Brad W
LightNews LightNews
Brad W
@bradw.bsky.social
58 followers 120 following 100 posts
Interested in Western Australia's main electricity grid and other goings on in climate and energy.
Weekly summaries of the WEM.
He/Him.
Posts Replies Media Videos
WEM stats — week ending 23 November:

WEM generation by technology
• Rooftop Solar: 25.1%
• Utility Solar: 2.8%
• Wind: 16.6%
• Pumped Hydro: 0.0%
• Battery Discharge 2.9% (2.0% Ren.)
• Gas: 26.4%
• Coal: 26.2%
• Distillate: 0.0%

Renewable contribution to demand:
• WA: 46.5%

🔌💡
Chart of electricity generation in the South West Interconnected System from the 17th to the 23rd of November 2025. Black coal ran at 300 to 1100 megawatts with lower output in the middle of the day due to rooftop solar. Gas more or less followed demand, peaked at 800 to 1300 megawatts in the evening and dropped to between 150 and 600 megawatts in the mid morning. Wind had moderate output during the week providing between 100 and 900 megawatts with lower output on Friday. Rooftop solar peaked at 1900 to 2500 megawatts and followed a typical profile throughout the week. Utility solar peaked at 170 to 250 megawatts during the day and followed a typical profile on days without cloud cover. Battery discharge peaked at 50 to 500 megawatts during the morning and evening. Distillate peaked at 10 megawatts.
November 29, 2025 at 7:49 AM
WEM stats — week ending 16 November:

WEM generation by technology
• Rooftop Solar: 34.0%
• Utility Solar: 3.2%
• Wind: 20.7%
• Pumped Hydro: 0.0%
• Battery Discharge 2.7% (2.2% Ren.)
• Gas: 20.1%
• Coal: 19.2%
• Distillate: 0.1%

Renewable contribution to demand:
• WA: 60.1%

🔌💡
Chart of electricity generation in the South West Interconnected System from the 3rd to the 9th of November 2025. Black coal ran at 250 to 900 megawatts with lower output in the middle of the day due to rooftop solar. Gas more or less followed demand, peaked at 500 to 1400 megawatts in the evening and dropped to between 25 and 650 megawatts in the mid morning. Wind had moderate to high output during the week providing between 50 and 950 megawatts with slightly lower output on Tuesday. Rooftop solar peaked at 2400 to 2600 megawatts and followed a typical profile throughout the week. Utility solar peaked at 140 to 250 megawatts during the day and followed a typical profile through most of the week. Battery discharge peaked at 70 to 450 megawatts during the morning and evening. Distillate peaked at 10 megawatts.
November 17, 2025 at 1:52 PM
WEM stats — week ending 9 November:

WEM generation by technology
• Rooftop Solar: 29.1%
• Utility Solar: 2.9%
• Wind: 21.4%
• Pumped Hydro: 0.0%
• Battery Discharge 3.5% (2.6% Ren.)
• Gas: 22.1%
• Coal: 20.8%
• Distillate: 0.2%

Renewable contribution to demand:
• WA: 56.0%

🔌💡
Chart of electricity generation in the South West Interconnected System from the 3rd to the 9th of November 2025. Black coal ran at 200 to 650 megawatts with lower output in the middle of the day due to rooftop solar. Gas more or less followed demand, peaked at 400 to 1300 megawatts in the evening and dropped to between 25 and 600 megawatts in the mid morning. Wind had moderate to high output during the week providing between 50 and 900 megawatts with lower output on Wednesday. Rooftop solar peaked at 1600 to 2600 megawatts and followed a typical profile throughout the week. Utility solar peaked at 90 to 240 megawatts during the day and followed a typical profile through most of the week. Battery discharge peaked at 100 to 600 megawatts during the morning and evening. Distillate peaked at 15 megawatts.
November 12, 2025 at 2:18 PM
WEM stats — week ending 2 November:

WEM generation by technology
• Rooftop Solar: 29.6%
• Utility Solar: 3.6%
• Wind: 19.0%
• Pumped Hydro: 0.0%
• Battery Discharge 3.4% (2.8% Ren.)
• Gas: 24.0%
• Coal: 20.4%
• Distillate: 0.0%

Renewable contribution to demand:
• WA: 55.0%

🔌💡
Chart of electricity generation in the South West Interconnected System from the 27th of October to the 2nd of November 2025. Black coal ran at 200 to 900 megawatts with lower output in the middle of the day due to rooftop solar. Gas more or less followed demand, peaked at 500 to 1100 megawatts in the evening and dropped to between 100 and 350 megawatts in the mid morning. Wind had low to high output during the week providing between 50 and 900 megawatts with lower output on Thursday. Rooftop solar peaked at 1600 to 2600 megawatts and followed a typical profile throughout the week. Utility solar peaked at 180 to 240 megawatts during the day and followed a typical profile through most of the week. Battery discharge peaked at 100 to 600 megawatts during the morning and evening.
November 4, 2025 at 1:24 PM
WEM stats — week ending 26 October:

WEM generation by technology
• Rooftop Solar: 27.1%
• Utility Solar: 3.0%
• Wind: 15.9%
• Pumped Hydro: 0.0%
• Battery Discharge 3.0% (2.2% Ren.)
• Gas: 27.5%
• Coal: 23.5%
• Distillate: 0.0%

Renewable contribution to demand:
• WA: 48.2%

🔌💡
Chart of electricity generation in the South West Interconnected System from the 20th to the 26th of October 2025. Black coal ran at 300 to 950 megawatts with lower output in the middle of the day due to rooftop solar. Gas more or less followed demand, peaked at 700 to 1200 megawatts in the evening and dropped to between 50 and 650 megawatts in the mid morning. Wind had low to high output during the week providing between 50 and 850 megawatts with lower output on Saturday. Rooftop solar peaked at 2000 to 2500 megawatts and followed a typical profile throughout the week. Utility solar peaked at 170 to 220 megawatts during the day and followed a typical profile through most of the week. Battery discharge peaked at 80 to 600 megawatts during the morning and evening. Distillate peaked at 10 megawatts.
October 28, 2025 at 1:07 PM
WEM stats — week ending 19 October:

WEM generation by technology
• Rooftop Solar: 29.0%
• Utility Solar: 3.4%
• Wind: 12.5%
• Pumped Hydro: 0.0%
• Battery Discharge 3.2% (2.4% Ren.)
• Gas: 24.1%
• Coal: 27.7%
• Distillate: 0.0%

Renewable contribution to demand:
• WA: 47.4%

🔌💡
Chart of electricity generation in the South West Interconnected System from the 13th to the 19th of October 2025. Black coal ran at 350 to 900 megawatts with lower output in the middle of the day due to rooftop solar. Gas more or less followed demand, peaked at 700 to 1000 megawatts in the evening and dropped to between 50 and 450 megawatts in the mid morning. Wind had low to moderate output during the week providing between 50 and 850 megawatts with lower output on Wednesday and Thursday. Rooftop solar peaked at 2100 to 2600 megawatts and followed a typical profile throughout the week. Utility solar peaked at 190 to 240 megawatts during the day and followed a typical profile through most of the week. Battery discharge peaked at 70 to 550 megawatts during the morning and evening. Distillate peaked at 10 megawatts.
October 26, 2025 at 5:39 AM
WEM stats — week ending 12 October:

WEM generation by technology
• Rooftop Solar: 29.8%
• Utility Solar: 3.5%
• Wind: 12.2%
• Pumped Hydro: 0.0%
• Battery Discharge 2.7% (1.9% Ren.)
• Gas: 30.7%
• Coal: 21.1%
• Distillate: 0.0%

Renewable contribution to demand:
• WA: 47.4%

🔌💡
Chart of electricity generation in the South West Interconnected System from the 6th to the 12th of October 2025. Black coal ran at 250 to 800 megawatts with lower output in the middle of the day due to rooftop solar. Gas more or less followed demand, peaked at 850 to 1500 megawatts in the evening and dropped to between 200 and 900 megawatts in the mid morning. Wind had low to moderate output during the week providing between 50 and 650 megawatts with output steady through most of the week. Rooftop solar peaked at 2400 to 2600 megawatts and followed a typical profile throughout the week. Utility solar peaked at 210 to 240 megawatts during the day and followed a typical profile through most of the week. Battery discharge peaked at 80 to 500 megawatts during the morning and evening.
October 26, 2025 at 5:08 AM
WEM stats — week ending 5 October:

WEM generation by technology
• Rooftop Solar: 23.7%
• Utility Solar: 2.7%
• Wind: 14.1%
• Pumped Hydro: 0.0%
• Battery Discharge 3.4% (2.3% Ren.)
• Gas: 31.8%
• Coal: 24.2%
• Distillate: 0.0%

Renewable contribution to demand:
• WA: 42.8%

🔌💡
Chart of electricity generation in the South West Interconnected System from the 29th of September to the 5th of October 2025. Black coal ran at 300 to 800 megawatts with lower output in the middle of the day due to rooftop solar. Gas more or less followed demand, peaked at 600 to 1450 megawatts in the evening and dropped to between 200 and 900 megawatts in the mid morning. Wind had low to moderate output during the week providing between 50 and 800 megawatts with lower output on Thursday. Rooftop solar peaked at 600 to 2500 megawatts and had an interrupted profile due to cloud cover on Saturday and Sunday. Utility solar peaked at 100 to 240 megawatts during the day and had an interrupted profile due to cloud cover. Battery discharge peaked at 110 to 500 megawatts during the morning and evening. Distillate peaked at 35 megawatts.
October 10, 2025 at 3:35 AM
WEM stats — week ending 28 September:

WEM generation by technology
• Rooftop Solar: 29.3%
• Utility Solar: 3.3%
• Wind: 16.2%
• Pumped Hydro: 0.0%
• Battery Discharge 3.2% (2.4% Ren.)
• Gas: 23.9%
• Coal: 24.1%
• Distillate: 0.0%

Renewable contribution to demand:
• WA: 51.2%

🔌💡
Chart of electricity generation in the South West Interconnected System from the 22nd to the 28th of September 2025. Black coal ran at 300 to 800 megawatts with lower output in the middle of the day due to rooftop solar. Gas more or less followed demand, peaked at 500 to 1400 megawatts in the evening and dropped to between 100 and 700 megawatts in the mid morning. Wind had moderate output during the week providing between 50 and 900 megawatts with lower output on Wednesday. Rooftop solar peaked at 1700 to 2600 megawatts and followed a typical profile. Utility solar peaked at 170 to 230 megawatts during the day and followed a typical profile. Battery discharge peaked at 80 to 500 megawatts during the morning and evening. Distillate peaked at 25 megawatts.
October 10, 2025 at 2:59 AM
WEM stats — week ending 21 September:

WEM generation by technology
• Rooftop Solar: 23.2%
• Utility Solar: 2.4%
• Wind: 12.2%
• Pumped Hydro: 0.0%
• Battery Discharge 2.8% (1.7% Ren.)
• Gas: 30.5%
• Coal: 28.9%
• Distillate: 0.0%

Renewable contribution to demand:
• WA: 39.5%
Chart of electricity generation in the South West Interconnected System from the 15th to the 21st of September 2025. Black coal ran at 300 to 1150 megawatts with lower output in the middle of the day due to rooftop solar. Gas more or less followed demand, peaked at 700 to 1650 megawatts in the evening and dropped to between 50 and 1000 megawatts in the mid morning. Wind had low to moderate output during the week providing between 50 and 850 megawatts with lower output on Tuesday and Friday. Rooftop solar peaked at 1800 to 2500 megawatts and followed a typical profile. Utility solar peaked at 160 to 230 megawatts during the day and followed a typical profile. Battery discharge peaked at 50 to 550 megawatts during the morning and evening.
September 25, 2025 at 9:58 AM
WEM stats — week ending 14 September:

WEM generation by technology
• Rooftop Solar: 23.4%
• Utility Solar: 2.2%
• Wind: 18.4%
• Pumped Hydro: 0.0%
• Battery Discharge 2.8% (1.8% Ren.)
• Gas: 21.9%
• Coal: 31.3%
• Distillate: 0.0%

Renewable contribution to demand:
• WA: 45.8%

🔌💡
Chart of electricity generation in the South West Interconnected System from the 8th to the 14th of September 2025. Black coal ran at 400 to 1150 megawatts with lower output in the middle of the day due to rooftop solar. Gas more or less followed demand, peaked at 400 to 1550 megawatts in the evening and dropped to between 50 and 800 megawatts in the mid morning. Wind had moderate to high output during the week providing between 100 and 950 megawatts with lower output on Monday. Rooftop solar peaked at 1700 to 2500 megawatts and had an interrupted profile due to cloud cover. Utility solar peaked at 110 to 220 megawatts during the day and had an interrupted profile due to cloud cover. Battery discharge peaked at 200 to 530 megawatts during the morning and evening.
September 19, 2025 at 9:38 AM
WEM stats — week ending 7 September:

WEM generation by technology
• Rooftop Solar: 21.0%
• Utility Solar: 2.1%
• Wind: 16.5%
• Pumped Hydro: 0.0%
• Battery Discharge 2.1% (1.2% Ren.)
• Gas: 26.8%
• Coal: 31.5%
• Distillate: 0.0%

Renewable contribution to demand:
• WA: 40.8%

🔌💡
Chart of electricity generation in the South West Interconnected System from the 1st to the 7th of September 2025. Black coal ran at 400 to 1150 megawatts with lower output in the middle of the day due to rooftop solar. Gas more or less followed demand, peaked at 700 to 1300 megawatts in the evening and dropped to between 100 and 850 megawatts in the mid morning. Wind had low to high output during the week providing between 20 and 1000 megawatts with lower output on Monday and Thursday. Rooftop solar peaked at 1400 to 2600 megawatts and had an interrupted profile due to cloud cover. Utility solar peaked at 160 to 220 megawatts during the day and had an interrupted profile due to cloud cover. Battery discharge peaked at 140 to 490 megawatts during the morning and evening.
September 11, 2025 at 9:44 AM
WEM stats — week ending 31 August:

WEM generation by technology
• Rooftop Solar: 19.8%
• Utility Solar: 1.9%
• Wind: 12.7%
• Pumped Hydro: 0.0%
• Battery Discharge 2.9% (1.4% Ren.)
• Gas: 40.2%
• Coal: 22.4%
• Distillate: 0.1%

Renewable contribution to demand:
• WA: 35.8%

🔌💡
Chart of electricity generation in the South West Interconnected System from the 25th to the 31st of August 2025. Black coal ran at 400 to 1150 megawatts with lower output in the middle of the day due to rooftop solar. Gas more or less followed demand, peaked at 950 to 2400 megawatts in the evening and dropped to between 200 and 1500 megawatts in the mid morning. Wind had low to moderate output during the week providing between 20 and 850 megawatts with lower output on Wednesday and Thursday. Rooftop solar peaked at 1700 to 2600 megawatts and had an interrupted profile due to cloud cover. Utility solar peaked at 130 to 220 megawatts during the day and had an interrupted profile due to cloud cover. Battery discharge peaked at 190 to 590 megawatts during the morning and evening. Distillate peaked at 50 megawatts.
September 11, 2025 at 9:36 AM
WEM stats — week ending 24 August:

WEM generation by technology
• Rooftop Solar: 16.6%
• Utility Solar: 1.4%
• Wind: 14.3%
• Pumped Hydro: 0.0%
• Battery Discharge 3.0% (1.5% Ren.)
• Gas: 37.5%
• Coal: 27.2%
• Distillate: 0.0%

Renewable contribution to demand:
• WA: 33.8%

🔌💡
Chart of electricity generation in the South West Interconnected System from the 18th to the 24th of August 2025. Black coal ran at 400 to 850 megawatts with lower output in the middle of the day due to rooftop solar. Gas more or less followed demand, peaked at 750 to 1900 megawatts in the evening and dropped to between 300 and 1000 megawatts in the mid morning. Wind had low to moderate output during the week providing between 20 and 950 megawatts with lower output on Thursday and Friday. Rooftop solar peaked at 1550 to 2450 megawatts and had an interrupted profile due to cloud cover. Utility solar peaked at 110 to 190 megawatts during the day and had an interrupted profile due to cloud cover. Battery discharge peaked at 190 to 530 megawatts during the morning and evening. Distillate peaked at 10 megawatts.
September 11, 2025 at 9:35 AM
WEM stats — week ending 17 August:

WEM generation by technology
• Rooftop Solar: 22.2%
• Utility Solar: 2.1%
• Wind: 18.7%
• Pumped Hydro: 0.0%
• Battery Discharge 3.0% (1.9% Ren.)
• Gas: 29.6%
• Coal: 24.4%
• Distillate: 0.0%

Renewable contribution to demand:
• WA: 44.9%

🔌💡
Chart of electricity generation in the South West Interconnected System from the 11th to the 17th of August 2025. Black coal ran at 350 to 850 megawatts with lower output in the middle of the day due to rooftop solar. Gas more or less followed demand, peaked at 650 to 1650 megawatts in the evening and dropped to between 200 and 900 megawatts in the mid morning. Wind had moderate to high output during the week providing between 20 and 950 megawatts with lower output on Monday. Rooftop solar peaked at 1400 to 2500 megawatts and had an interrupted profile due to cloud cover. Utility solar peaked at 190 to 210 megawatts during the day and had an interrupted profile due to cloud cover. Battery discharge peaked at 180 to 580 megawatts during the morning and evening. Distillate peaked at 10 megawatts.
August 29, 2025 at 8:17 AM
WEM stats — week ending 10 August:

WEM generation by technology
• Rooftop Solar: 18.4%
• Utility Solar: 1.2%
• Wind: 15.5%
• Pumped Hydro: 0.0%
• Battery Discharge 2.8% (1.4% Ren.)
• Gas: 30.6%
• Coal: 31.5%
• Distillate: 0.0%

Renewable contribution to demand:
• WA: 36.5%

🔌💡
Chart of electricity generation in the South West Interconnected System from the 4th to the 10th of August 2025. Black coal ran at 400 to 1150 megawatts with lower output in the middle of the day due to rooftop solar. Gas more or less followed demand, peaked at 650 to 1700 megawatts in the evening and dropped to between 250 and 900 megawatts in the mid morning. Wind had low to high output during the week providing between 10 and 950 megawatts with lower output on Monday and Tuesday. Rooftop solar peaked at 1300 to 2400 megawatts and had an interrupted profile due to cloud cover. Utility solar peaked at 90 to 170 megawatts during the day and had an interrupted profile due to cloud cover. Battery discharge peaked at 220 to 600 megawatts during the morning and evening.
August 23, 2025 at 5:09 AM
WEM stats — week ending 3 August:

WEM generation by technology
• Rooftop Solar: 16.2%
• Utility Solar: 1.2%
• Wind: 18.0%
• Pumped Hydro: 0.0%
• Battery Discharge 2.5% (1.3% Ren.)
• Gas: 30.0%
• Coal: 32.0%
• Distillate: 0.1%

Renewable contribution to demand:
• WA: 36.7%

🔌💡
Chart of electricity generation in the South West Interconnected System from the 28th of July to the 3rd of August 2025. Black coal ran at 550 to 1100 megawatts with lower output in the middle of the day due to rooftop solar. Gas more or less followed demand, peaked at 750 to 2100 megawatts in the evening and dropped to between 150 and 800 megawatts in the mid morning. Wind had moderate to high output during the week providing between 50 and 1000 megawatts with lower output on Wednesday. Rooftop solar peaked at 1300 to 2400 megawatts and had an interrupted profile due to cloud cover. Utility solar peaked at 95 to 170 megawatts during the day and had an interrupted profile due to cloud cover. Battery discharge peaked at 160 to 600 megawatts during the morning and evening. Distillate peaked at 10 megawatts.
August 23, 2025 at 4:07 AM
WEM stats — week ending 27 July:

WEM generation by technology
• Rooftop Solar: 9.1%
• Utility Solar: 1.0%
• Wind: 14.5%
• Pumped Hydro: 0.0%
• Battery Discharge 2.7% (1.1% Ren.)
• Gas: 41.3%
• Coal: 31.3%
• Distillate: 0.1%

Renewable contribution to demand:
• WA: 25.7%

🔌💡
Chart of electricity generation in the South West Interconnected System from the 21st to the 27th of July 2025. Black coal ran at 600 to 1100 megawatts with lower output in the middle of the day due to rooftop solar. Gas more or less followed demand, peaked at 1200 to 2100 megawatts in the evening and dropped to between 400 and 1100 megawatts in the mid morning. Wind had low to moderate output during the week providing between 50 and 1000 megawatts with lower output on Tuesday and Friday. Rooftop solar peaked at 900 to 2100 megawatts and had an interrupted profile due to cloud cover. Utility solar peaked at 85 to 150 megawatts during the day and had an interrupted profile due to cloud cover. Battery discharge peaked at 210 to 510 megawatts during the morning and evening. Distillate peaked at 10 megawatts.
August 16, 2025 at 8:00 AM
WEM stats — week ending 20 July:

WEM generation by technology
• Rooftop Solar: 9.0%
• Utility Solar: 1.2%
• Wind: 12.8%
• Pumped Hydro: 0.0%
• Battery Discharge 2.1% (0.8% Ren.)
• Gas: 41.4%
• Coal: 33.4%
• Distillate: 0.0%

Renewable contribution to demand:
• WA: 23.8%

🔌💡
Chart of electricity generation in the South West Interconnected System from the 14th to the 20th of July 2025. Black coal ran at 500 to 1050 megawatts with lower output in the middle of the day due to rooftop solar. Gas more or less followed demand, peaked at 1100 to 1900 megawatts in the evening and dropped to between 200 and 1100 megawatts in the mid morning. Wind had low to moderate output during the week providing between 50 and 1000 megawatts with lower output on Tuesday, Thursday and Saturday. Rooftop solar peaked at 900 to 1250 megawatts and had an interrupted profile due to cloud cover. Utility solar peaked at 90 to 150 megawatts during the day and had an interrupted profile due to cloud cover. Battery discharge peaked at 120 to 400 megawatts during the morning and evening. Distillate peaked at 25 megawatts.
August 16, 2025 at 4:31 AM
WEM stats — week ending 13 July:

WEM generation by technology
• Rooftop Solar: 13.4%
• Utility Solar: 1.3%
• Wind: 15.6%
• Pumped Hydro: 0.0%
• Battery Discharge 2.1% (0.9% Ren.)
• Gas: 36.2%
• Coal: 31.4%
• Distillate: 0.0%

Renewable contribution to demand:
• WA: 31.2%

🔌💡
Chart of electricity generation in the South West Interconnected System from the 7th to the 13th of July 2025. Black coal ran at 500 to 1150 megawatts with lower output in the middle of the day due to rooftop solar. Gas more or less followed demand, peaked at 900 to 2000 megawatts in the evening and dropped to between 100 and 1000 megawatts in the mid morning. Wind had variable output during the week providing between 50 and 950 megawatts with lower output on the weekend. Rooftop solar peaked at 550 to 2200 megawatts and had an interrupted profile due to cloud cover. Utility solar peaked at 80 to 160 megawatts during the day and had an interrupted profile due to cloud cover. Battery discharge peaked at 170 to 470 megawatts during the morning and evening.
August 16, 2025 at 3:57 AM
WEM stats — week ending 6 July:

WEM generation by technology
• Rooftop Solar: 12.1%
• Utility Solar: 1.0%
• Wind: 14.9%
• Pumped Hydro: 0.0%
• Battery Discharge 2.4% (1.1% Ren.)
• Gas: 35.3%
• Coal: 34.3%
• Distillate: 0.0%

Renewable contribution to demand:
• WA: 29.1%

🔌💡
Chart of electricity generation in the South West Interconnected System from the 30th of June to the 6th of July 2025. Black coal ran at 500 to 1150 megawatts with lower output in the middle of the day due to rooftop solar. Gas more or less followed demand, peaked at 650 to 1800 megawatts in the evening and dropped to between 200 and 1000 megawatts in the mid morning. Wind had variable output during the week providing between 10 and 900 megawatts with lower output on Tuesday, Wednesday and Saturday. Rooftop solar peaked at 800 to 2100 megawatts and had an interrupted profile due to cloud cover. Utility solar peaked at 80 to 140 megawatts during the day and had an interrupted profile due to cloud cover. Battery discharge peaked at 170 to 500 megawatts during the morning and evening. Distillate peaked at 50 megawatts.
July 9, 2025 at 9:15 AM
WEM stats — week ending 29 June:

WEM generation by technology
• Rooftop Solar: 15.4%
• Utility Solar: 1.4%
• Wind: 15.7%
• Pumped Hydro: 0.0%
• Battery Discharge 1.9% (0.8% Ren.)
• Gas: 37.6%
• Coal: 27.9%
• Distillate: 0.0%

Renewable contribution to demand:
• WA: 33.4%

🔌💡
Chart of electricity generation in the South West Interconnected System from the 23rd to the 29th of June 2025. Black coal ran at 400 to 900 megawatts with lower output in the middle of the day due to rooftop solar. Gas more or less followed demand, peaked at 800 to 2000 megawatts in the evening and dropped to between 250 and 800 megawatts in the mid morning. Wind had variable output during the week providing between 10 and 850 megawatts with lower output on Wednesday and Thursday. Rooftop solar peaked at 1500 to 2100 megawatts and had an interrupted profile due to cloud cover. Utility solar peaked at 90 to 180 megawatts during the day and had an interrupted profile due to cloud cover. Battery discharge peaked at 140 to 450 megawatts during the morning and evening. Distillate peaked at 12 megawatts.
July 6, 2025 at 9:39 AM
WEM stats — week ending 22 June:

WEM generation by technology
• Rooftop Solar: 10.8%
• Utility Solar: 1.0%
• Wind: 16.6%
• Pumped Hydro: 0.0%
• Battery Discharge 1.8% (0.6% Ren.)
• Gas: 36.0%
• Coal: 33.8%
• Distillate: 0.0%

Renewable contribution to demand:
• WA: 29.0%

🔌💡
Chart of electricity generation in the South West Interconnected System from the 16th to the 22nd of June 2025. Black coal ran at 600 to 1150 megawatts with lower output in the middle of the day due to rooftop solar. Gas more or less followed demand, peaked at 900 to 1700 megawatts in the evening and dropped to between 350 and 800 megawatts in the mid morning. Wind had variable output during the week providing between 10 and 900 megawatts with lower output on Monday and Thursday. Rooftop solar peaked at 1000 to 1900 megawatts and had an interrupted profile due to cloud cover. Utility solar peaked at 90 to 160 megawatts during the day and had an interrupted profile due to cloud cover. Battery discharge peaked at 140 to 360 megawatts during the morning and evening. Distillate peaked at 30 megawatts.
July 6, 2025 at 9:03 AM
WEM stats — week ending 15 June:

WEM generation by technology
• Rooftop Solar: 12.2%
• Utility Solar: 1.4%
• Wind: 8.7%
• Pumped Hydro: 0.0%
• Battery Discharge 1.5% (0.5% Ren.)
• Gas: 37.8%
• Coal: 38.4%
• Distillate: 0.0%

Renewable contribution to demand:
• WA: 22.8%

🔌💡
Chart of electricity generation in the South West Interconnected System from the 9th to the 15th of June 2025. Black coal ran at 600 to 1150 megawatts with lower output in the middle of the day due to rooftop solar. Gas more or less followed demand, peaked at 950 to 1750 megawatts in the evening and dropped to between 400 and 1300 megawatts in the mid morning. Wind had low output during the week providing between 0 and 850 megawatts with lower output on Wednesday and the weekend. Rooftop solar peaked at 1250 to 2000 megawatts and had an interrupted profile due to cloud cover. Utility solar peaked at 90 to 160 megawatts during the day and had an interrupted profile due to cloud cover. Battery discharge peaked at 120 to 300 megawatts during the morning and evening. Pumped hydro peaked at 3 megawatts.
July 6, 2025 at 8:31 AM
WEM stats — week ending 8 June:

WEM generation by technology
• Rooftop Solar: 14.7%
• Utility Solar: 1.6%
• Wind: 16.7%
• Pumped Hydro: 0.0%
• Battery Discharge 1.9% (0.9% Ren.)
• Gas: 33.3%
• Coal: 31.8%
• Distillate: 0.0%

Renewable contribution to demand:
• WA: 33.9%

🔌💡
Chart of electricity generation in the South West Interconnected System from the 2nd to the 8th of June 2025. Black coal ran at 500 to 1150 megawatts with lower output in the middle of the day due to rooftop solar. Gas more or less followed demand, peaked at 850 to 1550 megawatts in the evening and dropped to between 200 and 800 megawatts in the mid morning. Wind had variable output during the week providing between 0 and 850 megawatts with lower output on Friday. Rooftop solar peaked at 1250 to 2000 megawatts and had an interrupted profile due to cloud cover. Utility solar peaked at 140 to 190 megawatts during the day and had an interrupted profile due to cloud cover. Battery discharge peaked at 140 to 410 megawatts during the morning and evening. Distillate peaked at 25 megawatts.
July 6, 2025 at 7:59 AM