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Advantages of Wind and Solar Co-location
Steven Nethery | 17th March 2016
Market advantages of co-locating utility scale
wind and solar generation

2. Summary
1. Advantages of Co-location
2. Wind & Solar Projects of Goldwind
3. Generation and Grid Characteristics
4. Sources of Cost Savings from Co-location
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3. Project development
• Use existing environmental studies
• Build on community engagement
• Possible add-on to existing PPA & Finance
• Use existing landowner relationships
Savings achieved by sharing existing infrastructure
• Grid Substation & Switchyard
• Roads
• Buildings
Complimentary generation allows improved
utilisation of connection assets
1. The Advantages of Co-location
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4. 2.1 Gullen Range Wind & Solar Hybrid
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185 MW Total Generation
• 165.5MW wind existing
• 10-12 MW solar planned
30km northwest of Goulburn
Gullen Solar – 30~40 ha
Connection to Transgrid 330kV transmission system

5. 2.2 White Rock Wind & Solar Hybrid
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195MW Total Generation
• 175 MW wind planned
• 20 MW solar planned
35km west of Glen Innes
White Rock Solar - 50ha
Connection to Transgrid 132kV transmission
• 170 MW export capability
Shortlisted for ARENA Tender

6. Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
EnergyYield(GWh)
High wind generation during Winter months at Gullen Range
Wind
Solar
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
EnergyYield(GWh)
High wind generation months align with Summer & Winter months at White Rock
Wind
Solar
3.1 Annual Complimentary Generation
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7. 3.2 Average Time of Day Power Outputs
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Diurnal complimentary generation at WRWF
Gullen Range White Rock
AverageoputputWind((MW)
hour
Wind+Solar Wind Solar
Day
AverageoputputWind((MW)
hour
Wind+Solar Wind Solar
Day

8. WRWF 132kV grid capacity limited by network thermal rating
0
20
40
60
80
100
120
140
160
180
200
0% 20% 40% 60% 80% 100%
White Rock Wind/Solar Hybrid vs. Transmission Limit
Transmission Limit
Wind + 20MW Solar
3.3 Curtailment Analysis of White Rock
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9. 3.4 Curtailment Analysis of Gullen Range
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Gullen Range grid capacity limited by 90 MVA transformer size (1 of 2)
0
20
40
60
80
100
120
140
160
180
200
0% 20% 40% 60% 80% 100%
Gullen Range Wind/Solar Hybrid vs. Transmission Limit
Wind + 11 MW Solar
Transmission Limit

10. Copyright © Goldwind Science & Technology Co., Ltd
4. Sources of Cost Savings from Co-location
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Infrastructure Savings by Sharing:
• Access tracks
• Buildings
• Communications / Scada
• Substation
Grid Connection Savings:
• Stronger shared transmission connection
• Less reactive plant
• Grid negotiation mostly complete
Development Savings
• Existing knowledge
• Developed engagement plans
• Additional benefit for landowners
Stand Alone
66kV
Stand Alone
22kV
Build Wind
then build Solar
Build Wind &
Solar together
Costs
Infrastructure Costs Grid Connection Costs Development Costs

11. Project development
Savings achieved by sharing existing infrastructure
Complimentary generation allows improved utilisation of connection assets
Wind & Solar Hybrids reduce market costs
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Thank You
Steven Nethery
0404 028 296
stevennethery@goldwindaustralia.com