blue energy, renewables in the pacific ocean
TRANSCRIPT
BLUE ENERGY, RENEWABLES IN THE PACIFIC OCEAN
WORKSHOP “INCORPORATING THE OCEAN IN NDCS”
6TH MAY 2019 – SUVA – FIJI ISLANDS
ADRIEN LAURANCEAU-MOINEAU
GEOSCIENCE ENERGY AND MARITIME DIVISION
PACIFIC COMMUNITY (SPC)
PACIFIC OCEAN : 46% of Ocean surface
PACIFIC OCEAN : 1 % of Blue Energy
BLUE ENERGY – REVIEW OF EXISTING TECHNOLOGIES
Tidal Energy Wave Energy
Ocean Current Ocean Thermal
TIDAL ENERGY AND OCEAN CURRENT
➢ A highly predictable clean energy source
• Tidal currents are caused by the gravitational forces of the
sun and the moon, and accelerated near constrictions such
as islands or inlets. Not weather dependent !
➢ Water is 800 times denser than air
• Tidal devices capture more energy than their wind
counterpart for the same wind / current speed
AND FOR THE PACIFIC ? Tidal Energy
• Lack of in-countries data collection for potential site mapping (current meter deployment)
• Minimum ocean current speed requirement : 2m/s (6 Knots)
AND FOR THE PACIFIC ? Ocean Current
AND FOR THE PACIFIC ? Tonga Fangauta Lagoon
Case study
AND FOR THE PACIFIC ? Tonga Fangauta Lagoon Case study
Mean current speed : 0.2 m/s
OCEAN THERMAL ENERGY CONVERSTION (OTEC)
• OTEC exploits the difference between deep cold
seawater and warmer surface seawater to
produce energy.
• Technologies target around a 20°C or more
temperature differential between cold and warm
water.
OCEAN THERMAL ENERGY CONVERSTION (OTEC)
OCEAN THERMAL – COOLING SYSTEM
AND FOR THE PACIFIC ?
CASE STUDY : KIRIBATI – TARAWA
• Data Collection done by SPC in 2015 for KRISO (Korean Research institute) – 1MW OTEC
WAVE ENERGY
➢The world's largest untapped source of energy
➢Wave energy technologies capture the movement of
ocean and sea waves and use it to create energy –
usually electricity. The energy created depends on the
speed, height and frequency of the wave
COMPLETE PRE FEASIBILITY STUDY DONE BY SPC IN 2015
AND FOR THE PACIFIC ?
THE CLASSIFICATION OF THE MOST IMPORTANT LOCATIONS FOUND:
33 SITES IN 12 COUNTRIES THAT CORRESPOND TO THE CRITERIA (POPULATION ABOVE 1,000 INHABITANTS, MEAN WAVE POWER ABOVE 7 KW/M AND ELECTRICALGRID CONNECTION).
MEAN ANNUAL ENERGY FLUX:
- PALAU (KOROR) 2 KW/M
- MARSHALL ISLAND (MAJURO)10 KW/M
- FIJI ISLANDS (CORAL COAST)20 KW/M
- COOK ISLANDS (RAROTONGA)50 KW/M
AND FOR THE PACIFIC ?
AND FOR THE PACIFIC ? Cost comparison (based on
Pelamis device)
BLUE OCEAN – CHALLENGES : TECHNOLOGY READINESS LEVELS (TRL)
BLUE OCEAN – A REAL OPPORTUNITY FOR PACIFIC ISLANDS CHALLENGE : LACK OF LAND SPACE !
Betio – Tarawa (Kiribati)
Majuro (RMI)
BLUE OCEAN : OTHER ALTERNATIVE OPTIONS • Offshore wind
• PACIFIC CHALLENGE :
✓ Bathymetry, inner lagoon location?
✓ Cyclone
BLUE OCEAN : OTHER ALTERNATIVE OPTIONS • Offshore wind
BLUE OCEAN : OTHER ALTERNATIVE OPTIONS • Floating Solar
POTENTIAL SITE : TUVALU - FONGAFALE
BLUE ENERGY, RENEWABLES IN THE PACIFIC OCEAN
WORKSHOP “INCORPORATING THE OCEAN IN NDCS”
6TH MAY 2019 – SUVA – FIJI ISLANDS
ADRIEN LAURANCEAU-MOINEAU
GEOSCIENCE ENERGY AND MARITIME DIVISION
PACIFIC COMMUNITY (SPC)
VINAKA !
THANK YOU