Silent Invisible Predictable Sustainable

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SilentInvisiblePredictableSustainable
CREST ENERGY KAIPARA
Harness energy from coastal marine currents
WWW.CREST-ENERGY.COM
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OBJECTIVES Generate electricity close to
consumer demand Supply Auckland and Northland
with power from marine turbines in the Kaipara
Harbour Produce and assemble turbine components
for local and export markets Evaluate other
sites in New Zealand and Asia-Pacific rim
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Marine Currents High Intensity Energy
SCALED at 1 MW Wind turbine 1 x 55m
diameter
Water is non-compressible and 832 times denser
than air

Solar array 70m x 70m
Marine turbines 22 m diameter
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• Tidal volume Eight billion cubic meters daily
• Currents 2.1 to 2.4 meters per second

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LUNAR ENERGY/ROTECH MARINE TURBINE
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Pouto Peninsula
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Why DC cable transmission?

• Cook Straight electrical transmission uses DC
  cables (1961)
• Two small DC cables versus three large AC cables
  (30 km)
• Cables are armour plated and buried over one
  metre deep into harbour floor
• Power ranges from 0 to 200 MW to 0 in 6.5 hours
• Charging DC cables does not present a limitation,
  by comparison to AC

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DC-AC converter and substation

• Sound-proof building50 x 30 x 10 metres
• Underground cables link indoor converter to
  outdoor substation
• Substation fenced25 x 30 metres
• Transmission via overhead lines to Wellsford and
  Helensville (and/or other options)

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MAUI DOLPHIN Cephalorhynchus hectori maui
Critically endangered (46 to 280
individuals) Agile, communicative, acute vision
and echolocation Confirmed sighting in the
Kaipara Harbour
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Produce 200 MW
Install turbines
Secure capital
Process consents
Consent applications lodged
Crest Energy founded
Consultation started
Developed concept
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ADVANTAGES OF MARINE CURRENT POWER GENERATION

• Large capacity for producing power
• Predictable energy resource
• Sustainable and renewable energy
• Minimal noise
• No visual impact
• Low greenhouse gas emissions

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Ma te kotahitanga e whai kaha ai tãtau