Why solar is a good fit for mines: Pampa Elvira Solar project - Codelco

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1 Why solar is a good fit for mines: Pampa Elvira Solar project - Codelco

2 Who we are?

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4 Strong Track Record: Leaders on large scale solar thermal plants development & operation. Over 24 years of experience in more than 10 countries. ISO 9001 & Solar Keymark Certified. More than m 2 installed all over the world.

5 All in one hand : Owns solar panel factory in Vietnam. Annual panel production capacity: m 2 /year. Owns heat transmission duct factory: Pipeteq Systems.

6 Guayacan Power Station 12 MW, run-of-river Operating since 10/2010 Registered on CDM

7 Develop, implement and operate energy projects. Executive team with vast experience in energy projects development and operation. Chilean investors with successful track record on several industries: Owners of largest Coca-Cola s bottler in South America. Investments in Finance industry, Health, Construction, Shopping malls, Telecom, Hotels, Energy, among others.

8 MAIN PROJECTS Solar thermal project: Codelco Gaby (32MWt) Operating Maipo River: Guayacán: 12MW Operating El Canelo: 16MW Developing Water rights: 9MW Developing Bio Bio Basin: San Carlos I 56MW Developing San Carlos II 105MW Developing Cautín Basin: 40 MW + 60 km Tx Lines - Developing Ranco Basin: Los Venados: 20 MW + 60 km Tx Lines - Developing

9 Main copper producer in the world Controls around 10% of the world reserves. More than US$30 billions in assets. In 2012, produced 1.75 million metric tons of refined copper (10% of world production). 8 operations throughout Chile. Gabriela Mistral Division of Codelco bidded for solar heat to EW process.

10 Gabriela Mistral 120 km from nearesty city and 2,660 m.a.s.l metrics tons of copper produced in First operation using only autonomous trucks to haul mineral. Women account for 23% of the staff (Mining industry average: 6%).

11 Gabriela Mistral Very harsh weather conditions Desert conditions. 140 kmh (87 mph) - Swirling winds. Dust. Hails / Snow. Extreme night/day T variations: -15 C / 30 C (5 F / 86 C). Earthquakes. No water.

12 Not any solar technology fits well in mining Fresnel Parabolic Trough Flat plate (Sunmark) Concentration Tower

13 Not any solar technology fits well in mining Technology Sunmark Parabolic Fresnel CAPEX optimal high high OPEX optimal high high Working Pressure low high high Moving Parts no yes yes Operational life over 20 years no track record no track record Storms (wind, dust, hailstones) high resistance limited limited Earthquakes proven resistance not proven not proven Sunmark: simple & robust The best fit for mining

14 Supplying heat to Codelco s EW process

15 Novel business model Pampa Elvira Solar SpA: Thermal Power Purchase Agreement: Ownership, Desig, construction, operation & maintenance by heat supplier. PESolar take care of all risks: operational, technical & solar radiation. Codelco only pays for the energy used in the process (with a ToP) with interesting savings on Diesel alternative

16 Thermal Power Purchase Agreement: Agreement on minimum monthly amount of solar energy delivered. We operate and maintain heaters as backup as well as Heat Exchangers 24/7 heat supply. Covenants on heat supply quality (Electrolyte Temperature) and safety. Contract length: 10 years. Stable energy tariff US$/MWh + Fixed charge heaters O&M.

17 Pampa Elvira Solar project Gabriela Mistral, Codelco. World largest thermal solar plant Installation & performance data Collectors area : m m panels. Annual production: MWht. Share in annual heat demand: 85%. Solar Thermal Battery: m. Key figures Diesel savings: ton/year truck travels/year. Reducción CO e: ton/year. Start-up: August

18 How Pampa Elvira Solar works Solar Thermal Battery

19 High capacity factor Our technology Absorbs direct & difuse radiation. High resistance to dust & corrosive environments. Resists strong winds, hails & snow. Earthquake proof (tested). Lifetime > 20 years. Easy to clean. 99% recyclable.

20 Normal operation

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22 Dust

23 Production & Effiency ,3 MWh 60,47 % Solar production MWh Effiency %

24 Storage

25 Main supply, the 13th of September

26 Implementing the solar plant

27 Preparing the land

28 Piping installation

29 Piping installation 29

30 Piping installation 30

31 Placing concrete blocks

32 Placing concrete blocks

33 Placing concrete blocks

34 Placing concrete blocks

35 Mounting the panels

36 Mounting the panels

37 Mounting the panels 37

38 Building the heat exchangers room

39 Building the heat exchangers room

40 Building the heat exchangers room

41 Building the heat exchangers room

42 Building the heat exchangers room

43 Building the thermal battery

44 Building the thermal battery 44

45 Building the thermal battery

46 Building the thermal battery

47 Building the thermal battery

48 Building the thermal battery

49 The solar plant is ready and

50 How it looks like from the air

51 Logistics & design = attractive pricing Detailed design. All in one hand no intermediaries. Strong knowledge in thermo dynamics & mining processes. Ahead planning & detailed control during construction. Supervising and plant control 24/7. Proprietary control software.

52 Key lessons Stringent working conditions in Mining industry. Safety procedures. Medical tests. Not any technology fits well in mining environments. Very harsh weather conditions. Simple and robust technology is needed.

53 Key lessons Need of a knowledgeable & experienced team in mining & energy industry. Best technology, detailed planning & control are key to succeed.

54 Supervising and plant control Thanks for your attention! 24/7 online support control SUNMARK