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ESKOM South Africa CSP Augmentation ConferencePE2 – operational experience

August 2013

Puerto Errado 2 Project Overview Project Profile and milestones

Puerto Errado 2 Key data

EPC Contractor Novatec Solar

Net Aperture Area 302,000m²

Turbine 2x 15 MW turbines GE Termodyne

Cooling Air cooled condensers

Solar share 100%

Operating Temperature

Up to 270°C

Operating Pressure Up to 55bar

Peak Thermal Output

150MWth

Peak Electrical Output

30MWel

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Dec 2008: Due Diligence of EBL on PE1

June 2009: Signing Investment Agreement

April 2010: Start of Site Activities

April 2011: Financial Close

April 2012: Completion of Construction

Aug 2012: Start of Operations

June 2013: Final Acceptance Tests

Puerto Errado 2 Milestones

confidential

Use of NOVATEC´s guaranteed performance valuesGuaranteed key performance indicators are used for performance modelling all along the project development chain

GUARANTEED KEY PERFORMANCE INDICATORS

Project Development Solar Field Erection Solar Field Operation

Energy Yield Calculation

Contract

Technical specifications

Technical AcceptanceActual versus guaranteed performance

Availability Monitoring

Performance MonitoringActual versus

target performance

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PE2 performance guarantees

4confidential

• Conversion of Direct Solar Radiation to Net Thermal Energy Output depending on Sun Angle Position

Conversion of Net Thermal Energy in Net Electrical Output

Start up & Restart Times

Average Mirror Cleanliness & Plant Availability

Final Acceptence Tests: Target versus Actual Performance Comparison on 1 minute Time Step Basis over 20 day Tests in 4 Seasons

First FAT 20 Day Test (Summer 13)

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Target versus actual on 23/06/2013

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PE2 Plant Availability 99,8%

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Low HR Requirement

Cleaning Performance

(4000 m² per Hour => 2 MWth)

Very low Water Consumption

(~ 2 Liter per m² an year)

Propietary low cost cleaning machines

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PE 2 Solar Field Cleanliness (monthly average based on daily measurements)

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NOVATEC´s Receiver Designs

Vacuum Tubes are being used in Sections >300°C

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NOVA-1 Receiver SUPERNOVA / DMS Receiver

- confidential -

Primary Reflector Design remains the same for all Receivers

Supernova – Constant high steam temperatures

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Control of Outlet Temperature via Focusing/Defocusing

- confidential -

Constant superheated steam temperature despite Fluctuating DNI

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Fluctuating DNI and stable temperatures - confidential -

Conclusion

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• NOVATEC´s transparent and detailed Performance Guarantees are Key for a successful Aquisiton of Equity and Debt Providers

• Final Acceptance Tests of PE2 so far Proof NOVATEC´s Overperformance

• PE2 Success is a solid Basis for the Market Introduction of NOVATEC´s new Technologies Supernova and DMS

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

Puerto Errado 2, Spain 2012