MINING: Profitable Experiences with Renewable Energies.

MINING: Profitable Experiences with Renewable Energies.

ISSUE: Energy Cost is a very substantial portion of the operation cost of a Mine. SOLUTION: Intelligent integration of RE renewable energy can address both energy cost and carbon footprint for mines. Slide 2

Hybrid Solutions for Mining: Concept. To provide power & energy in areas which do not have access to electricity from the national grid, hybrid solutions are based on harnessing renewable energy resources available in a specific area. These range from wind to solar and hydro energy, that are supported for night operation or not proper weather conditions with a diesel unit making a hybrid solution. Slide 3

Hybrid Solutions for Mining: Example (AU). Set Up: Diesel (4 x 320kW) PV (1 x 500kW) Flywheel (1x500kW) 60% Penetration of RE Benefits: Saving of Diesel 405,000 liters per year 1,100 TM CO2 saving per year Slide 4

Hybrid Solutions: Engineering & Technologies. PV Photovoltaic Power Technology. Turnkey Solutions ( EPC ) with 1000 or 100 V. Silicon or Thin Film. Fix, 1 Axis or 2 Axis. Concentrating Solar Power Technology ( Linear Fresnel ). Turnkey Solutions ( EBoP ) with oil, salt or vapour. Generation Electricity and/or Vapour. Battery Storage Power Technology. Storage option for all solar technologies. Turnkey solution. Stabilization System 4 Net Flywheel - reserve for peak demand and load fluctuation. Turnkey solution. Micro-grids and Hybrid Power Technology. Turnkey QG solutions for: Wind + PV + Fly wheel Biomass + PV + Fly wheel Pumping storage + PV + Diesel. Slide 5

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Hybrid Solutions: Typical Configuration. It is often desirable to design a system with additional source of power. The most common type of hybrid system contains a gas or diesel powered engine generator, being another hybrid approach is a PV/Wind system or hydro-pumping /Solar. Adding a wind or reverse pumping turbine to a PV system provides complementary power generation. A hybrid remote power system integrates two or more power sources, using intelligent controls to manage the system operation. Inherently reliable due to multiple power sources. PV Hybrid systems generally use gas/diesel generating set-capable of providing full rated power on demand as the second energy source Stabilization to grid connection can be provided in order to avoid voltage perturbances by means of power-store solutions who covers the oscillations of renewable energy It secures 24 hours operation despite of the strength of the MV line Slide 7

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Mining Experience Acquired in ZA, CL, PE & AU. Mining Challenges: Renewable Energy strengths: Location has normally weak local Renewable energy independent from grid infrastructure. local infrastructure. Potential shortcomings and Renewable sources independent from bottlenecks. fuel prices fluctuations, strikes Fairly limited engineering and Standard engineering and electrical electrical skills available. skills already available because of Mining capacity increase mining requirements. continuously. 1 MWp scalable and modular Fast time response expanding the Fast erection time (1 month ENG, 1,5 capacity months SCM, 4 month erection 10 High availability (redundant MWp) systems) Redundancy with other conventional Slide 9 energies.

Mining Grid Connected Example -. 1.200,00 1.000,00 800,00 600,00 400,00 PV Produc5on Grid demand Mine grid depending PV production 8:00 to 16:00 h o Solar PV covers 33% of daily demand (75% of the maximum power demand spectrum). o Linear grid demand can be done using alternative storage capacities. ( batteries, hydraulic ) 200,00 0,00 0,13 0,86 1,58 2,31 3,03 3,76 4,48 5,21 5,93 6,66 7,38 8,11 8,83 9,56 10,28 11,01 11,73 12,46 13,18 13,91 14,63 15,36 16,08 16,81 17,53 18,26 18,98 19,71 20,43 21,16 21,88 22,61 23,33 Grid overloaded in high demand hourly spectrum. Storage optimize the grid demand. 1.200,00 Pv Produc5on Grid demand E. Storage Storage used Mine demand 1.000,00 800,00 600,00 400,00 200,00 o PV + Storage ( hydraulic ) from 08:00 to 21:00 h Solar PV covers 33% of daily demand (75% of the maximum power demand spectrum) o Hydro / batteries covers 20,8% of daily demand (25% of the pending maximum demand power spectrum) 0,00 0,13 0,86 1,58 2,31 3,03 3,76 4,48 5,21 5,93 6,66 7,38 8,11 8,83 9,56 10,28 11,01 11,73 12,46 13,18 13,91 14,63 15,36 16,08 16,81 17,53 18,26 18,98 19,71 20,43 21,16 21,88 22,61 23,33 o Solar generation and motor peak demand fluctuation must be compensated (Fly wheel, 18 Mws block ) Slide 10

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Solution Definition Feasibility Mining Solution. Optimal Generation solution combination. Permitting. Financing Analysis. Full EPC without financing. Equity provider & Project Finance. PPA - Power Purchase Agreement. Installation. O&M Installation & Commissioning. Operation & Maintenance. Slide 12

Renewable Energy & Water Desalinization. Quantum Group will dimension PV plant to cover the desalinization plant power demand, as well as pumping energy for distribution through the network. Slide 13

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USA 4 PV plants, 171 MW 2 Industrial plants 1 Thermal Solar plants Canada 8 PV plants, 220 MW Mexico 1 PV plant, 2,1 MW 2 Industrial plants 5 Fossil Power plants 1 Wind farm, 200MW Honduras 1 PV plant, 50 MW Colombia 2 Fossil Power plants 1 Water plant Brazil 2 Industrial plants Chile 6 PV plants, 102 MW 2 Fossil Power plants Argentina 3 Industrial plants 1 Fossil Power plants Spain 3 PV plants, 20 MW 30 Fossil Power plants 20 Thermal Solar plants 25 Water plants 45 Irrigation plant 4 Desalinization Plants 2 Pumping stations 10 Water distribution networks 4 National wide SCADA 10 Industrial plants 3 Wind Plants France 4 PV plants, 19 MW 2 Industrial plants United Kingdom 3 PV plants, 9 MW Italy 29 PV plants, 158 MW 4 Fossil power plants Romania 1 PV plant, 8 MW Bulgaria 7 PV plants, 85 MW Algeria 1 PV plant, 2 MW Morocco 2 Industrial plants Turkey 1 Irrigation plant 1 Pumping station Israel 2 PV plants, 7 MW 1 Desalinization Plant Saudi Arabia 2 Industrial plants Egypt 1 Fossil Power plant South Africa 9 PV plants, 210 MW 2 Industrial Slide plants 15 Japan >100 projects, 300 MW China 2 PV plants, 50 MW India 28 PV plants, 516 MW Uzbekistan 1 Fossil Power plants Bangladesh 1 Fossil Power plants Thailand 2 PV plants, 55 MW Australia 2 PV plants, 7 MW

CAPITAL & ENGINEERING FOR RENEWABLE APPLIED ENERGY. For further information contact with: Ruy Campos Dugone E: ruy.cd@quantum.group T: +54 11 5368 5810 Sergio Asenjo E: sergio.asenjo@quantumpow.com M: +34 629 88 35 81 Gustavo Caldelas E: gcaldelas@grupoagv.com.ar M: +54 9 3875 87 8269 Diego Pestaña E: dpestana@grupoagv.com.ar T: +54 387 428 4455 Slide 16