Independent Review into the Future Security of the National Electricity Market Preliminary Report, Dec 2016 (docx 04 mb)
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Executive SummaryThe National Electricity Market (NEM) is the longest geographically connected power system in the world, supplying the states and territories of eastern and southern Australia – Queensland, New South Wales, the Australian Capital Territory, Victoria, South Australia and Tasmania. It generates around 200 terawatt hours of electricity annually, accounting for around 80 per cent of Australia’s electricity consumption. It was designed for a world that was less complex than today, in which traditional generation (coal, gas and hydro) provided all of our electricity needs. Since then, the parameters have changed. New technologies are emerging more rapidly than previously envisaged. Variable renewable electricity generation1, particularly wind and solar photovoltaic (PV), is increasing. Concurrently, demand for electricity from the NEM has declined, driven by increasing energy productivity, improving energy efficiency, increasingly distributed self-generation, and a decline in industrial consumption. Industrial, commercial and residential consumers are helping to drive the transformation. They are embracing new technologies to better manage their electricity bills and reduce our emissions. At the same time, they are rightly concerned that the security of the NEM is less assured than when it was designed. Retail prices for all three categories of consumers have also increased substantially in the last decade. These changes are occurring as we transition to a lower emissions economy. As Australia’s largest single source of emissions, the electricity sector itself understands that it has an important role in meeting our national emissions reduction target. We now have a once-in-a-generation opportunity to reform the NEM, to make it more resilient to the challenges of change, and to enable the new and better services Australians want. Recent events in South Australia and the announced closure of Hazelwood Power Station in Victoria have underscored the urgency of this task. The shift from coal-fired generators to wind and solar PV generators has implications for security and reliability. These variable renewable electricity generators do not inherently provide usable inertia to support power system security. They are also much less able to contribute to other ancillary services required to maintain a secure and reliable supply of power. Fortunately, solutions are available to effectively integrate variable renewable electricity generators into the electricity grid, but we will have to change the way we operate. Such solutions include intelligent wind turbine controllers, batteries and synchronous condensers, all of which can contribute to system security. But the NEM does not currently encourage their adoption. Emerging markets for ancillary services, required to maintain system security, have not kept pace with the transition. New and updated frameworks, technical standards and rules may be required. Open cycle gas-fired generators are well-placed to complement variable renewable electricity generators. However, Australia’s east coast gas market has undergone profound change with the expansion of our liquefied natural gas export industry. Domestic gas prices have risen considerably as Australian gas markets have become linked to international markets and supply has been tight. The need for greater gas supplies for electricity generation is increasingly urgent. Transmission infrastructure will remain a critical component of our electricity supply system. Careful consideration will need to be given to whether additional interconnectors are the most cost-effective way to strengthen the network. More broadly, affordability must always be an important consideration when new measures are proposed. Improvements in consumer technologies and services, such as battery storage and digital meters, could help consumers to manage their costs whilst also contributing to the delivery of more efficient energy services, helping to address the integration of variable renewable electricity generation and support system security. New pricing models, digital metering and smart grid technologies can likewise be levers for the integration of distributed energy resources. For all parties, be it households or large-scale investors, long‐term, consistent policy signals will aid the required investment decisions and optimise the allocation of resources. In particular, an agreed national approach for addressing our emissions reduction commitments in the electricity sector would play an important role in supporting investor confidence. As always, effective governance will be critical in managing the transition and implementing necessary changes. A comprehensive program of work is already underway by a range of market bodies and reviews. However, there is an urgent need to expedite and integrate this work into a comprehensive work program able to keep pace with the rapid rate of change. Our initial inquiries have made it clear that there is broad enthusiasm for a collaborative approach that can deliver better outcomes for all Australians. This Preliminary Report does not contain findings or recommendations. Instead, it fulfils the role of an issues paper, setting out observations and questions to guide a process of open consultations on the design of a new blueprint for the electricity sector. Seven key themes are identified, each supported by specific questions to be raised with the community.
Some of the key questions for the future of our energy system include:
The Panel welcomes submissions on either these questions or the more detailed questions contained throughout the Preliminary Report. Submissions and the Review’s consultations will aid the Panel to deliver a blueprint outlining national policy, legislative and rule changes required to maintain the security, reliability, and affordability of the NEM. Yüklə 271,55 Kb. Dostları ilə paylaş:
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