Carbon Tax to increase significantly (already corresponds to 1 to 3 cents/kwh, could double within 5 years) Cost of Energy Storage to decrease by 50% within 5 to 10 years High Penetration can reduce fossil fuel utilisation by more than 50% and generation significant cost savings.

6 6 High Penetration Challenges Respect Constraint of Operation on genset Operate Genset withing an acceptable range (from 70% to 100% its capacity factor) to prevent internal glazing and carbon buildup and to stay within efficient operation range. Maintain spinning reserves to cope with load changes Maintain Grid stability Maintain Frequency and Voltage within an acceptable range Maintain Harmonics and power factors at acceptable levels Grid is typically robust initially and most remain robust to strong wind power variability Events to Consider: Major Icing events (sudden stop) Turbulent wind (v.g.: during blizzards) Cut-off wind speed (sudden stop) Trip events

7 Meeting High Penetration Requirements Total load = Total production at all times. Maintain sufficient Spinning reserve such production can meet varying loads or Curtail Renewable Power Design with sufficient generation Ramp rates to meet the maximum variations Implement Load shedding if total load not met. Respect the Time to required start a Genset Add Energy Storage to complement: Spinning reserves, Maintain load during the time it takes to start a genset, To minimize variability from renewable powers. Provide additional Reactive Power to maintain Power Factors Smart Controls to dispatch Gensets, Energy Storages and Renewable Powers 7

8 Energy Storage at Glencore Raglan Mine

9 Glencore Raglan Mine 9 Access by plane or by sea Autonomous Micro-Grid Several Electricity Generator burning Diesel 2 nd largest cost center at the mine Mine Raglan Life Time : more than 25 years as of today. Wind Monitoring Campaign started in

10 Wind Power + Energy Storage 10 Enercon 3 MW Wind Power Li-ion Batteries Hydrogen loop + + Hatch-KTSI Flywheel 25kV distribution grid With Hatch Microgrid Controller Diesel power plant and Microgrid 10

11 Energy Storage Systems at Raglan 11 Flywheel and electrical substation Battery system Fuel Cells Electrolyser Courtesy of Tugliq Photographer Justin Bulota Hydrogen storage tanks 11

12 12 Energy Storage Systems at Raglan Flywheel 200 kw 1.4 kwh Smooth fast wind power transient over 25 seconds Li-Ion Battery 200 kw 250 kwh Smooth fast wind power transient or store energy over 75 minutes Hydrogen loop Electrolyser, 200 kw of fuel cells and 4 MWh of Hydrogen storage tanks Store excess wind energy for 20 hours Micro controller - HmGRID High-Speed Controllers dispatching storage components to minimize wind power variation and store excess wind energy 12

13 Storage As backup Power (Battery) 13 Opportunity to stop a Genset of 1.5 MW Backup Power needed the time to restart the Genset

14 Storage Store Excess Energy (Battery and Hydrogen System) 14 Excess Energy (about 300 kw or 7.2 MWh per day)

15 Storage Smooth Power Quality (Battery and Flywheel) 15 Wind Power Dip Wind Power Drop

16 Energy Storage Controller Dispatched 16 16

17 Conclusion 17 Renewable Power can reduce cost of energy in remote mining operations Saving increase as fuel cost increase over the 25 years period and Carbon Tax increases. Low RP power integration up to 20% with smaller integration challenges High Penetration system with Energy Storage can lead to 50+% of Fuel Reduction and Carbon Tax Reduction representing significant saving over 20 years; Significantly Cost Reduction in Energy Storage will be an enabler to achieve profitable high penetration hybrid systems.