David Osmond@DavidOsmond8
Jul 13, 2022
5 tweets
Thread: Each week I’m running a simulation of Australia’s main electricity grid using rescaled generation data to show that it can get very close to 100% renewable electricity with just 5 hrs of storage (24 GW / 120 GWh)
Results:
last week: 92.3% RE
last 46 weeks: 98.9% RE (1/4)
Here is the simulation from weeks 43 to 46. It was 94% renewable.
For earlier weeks, see the following thread (2/4)
twitter.com/DavidOsmond8/s…
David Osmond@DavidOsmond8
Jun 29 22
View on Twitter
Here is the simulation from weeks 41 to 44. It was 96.8% renewable.
For earlier weeks, see the following thread (2/4)
twitter.com/DavidOsmond8/s…
My simulation has used wind, rooftop & utility solar data from @OpenNEM, rescaled to supply ~60%, 25% & 20% respectively over the year. It uses the storage & existing hydro to match demand. If there remains a shortfall then the model supplements generation with “Other” (3/5)
The following is an estimate of the cost of this simulated grid. When you include the costs of the various generation types, storage & transmission, it comes to around $85/MWh (5/6)
“Other” is deliberately left undefined. In the short-medium term, it’s likely to be gas, hopefully transitioning to a zero-carbon alternative like green hydrogen, biofuels, long-term storage or demand management.
For FAQs & to see all the weekly results:
sites.google.com/view/mostly-re…
David Osmond
@DavidOsmond8
Wind Engineer at @Windlab in Canberra.
Passionate about renewables, EVs, efficiency and smart ideas that can reduce our impact on Earth. Views are my own.
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