Novatec Solar s direct molten salt technology, dispatchable power to perfectly match energy demand in Northern Chile 27 th May 2014 T.

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1 Novatec Solar s direct molten salt technology, dispatchable power to perfectly match energy demand in Northern Chile 27 th May 2014 T. Stetter 1 1

2 Bankable Utility Scale Fresnel Technology 30 MW el Puerto Errado 2 Puerto Errado 2 30 MW el plant 300,000 m 2 solar field World s largest Fresnel plant In operations since October 2012 Performance beyond expectations 2

3 Novatec Solar s Product Portfolio Product Heat transfer fluid Steam Parameter Application Status Nova-1 Water/Steam 310 C / 100 bar Supernova Water/Steam 550 C / 120 bar Industrial Process, EOR ISCC, Solar Augmentation In operation since 2009 In operation since 2011 DMS Molten Salt 550 C / no limits in pressure Dispatchable CSP power plants Commercial offering in mid

4 From Saturated to Superheated Steam Solar Field Design: Primary reflector technology is identical for all applications (Platform technology) Receiver design depending on temperature level of application Medium temperature receiver <310 C (saturated ) High temperature receiver <550 C (superheated or molten salt) 4

5 Direct Molten Salt Demonstrator Collector DMS Demo Loop in Spain View medium temperature solar field PE1 DMS Demo Loop in Spain 5

6 Marginal Electricity Costs (CMg) USD$/MWh Novatec DMS - Competitive at long term price development Hedging against volatility and price peaks 350 La niña 2007/08 La niña 2010/11 La niña 2011/ Declining Gas supply by Argentina SIC (Norte) SING Novatec DMS Year 20+ (Opex Only) 6

7 Conventional CSP Plant Layout based on Synthetic Oil as Heat Transfer Fluid solar field max. 390 C ~375 C turbine Main Characteristics Temperature limitation of thermal oil of 390 C 380 C thermal energy storage ~ 2 heat exchanger required (from thermal oil to molten salt and from molten salt to ) heat exchanger generator High storage volume required due to low temperature difference between cold and hot tank 280 C thermal energy storage condenser Oil cycle Salt cycle Steam cycle 7

8 Novatec Solar s Direct Molten Salt (DMS) Solution solar field max. 550 C turbine 540 C Benefits of Direct Molten Salt Only one heat exchanger ~ thermal energy storage generator 280 C condenser Salt cycle Steam cycle 8

9 Novatec Solar s Direct Molten Salt (DMS) Solution solar field max. 550 C turbine 540 C Benefits of Direct Molten Salt Only one heat exchanger ~ 2.5 times reduction of volume storage tanks Very Low thermal aux energy consumption ~2% thermal energy storage generator 280 C condenser Salt cycle Steam cycle 9

10 Novatec s Direct Molten Salt (DMS) Solution solar field max. 550 C turbine 540 C Benefits of Direct Molten Salt Only one heat exchanger ~ 2.5 times reduction of volume storage tanks Very Low thermal aux energy consumption ~2% thermal energy storage generator Higher thermal to electrical conversion efficiency due to increased heat transfer fluid (HTF) / temperature 280 C condenser Salt cycle Steam cycle 10

11 Novatec Solar s Direct Molten Salt (DMS) Solution solar field max. 550 C turbine 540 C Benefits of Direct Molten Salt Only one heat exchanger ~ 2.5 times reduction of volume storage tanks Very Low thermal aux energy consumption ~2% thermal energy storage generator Higher thermal to electrical conversion efficiency due to increased heat transfer fluid (HTF) / temperature Nominal peak load achievable at day and night 280 C condenser Salt cycle Steam cycle 11

12 Load/Generation in Electricity Grid Novatec DMS - Renewable Pocket Mode Complementary to volatile renewable energy 100% 80% 60% 40% 20% 0% Hour of the day Load SIC Grid [%] Load SING Grid [%] 12

13 Load/Generation in Electricity Grid Novatec DMS - Renewable Pocket Mode Complementary to volatile renewable energy 100% 80% 60% 40% 20% 0% Hour of the day Load SING Grid [%] 13

14 Load/Generation in Electricity Grid Novatec DMS - Renewable Pocket Mode Complementary to volatile renewable energy 100% 80% 60% 40% 20% 0% Hour of the day Yield PV Load SING Grid [%] 14

15 Load/Generation in Electricity Grid Novatec DMS - Renewable Pocket Mode Complementary to volatile renewable energy 100% 80% 60% 40% 20% 0% Hour of the day Yield PV Yield Novatec DMS Load SING Grid [%] 15

16 Conclusion Novatec Solar s DMS technology matches the Chilean power generation demand Novatec Solar s DMS solution has a low technical risk profile due to the combination of well established Fresnel Collector field technology vacuum tube receiver design molten salt as well established storage and heat transfer medium in chemical and CSP industry Novatec Solar s low cost Fresnel Technology combined with the cost efficient DMS storage solution will contribute to Chiles path towards a sustainable energy production. 16

17 Puerto Errado 1, Spain 2009 Liddell solar augmentation, Australia 2012 Puerto Errado 2, Spain