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Dave Osmond @davidosmond.bsky.social · 15h

Some greater detail here: www.linkedin.com/posts/david-...

Dave Osmond @davidosmond.bsky.social · 15h

Excellent report from the Grattan Institute recommending a modifed Safeguard mechanism be applied to electricity.
Related to this, it's worth noting that ACCUs are currently trading for $38 while just $11 for LGCs. I'd argue that LGCs offer better quality carbon offset for less than 1/3 price
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Grattan Institute @grattaninstitute.bsky.social · 2d

💡 Cheaper energy bills AND reduced emissions?

Our new report finds that Australian household energy bills are set to halve by 2050, leaving room for the federal gov't to cut emissions in the electricity sector without hurting households.

Here’s how: buff.ly/9UPN4ub

A graphic of wind turbines on a rocky shore, with the text New Grattan Report Bills down, emissions down, a practical path to net-zero electricity

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Dave Osmond @davidosmond.bsky.social · 19h

The original graph is for VRE, or wind and solar. So it doesn't include hydro.

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Reposted by Dave Osmond

Rachel Withers @rachelwithers.bsky.social · 4d

Imagine kicking the former national rugby captain out of your sports club instead of the gambling lobby.

To paraphrase Groucho Marx, who'd want to belong to a club that would accept Responsible Wagering Australia as one of its sponsors?

Bill Browne @browne90.bsky.social · 4d

Making his point for him -- just asking about the power of the gambling lobby gets Senator David Pocock booted from sports club the Prime Minister heads. www.theguardian.com/australia-ne...

Former Wallabies star David Pocock booted from parliamentary sports club

Exclusive: Senator accused of bringing social club into disrepute after raising concerns about its association with betting lobby

www.theguardian.com

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Dave Osmond @davidosmond.bsky.social · 4d

Australia has installed 80,000 residential batteries since July 1, or about 1.6GWh, as a result of the government rebate program.
bsky.app/profile/chri...

Chris Bowen @chrisbowenmp.bsky.social · 6d

80,000 is a big number. This is how big.

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Dave Osmond @davidosmond.bsky.social · 6d

This is to reduce the variability of curtailment, to make it more useful for a potential new flexible demand such as hydrogen production.

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Dave Osmond @davidosmond.bsky.social · 6d

Sorry, I guess you are asking about the night of Oct 4?
The model has 16 hours of perfect foresight. So on that night it knew that curtailment would be higher during the next day, so it delays charging till then.
(Cont)

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Dave Osmond @davidosmond.bsky.social · 6d

Also. During the last week when it was windy at night the storage was already at 100%, hence wind generation would have to be curtailed.

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Dave Osmond @davidosmond.bsky.social · 6d

Charging can occur from any supply below the dotted line.
It just looks like solar because of the order that I have plotted each tech.
But given that charging mostly happens during peak solar hours, I recommend that storage is located close to solar generation.

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Dave Osmond @davidosmond.bsky.social · 6d

The following article contains many more details, assumptions & FAQs about my simulation, including what is ‘Other’, estimates of cost ($107/MWh), emissions, required capacity, scale factors, analysis of the most challenging days & much more (end)
reneweconomy.com.au/a-near-100-p...

reneweconomy.com.au

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Dave Osmond @davidosmond.bsky.social · 6d

The 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’ (4/5)

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Dave Osmond @davidosmond.bsky.social · 6d

Here is the simulation from weeks 212 to 215. It was 100% renewable
(3/5)

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Dave Osmond @davidosmond.bsky.social · 6d

Last week had:
- below average demand (98% of long-term average)
- extreme above average wind (135%)
- above average solar (113%) (2/5)

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Dave Osmond @davidosmond.bsky.social · 6d

Thread: Each week I run 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 24GW/120GWh of storage (5 hrs at av demand)
Results:
Last week: 100% RE
Last 215 weeks: 98.5% RE (1/5)

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Reposted by Dave Osmond

Simon Rosenberg @simonrosenberg.bsky.social · 8d

1/2 "everyone from News Corp to the Atlas Network, to Advance, to CPAC, to Gina Rinehart are busting a foofer valve—and spending a great deal of money—making the case for the takeover"

It’s the process, says @timdunlop.bsky.social, not Andrew Hastie per se.
tdunlop.substack.com/p/i-suppose-...

I suppose we have to think about Andrew Hastie now, sigh

Okay, but let's be clear on what the real problem is

tdunlop.substack.com

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