IEEE Power & Energy Magazine - September/October 2021 - 77

How the State of Western Australia
Is Leading in Integration
In 2020, the Western Australia government released the
report " DER Roadmap " to guide DER integration and management
to realize a future where it is integral to a safe, reliable,
and efficient electricity system, and where its full capabilities
can provide benefits and value to all customers.
The Southwest Interconnected System
SWIS is a unique power system serving a small, dispersed population
of approximately 2 million people spread over approximately
250,000 km2 an area larger than the United Kingdom.
It is both geographically isolated and electrically islanded with
no interconnection to the large National Electricity Market that
serves most of Australia's population on the country's south
and east coasts. In SWIS, fewer than 100 power stations serve
1.15 million customer connection points. About 900,000 are in
the Perth metropolitan region. Outside SWIS, there is one other
interconnected grid and 34 isolated microgrids in regional and
remote Western Australia. The Northwest Interconnected System
links Port Hedland, Karratha, and other key towns and
mining centers in the state's Pilbara region (Figure 1).
The SWIS network operator, Western Power, is owned by
the Western Australia state government and acts as the primary
distribution and transmission network service provider.
Western Power is regulated by an independent economic regulator,
which approves prudent and efficient expenditure and
revenue recovery from network customers.
The largest generator and retail energy business, Synergy,
is also state owned and accounts for more than half
of the electricity sold in SWIS. Importantly, almost all residential
customers in SWIS are " noncontestable, " meaning
that they can only purchase electricity from Synergy under
tariffs approved by the state government.
The power system and the wholesale electricity market
are managed and operated by the independent Australian
Energy Market Operator (AEMO). With no interconnection
to other energy markets, arrangements for a unique reserve
capacity mechanism are in place to ensure sufficient capacity
is available during peak demand periods.
SWIS was designed around a small number of transmission-connected,
large-capacity power stations. These include
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september/october 2021
ieeepower & energy magazine
77

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IEEE Power & Energy Magazine - September/October 2021

Table of Contents for the Digital Edition of IEEE Power & Energy Magazine - September/October 2021

Contents
IEEE Power & Energy Magazine - September/October 2021 - Cover1
IEEE Power & Energy Magazine - September/October 2021 - Cover2
IEEE Power & Energy Magazine - September/October 2021 - Contents
IEEE Power & Energy Magazine - September/October 2021 - 2
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IEEE Power & Energy Magazine - September/October 2021 - Cover3
IEEE Power & Energy Magazine - September/October 2021 - Cover4
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