Andrew Drager · juwi Renewable Energy · Australian Energy Storage Conferenece 04/06/15

Technical and commercial challenges/solutions for delivering

large scale solar PV on Australian mine sites

juwi at a Glance

Wind Energy

1,800 MW of installed capacity;

100 wind parks (840 turbines);

$3.4 billion investment volume.

Solar Energy

1,400 MW of installed capacity;

1,500 PV Installations;

$5.3 billion investment volume.

Company

1,000 employees worldwide;

Top 10 largest solar EPC.18 offices worldwide

juwi Presentation – Australian Energy Storage Conference 04/06/2015 - Confidential

juwi Presentation – Australian Energy Storage Conference 04/06/2015 - Confidential 3

Sandfire Project

Degrussa Mine:

Mining: Gold and copper

Location: Doolgunna Region, WA

Customer: Sandfire Resources NL

Distance: 900 km North of Perth

Power Supply:

Diesel Generators: 20MW

Operator: 3rd party power station owner

Avg. load: ~ 11MW

Avg. consumption: ~ 100GWh p.a.

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Sandfire Project

Hybrid Power Plant:

PV-Modules: 10.6 MWp

Tracking: East-West tracking

PV-Inverter: 10 MW

Storage: 4 MW / 1,8 MWh (6 MW peak)

Operator: juwi Australia

Storage tasks:

Spinning reserve

Ramp rate control

Provide frequency support

Power factor correction

Diesel-off mode

juwi Presentation – Australian Energy Storage Conference 04/06/2015 - Confidential

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Sandfire Project

Commercial:

Solar PV: 21 GWh p.a.

Diesel Savings: 5 million litres p.a.

CO2 Savings: 12,000 tonnes p.a.

Financial:

System Cost: $40m;

PPA term: 6 years;

Financiers: non-recourse debt.

juwi Presentation – Australian Energy Storage Conference 04/06/2015 - Confidential

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Mining:

Challenge:

Perceived technical risks (loss of mine production);

Non-core business drain on time and money;

Cost savings are not material;

Little technical understanding of renewable energy.

juwi Presentation – Australian Energy Storage Conference 04/06/2015 - Confidential

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System Cost:

Challenge:

Substantially more engineering;

Financing a higher risk project;

Additional equipment (battery, inverters etc.);

Installation costs (labor, transport etc.);

Remote operation and maintenance.

juwi Presentation – Australian Energy Storage Conference 04/06/2015 - Confidential

Electricity Cost

PV vs Diesel Cost

TimeToday

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3rd Party Power Station Owner:

Challenge:

Lost revenue due to solar;

Risk of damage and/or higher O&M;

Time resources required;

juwi Presentation – Australian Energy Storage Conference 04/06/2015 - Confidential

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Financing:

Challenge:

Higher risk (potential for a stranded asset);

Availability of non-recourse project finance

Due diligence requirements.

juwi Presentation – Australian Energy Storage Conference 04/06/2015 - Confidential

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Solar PV Production:

Challenge:

Soiling losses in dusty region with heavy equipment;

Solar curtailment due to constrained grid;

Longevity of equipment in harsh conditions.

juwi Presentation – Australian Energy Storage Conference 04/06/2015 - Confidential

Thank You for Your Attention!

Andrew Drager

Managing Directror - Australia-South Pacific

juwi Renewable Energies Pty Ltd

Level 1, 33 Queen St.

Brisbane Qld 4000

Tel. +61 7 3194 5052

Mob. +61 408 729 258

andrew.drager@juwi.com

www.juwi.com