NEM interconnected with WEM, together with interconnectors between completely different areas of NEM with transmission line ahead capacities in GW. The SA–NSW interconnector is underneath development and included in our mannequin. The capability for a number of interconnectors connecting the identical areas is aggregated to replicate simplified particular person interconnections. The indicated areas are SA, QLD, NSW, VIC, WA, and TAS. Credit score: PNAS Nexus (2024). DOI: 10.1093/pnasnexus/pgae127
A mannequin charts probably the most cost-efficient path to a totally renewable electrical energy grid for Australia.
Raheel Ahmed Shaikh and colleagues modeled attainable situations for Australia’s jap and western grids, utilizing photo voltaic and wind technology, short-to-long-term vitality storage, and monetary enter knowledge to discover low-cost capability combine. Going fully renewable would require vital enlargement of each technology and storage.
Interconnecting the 2 grids would scale back generation capacity wants by 6% and storage energy capability wants by 14%. The least value renewable-only grid could be dominated by wind, with between 50–75% of vitality contributed by generators.
Storage could be obligatory for any absolutely renewable grid. Australia would wish the power to retailer as much as 4 days of demand. That represents 13 instances extra storage energy capability and over 40 instances extra storage vitality capability than the nation has at current, contemplating batteries, pumped hydro, and hydrogen storage.
An 82% renewable grid would solely require a fourfold improve in storage energy capability and a threefold improve in vitality capability. In response to the authors, the optimum path to a totally renewable grid would require an funding of roughly A$130–150 billion, round 8–10% of the nation’s Gross Home Product, assuming future expertise improvement and value discount.
The analysis is published within the journal PNAS Nexus.
Extra data:
Raheel A Shaikh et al, Sturdy capital value optimization of technology and multitimescale storage necessities for a 100% renewable Australian electrical energy grid, PNAS Nexus (2024). DOI: 10.1093/pnasnexus/pgae127
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Charting a cost-efficient path to a renewable vitality grid for Australia (2024, Might 3)
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