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Brad W @bradw.bsky.social · 01/10/2026

www.iea.org/reports/glob...

Brad W @bradw.bsky.social · 29/09/2026

WEM stats — week ending 27 September: WEM generation by technology • Rooftop Solar: 21.2% • Utility Solar: 2.4% • Wind: 16.5% • Pumped Hydro: 0.0% • Battery Discharge 4.6% (2.7% Ren.) • Gas: 37.4% • Coal: 17.9% • Distillate: 0.0% Renewable contribution to demand: • WA: 42.8% 🔌💡

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Brad W @bradw.bsky.social · 29/09/2026

WEM stats — week ending 20 September: WEM generation by technology • Rooftop Solar: 20.7% • Utility Solar: 2.3% • Wind: 18.9% • Pumped Hydro: 0.0% • Battery Discharge 5.2% (3.4% Ren.) • Gas: 34.0% • Coal: 18.8% • Distillate: 0.1% Renewable contribution to demand: • WA: 45.3% 🔌💡

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Brad W @bradw.bsky.social · 15/09/2026

WEM stats — week ending 13 September: WEM generation by technology • Rooftop Solar: 22.2% • Utility Solar: 2.5% • Wind: 21.9% • Pumped Hydro: 0.0% • Battery Discharge 5.3% (3.6% Ren.) • Gas: 23.7% • Coal: 24.4% • Distillate: 0.0% Renewable contribution to demand: • WA: 50.2% 🔌💡

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Brad W @bradw.bsky.social · 12/09/2026

WEM stats — week ending 6 September: WEM generation by technology • Rooftop Solar: 16.6% • Utility Solar: 1.6% • Wind: 10.5% • Pumped Hydro: 0.0% • Battery Discharge 4.8% (2.2% Ren.) • Gas: 40.0% • Coal: 26.5% • Distillate: 0.0% Renewable contribution to demand: • WA: 30.9%

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Brad W @bradw.bsky.social · 02/09/2026

bsky.app/profile/brad...

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Brad W @bradw.bsky.social · 01/09/2026

WEM stats — week ending 30 August: WEM generation by technology • Rooftop Solar: 16.5% • Utility Solar: 1.7% • Wind: 13.7% • Pumped Hydro: 0.0% • Battery Discharge 5.2% (2.6% Ren.) • Gas: 46.0% • Coal: 16.9% • Distillate: 0.0% Renewable contribution to demand: • WA: 34.5% 🔌💡

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Brad W @bradw.bsky.social · 31/08/2026

WEM stats — week ending 23 August: WEM generation by technology • Rooftop Solar: 16.1% • Utility Solar: 1.9% • Wind: 11.4% • Pumped Hydro: 0.0% • Battery Discharge 5.0% (2.3% Ren.) • Gas: 50.1% • Coal: 15.5% • Distillate: 0.0% Renewable contribution to demand: • WA: 31.7% 🔌💡

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Brad W @bradw.bsky.social · 17/08/2026

WEM stats — week ending 16 August: WEM generation by technology • Rooftop Solar: 16.8% • Utility Solar: 1.9% • Wind: 13.7% • Pumped Hydro: 0.0% • Battery Discharge 5.7% (2.7% Ren.) • Gas: 41.4% • Coal: 20.5% • Distillate: 0.0% Renewable contribution to demand: • WA: 35.1% 🔌💡

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Brad W @bradw.bsky.social · 17/08/2026

WEM stats — week ending 9 August: WEM generation by technology • Rooftop Solar: 14.8% • Utility Solar: 1.4% • Wind: 11.2% • Pumped Hydro: 0.0% • Battery Discharge 4.7% (2.0% Ren.) • Gas: 40.4% • Coal: 27.5% • Distillate: 0.0% Renewable contribution to demand: • WA: 29.4% 🔌💡

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Brad W @bradw.bsky.social · 17/08/2026

WEM stats — week ending 2 August: WEM generation by technology • Rooftop Solar: 16.1% • Utility Solar: 1.7% • Wind: 12.3% • Pumped Hydro: 0.0% • Battery Discharge 5.5% (2.4% Ren.) • Gas: 31.4% • Coal: 32.9% • Distillate: 0.0% Renewable contribution to demand: • WA: 32.5% 🔌💡

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Brad W @bradw.bsky.social · 02/08/2026

WEM stats — week ending 26 July: WEM generation by technology • Rooftop Solar: 14.2% • Utility Solar: 1.8% • Wind: 13.0% • Pumped Hydro: 0.0% • Battery Discharge 5.4% (2.4% Ren.) • Gas: 44.6% • Coal: 21.0% • Distillate: 0.0% Renewable contribution to demand: • WA: 31.4% 🔌💡

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Brad W @bradw.bsky.social · 22/07/2026

WEM stats — week ending 19 July: WEM generation by technology • Rooftop Solar: 13.2% • Utility Solar: 1.3% • Wind: 17.5% • Pumped Hydro: 0.0% • Battery Discharge 5.2% (2.3% Ren.) • Gas: 39.0% • Coal: 23.8% • Distillate: 0.0% Renewable contribution to demand: • WA: 34.3% 🔌💡

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Brad W @bradw.bsky.social · 16/07/2026

WEM stats — week ending 12 July: WEM generation by technology • Rooftop Solar: 12.6% • Utility Solar: 1.2% • Wind: 7.3% • Pumped Hydro: 0.0% • Battery Discharge 5.3% (1.7% Ren.) • Gas: 38.6% • Coal: 35.0% • Distillate: 0.0% Renewable contribution to demand: • WA: 22.8% 🔌💡

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Brad W @bradw.bsky.social · 12/07/2026

WEM stats — week ending 5 July: WEM generation by technology • Rooftop Solar: 9.7% • Utility Solar: 1.0% • Wind: 13.3% • Pumped Hydro: 0.0% • Battery Discharge 4.9% (1.7% Ren.) • Gas: 38.0% • Coal: 33.1% • Distillate: 0.0% Renewable contribution to demand: • WA: 25.7% 🔌💡

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Brad W @bradw.bsky.social · 05/07/2026

WEM stats — week ending 28 June: WEM generation by technology • Rooftop Solar: 12.3% • Utility Solar: 0.9% • Wind: 16.6% • Pumped Hydro: 0.0% • Battery Discharge 4.7% (1.9% Ren.) • Gas: 34.7% • Coal: 30.8% • Distillate: 0.0% Renewable contribution to demand: • WA: 31.7% 🔌💡

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Brad W @bradw.bsky.social · 24/06/2026

Exactly. Synergy and Western Power would have some inverter level visibility with regards to managing emergency procedures but even then most of their info would be a proxy based on distribution level measurements. Either way that's not the sort of info they're going to publicly release.

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Brad W @bradw.bsky.social · 23/06/2026

Hey @drcgjones.bsky.social no it's the component of output from the Cunderdin solar hybrid project that occurs after the sun's set. If I add residential battery output I'll have to dig through the latest WEM ESOO methodology first to work out how to approach it.

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Brad W @bradw.bsky.social · 23/06/2026

WEM stats — week ending 21 June: WEM generation by technology • Rooftop Solar: 10.0% • Utility Solar: 0.9% • Wind: 10.8% • Pumped Hydro: 0.0% • Battery Discharge 5.1% (1.7% Ren.) • Gas: 41.8% • Coal: 31.3% • Distillate: 0.1% Renewable contribution to demand: • WA: 23.4% 🔌💡

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Brad W @bradw.bsky.social · 16/06/2026

WEM stats — week ending 14 June: WEM generation by technology • Rooftop Solar: 8.6% • Utility Solar: 1.0% • Wind: 9.7% • Pumped Hydro: 0.0% • Battery Discharge 4.6% (1.3% Ren.) • Gas: 38.4% • Coal: 37.6% • Distillate: 0.0% Renewable contribution to demand: • WA: 20.6% 🔌💡

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Brad W @bradw.bsky.social · 09/06/2026

WEM stats — week ending 7 June: WEM generation by technology • Rooftop Solar: 13.2% • Utility Solar: 1.3% • Wind: 9.2% • Pumped Hydro: 0.0% • Battery Discharge 5.5% (2.2% Ren.) • Gas: 41.4% • Coal: 29.4% • Distillate: 0.0% Renewable contribution to demand: • WA: 25.9% 🔌💡

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Brad W @bradw.bsky.social · 02/06/2026

WEM stats — week ending 31 May: WEM generation by technology • Rooftop Solar: 10.6% • Utility Solar: 1.1% • Wind: 16.9% • Pumped Hydro: 0.0% • Battery Discharge 4.0% (1.4% Ren.) • Gas: 43.5% • Coal: 23.8% • Distillate: 0.1% Renewable contribution to demand: • WA: 30.0% 🔌💡

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Brad W @bradw.bsky.social · 28/05/2026

WEM stats — week ending 24 May: WEM generation by technology • Rooftop Solar: 14.4% • Utility Solar: 1.9% • Wind: 11.6% • Pumped Hydro: 0.0% • Battery Discharge 3.8% (1.7% Ren.) • Gas: 44.3% • Coal: 24.0% • Distillate: 0.0% Renewable contribution to demand: • WA: 29.6% 🔌💡

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Brad W @bradw.bsky.social · 23/05/2026

WEM stats — week ending 17 May: WEM generation by technology • Rooftop Solar: 14.6% • Utility Solar: 1.7% • Wind: 10.0% • Pumped Hydro: 0.0% • Battery Discharge 4.4% (1.9% Ren.) • Gas: 46.7% • Coal: 22.6% • Distillate: 0.0% Renewable contribution to demand: • WA: 28.2% 🔌💡

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Brad W @bradw.bsky.social · 13/05/2026

WEM stats — week ending 10 May: WEM generation by technology • Rooftop Solar: 19.4% • Utility Solar: 1.9% • Wind: 22.6% • Pumped Hydro: 0.0% • Battery Discharge 5.2% (3.1% Ren.) • Gas: 35.0% • Coal: 15.9% • Distillate: 0.0% Renewable contribution to demand: • WA: 47.0% 🔌💡

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Brad W @bradw.bsky.social · 09/05/2026

WEM stats — week ending 3 May: WEM generation by technology • Rooftop Solar: 13.6% • Utility Solar: 1.1% • Wind: 12.4% • Pumped Hydro: 0.0% • Battery Discharge 4.2% (1.8% Ren.) • Gas: 46.7% • Coal: 22.0% • Distillate: 0.0% Renewable contribution to demand: • WA: 28.9% 🔌💡

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Brad W @bradw.bsky.social · 02/05/2026

WEM stats — week ending 26 April: WEM generation by technology • Rooftop Solar: 18.5% • Utility Solar: 2.5% • Wind: 15.9% • Pumped Hydro: 0.0% • Battery Discharge 3.9% (2.2% Ren.) • Gas: 35.4% • Coal: 23.8% • Distillate: 0.0% Renewable contribution to demand: • WA: 39.1% 🔌💡

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Brad W @bradw.bsky.social · 27/04/2026

WEM stats — week ending 19 April: WEM generation by technology • Rooftop Solar: 18.2% • Utility Solar: 2.0% • Wind: 12.5% • Pumped Hydro: 0.0% • Battery Discharge 2.4% (1.1% Ren.) • Gas: 41.1% • Coal: 23.8% • Distillate: 0.0% Renewable contribution to demand: • WA: 33.8% 🔌💡

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Brad W @bradw.bsky.social · 18/04/2026

WEM stats — week ending 12 April: WEM generation by technology • Rooftop Solar: 19.7% • Utility Solar: 2.2% • Wind: 18.5% • Pumped Hydro: 0.0% • Battery Discharge 3.4% (2.0% Ren.) • Gas: 37.8% • Coal: 18.4% • Distillate: 0.0% Renewable contribution to demand: • WA: 42.4% 🔌💡

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Brad W @bradw.bsky.social · 09/04/2026

WEM stats — week ending 5 April: WEM generation by technology • Rooftop Solar: 21.1% • Utility Solar: 2.7% • Wind: 13.4% • Pumped Hydro: 0.0% • Battery Discharge 3.6% (2.0% Ren.) • Gas: 32.9% • Coal: 26.3% • Distillate: 0.0% Renewable contribution to demand: • WA: 39.2% 🔌💡

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Brad W @bradw.bsky.social · 05/04/2026

WEM stats — week ending 29 March: WEM generation by technology • Rooftop Solar: 15.9% • Utility Solar: 1.7% • Wind: 28.3% • Pumped Hydro: 0.0% • Battery Discharge 3.4% (2.0% Ren.) • Gas: 26.7% • Coal: 24.0% • Distillate: 0.0% Renewable contribution to demand: • WA: 47.9% 🔌💡

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Brad W @bradw.bsky.social · 29/03/2026

WEM stats — week ending 22 March: WEM generation by technology • Rooftop Solar: 18.7% • Utility Solar: 2.2% • Wind: 12.8% • Pumped Hydro: 0.0% • Battery Discharge 3.5% (1.6% Ren.) • Gas: 36.2% • Coal: 26.6% • Distillate: 0.0% Renewable contribution to demand: • WA: 35.3% 🔌💡

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Brad W @bradw.bsky.social · 22/03/2026

WEM stats — week ending 15 March: WEM generation by technology • Rooftop Solar: 21.1% • Utility Solar: 2.4% • Wind: 26.1% • Pumped Hydro: 0.0% • Battery Discharge 4.4% (3.0% Ren.) • Gas: 23.1% • Coal: 22.9% • Distillate: 0.0% Renewable contribution to demand: • WA: 52.6% 🔌💡

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Brad W @bradw.bsky.social · 17/03/2026

WEM stats — week ending 8 March: WEM generation by technology • Rooftop Solar: 20.6% • Utility Solar: 2.6% • Wind: 12.4% • Pumped Hydro: 0.0% • Battery Discharge 3.1% (1.6% Ren.) • Gas: 34.1% • Coal: 27.1% • Distillate: 0.1% Renewable contribution to demand: • WA: 37.2% 🔌💡

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Brad W @bradw.bsky.social · 06/03/2026

WEM stats — week ending 1 March: WEM generation by technology • Rooftop Solar: 22.3% • Utility Solar: 3.0% • Wind: 15.3% • Pumped Hydro: 0.0% • Battery Discharge 3.9% (2.3% Ren.) • Gas: 30.2% • Coal: 25.2% • Distillate: 0.1% Renewable contribution to demand: • WA: 42.9% 🔌💡

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Brad W @bradw.bsky.social · 01/03/2026

WEM stats — week ending 22 February: WEM generation by technology • Rooftop Solar: 24.1% • Utility Solar: 3.6% • Wind: 19.0% • Pumped Hydro: 0.0% • Battery Discharge 3.8% (2.6% Ren.) • Gas: 28.0% • Coal: 21.5% • Distillate: 0.0% Renewable contribution to demand: • WA: 49.3% 🔌💡

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Brad W @bradw.bsky.social · 01/03/2026

WEM stats — week ending 15 February: WEM generation by technology • Rooftop Solar: 21.3% • Utility Solar: 2.8% • Wind: 20.7% • Pumped Hydro: 0.0% • Battery Discharge 3.2% (2.0% Ren.) • Gas: 28.0% • Coal: 24.0% • Distillate: 0.0% Renewable contribution to demand: • WA: 46.8% 🔌💡

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Brad W @bradw.bsky.social · 15/02/2026

WEM stats — week ending 8 February: WEM generation by technology • Rooftop Solar: 22.2% • Utility Solar: 3.2% • Wind: 19.4% • Pumped Hydro: 0.0% • Battery Discharge 3.9% (2.3% Ren.) • Gas: 28.5% • Coal: 22.7% • Distillate: 0.1% Renewable contribution to demand: • WA: 47.1% 🔌💡

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Brad W @bradw.bsky.social · 05/02/2026

WEM stats — week ending 1 February: WEM generation by technology • Rooftop Solar: 23.7% • Utility Solar: 3.3% • Wind: 20.4% • Pumped Hydro: 0.0% • Battery Discharge 4.7% (3.0% Ren.) • Gas: 26.4% • Coal: 21.5% • Distillate: 0.0% Renewable contribution to demand: • WA: 50.4% 🔌💡

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Brad W @bradw.bsky.social · 30/01/2026

WEM stats — week ending 25 January: WEM generation by technology • Rooftop Solar: 22.8% • Utility Solar: 3.3% • Wind: 18.4% • Pumped Hydro: 0.0% • Battery Discharge 4.2% (2.6% Ren.) • Gas: 30.6% • Coal: 20.6% • Distillate: 0.1% Renewable contribution to demand: • WA: 47.1% 🔌💡

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Brad W @bradw.bsky.social · 21/01/2026

WEM stats — week ending 18 January: WEM generation by technology • Rooftop Solar: 25.2% • Utility Solar: 3.3% • Wind: 19.0% • Pumped Hydro: 0.0% • Battery Discharge 4.2% (2.7% Ren.) • Gas: 29.5% • Coal: 18.8% • Distillate: 0.0% Renewable contribution to demand: • WA: 50.2% 🔌💡

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Brad W @bradw.bsky.social · 17/01/2026

WEM stats — week ending 11 January: WEM generation by technology • Rooftop Solar: 25.3% • Utility Solar: 3.3% • Wind: 22.0% • Pumped Hydro: 0.0% • Battery Discharge 4.4% (2.9% Ren.) • Gas: 25.6% • Coal: 19.4% • Distillate: 0.0% Renewable contribution to demand: • WA: 53.5% 🔌💡

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Brad W @bradw.bsky.social · 11/01/2026

WEM Generation Summary for 2025: WEM generation by technology • Rooftop Solar: 20.8% • Utility Solar: 2.3% • Wind: 16.7% • Pumped Hydro: 0.0% • Battery Discharge 2.3% (1.4% Ren.) • Gas: 30.2% • Coal: 27.7% • Distillate: 0.1% Renewable contribution to demand: • WA: 41.2% 🔌💡

A chart of electricity generation in the WEM for 2025 that shows monthly generation by energy source.

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Brad W @bradw.bsky.social · 11/01/2026

Change in WEM Generation 2024 vs 2025 Overall Month by month 🔌💡

A chart of change in electricity generation in the WEM between 2024 and 2025 showing a year on year rise in coal output of ~150 gigawatt hours, a rise in combined cycle gas output of ~500 gigawatt hours reversing the change from 2023/24, a drop in open cycle gas output of ~900 gigawatts hours also reversing the trend from 2023/24, a rise in rooftop solar of ~800 gigawatt hours, a rise in wind power of ~100 gigawatt hours and a rise in battery discharge of ~400 gigawatt hours.

A chart of change in electricity generation in the WEM in 2025 for each energy source per month relative to the previous year, showing variable change in coal use month to month. Open cycle gas use decline for most of the year. Combined cycle gas use was higher for a large proportion of the year. Rooftop solar was higher across the year given the steady increase in installs and wind power was quite variable month to month. Utility scale solar increased due to the commissioning of the Cunderdin facility. Battery discharge increased significantly relative to 2024 as new assets in Kwinana and Collie were commissioned and reached full output.

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Brad W @bradw.bsky.social · 11/01/2026

WEM stats — week ending 4 January: WEM generation by technology • Rooftop Solar: 25.8% • Utility Solar: 3.6% • Wind: 18.4% • Pumped Hydro: 0.0% • Battery Discharge 4.9% (3.2% Ren.) • Gas: 26.7% • Coal: 20.6% • Distillate: 0.0% Renewable contribution to demand: • WA: 51.0% 🔌💡

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Brad W @bradw.bsky.social · 10/01/2026

WEM stats — week ending 28 December: WEM generation by technology • Rooftop Solar: 25.1% • Utility Solar: 3.8% • Wind: 22.9% • Pumped Hydro: 0.0% • Battery Discharge 5.0% (3.5% Ren.) • Gas: 22.7% • Coal: 20.5% • Distillate: 0.0% Renewable contribution to demand: • WA: 55.3% 🔌💡

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Brad W @bradw.bsky.social · 08/01/2026

WEM stats — week ending 21 December: WEM generation by technology • Rooftop Solar: 25.6% • Utility Solar: 2.9% • Wind: 19.5% • Pumped Hydro: 0.0% • Battery Discharge 3.6% (2.5% Ren.) • Gas: 29.4% • Coal: 19.0% • Distillate: 0.0% Renewable contribution to demand: • WA: 50.5% 🔌💡

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Brad W @bradw.bsky.social · 08/01/2026

WEM stats — week ending 14 December: WEM generation by technology • Rooftop Solar: 24.9% • Utility Solar: 3.2% • Wind: 19.5% • Pumped Hydro: 0.0% • Battery Discharge 3.4% (2.2% Ren.) • Gas: 31.1% • Coal: 17.9% • Distillate: 0.0% Renewable contribution to demand: • WA: 49.8% 🔌💡

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Brad W @bradw.bsky.social · 09/12/2025

WEM stats — week ending 7 December: WEM generation by technology • Rooftop Solar: 30.7% • Utility Solar: 3.5% • Wind: 16.9% • Pumped Hydro: 0.0% • Battery Discharge 3.1% (2.3% Ren.) • Gas: 25.0% • Coal: 20.8% • Distillate: 0.0% Renewable contribution to demand: • WA: 53.4% 🔌💡

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