IPS Connect 2017

WESTERN AUSTRALIA’S NUMBER 1 ISLAND TOURISM DESTINATION

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As a Nature Reserve:

✓ happy and healthy visitors✓ Protect our landscapes/ wildlife/ and wealth of culture and

heritage✓ Mindful of our land use

✓ To visit the Island – needs to be equitable & fair

✓ Effective management of resources is critical to short and long term sustainability as a self funded tourism destination

✓ Rottnest Island is an Isolated Community Reliant upon own resources for provision of essential services.

Principal Areas of Management:

Management of the Island –RIMP 2014-2019

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Energy Review & Roadmap Conducted by Hydro Tasmania in 2014

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▪ Asset condition

▪ System performance

▪ Energy Use

▪ Energy efficiency & renewable energy

▪ opportunities

▪ Solar – abundant resource

▪ Wind – favourable resource

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Need for a Power Generation upgrade:

➢ Power system operation was a significant cost to Rottnest Island Authority

•Subsidies provided to island customers

•Renewable energy (RE) is cost effective and fits the island’s brand

•Existing wind turbine saves around 30% of expensive polluting diesel

•ARENA funding was available to help develop innovative RE projects

•Hydro Tasmania had the expertise in island power systems and was able to apply for ARENA funding

✓ 3-way collaboration between ARENA, Rottnest Island Authority and Hydro Tasmania to develop the project

Project Funding:

▪ The project - Water Renewable Energy Nexus (WREN) attracted significant grant funding from ARENA

▪ ARENA is the federal government agency providing grants for innovative renewable energy projects

▪ WREN competed for ARENA grant funding on the basis of:

– Unique and innovative nature of project scope

– Addresses energy use for water supply in remote areas

– Opportunity to use project technology elsewhere

– Knowledge share obligation

– Highly credible delivery team (Hydro Tasmania previous ARENA project success)

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Rottnest Island – Power Overview Prior to WREN

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▪ 2.1MW diesel system ▪ 7x 300kW units ▪ 600kW wind turbine (30%) ▪ 1 ML of diesel / $1.5m p.a

Rottnest Island – Power Overview Now with WREN

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600kW600kW

2,040kW

Operated to makeuse of renewable energy.

Where surplus energy is converted to reserve.

Rottnest Island Water Renewable Energy Nexus

• 45% renewable energy (RE) contribution

• 95% instantaneous RE

• Integrates Water Desalination as Energy Storage

• New Hybrid Control & Diesel Control

• Extensive Training

• Operator Remote Interface

• Education App

Rottnest Island – Solar Array

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• 600 kW DC Solar PV Array

• Direct fibre fast acting control link to power station

• Site selection

• Away from main tourist attractions

Rottnest Island – Control upgrade and dynamic resistor

▪ Industry standards PLC based modular system

▪ Complete control system upgrade (diesels, LLD, feeders, solar, wind, resistor & DSM)

▪ Manages the variability in renewable generation, improves system security

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Rottnest Island – Desalinisation control

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▪ Water on Rottnest Island is desalinated = major use of energy

▪ Timing of desalinisation isn’t critical (as long as we have water)

▪ Desalinate at time of high renewable energy availability

▪ Use water as a battery!

▪ Control has been automated

▪ Greater savings from better use of RE

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Real time remote operator toolsremote annunciator and Phone App ?

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Real time remote operator toolsremote annunciator and Phone App ?

How is it working? (24/8/17)

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~ 5pm ~ 7pm

~ 9pm ~ 11pm

How does WREN perform?

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Knowledge Sharing

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Energy Roadmap: Increase RE - Reduce cost

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Future Potential: •Additional renewables (wind, solar) •Additional enabling technologies (batteries, flywheels, LLD)

Flinders Island Hybrid Energy Hub

▪ HT EPC

▪ Modular Solution

▪ Test off site

▪ Strong Community Engagement

▪ Whole of system Hybrid Control Upgrade

▪ Undergoing Final Commissioning

▪ 100% RE Penetration

▪ 60% RE Contribution

Coober Pedy Renewable Hybrid Project

▪ HT Design, Owners Eng, Supply of

▪ D-UPS, Dynamic Resistor, LV-HV Switchgear, Hybrid Control to EDL

▪ 70% RE Contribution target

▪ 100% Penetration

▪ Hybrid Control ‘talks to’ Existing Diesel Control

▪ Multiple Party Interfacing – Physical and Control

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