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Reposted by Green Collective

Green Collective @greencollective.io · 1d

The September issue of "Irish Grid Monthly" is now available on our website. RESS, dispatch down, a new solar farm, and *so* *many* *records*!

Our newsletter subscribers receive these reports on the 1st of each month -- sign-up for free now and join them! 📥

www.greencollective.io/post/monthly...

Irish Grid Monthly: September 2025

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Green Collective @greencollective.io · 10h

Renewable generation and pumped storage equalled 35% of yesterday's electricity demand, with a peak of 88% at 03:00. Fossil fuel generation (mostly gas) equalled 50% of demand. 5% of generation was exported, 19% of demand was met by imports.

A stacked area chart of the electricity generation mix on the island of Ireland. There are eight fuel types: pumped storage, biomass, waste-to-energy, hydro, solar, wind, oil, and gas. There is also a black line showing electricity demand.

Footnote reads: All-island figures. Excludes domestic solar. Source: EirGrid, SEMO

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Reposted by Green Collective

Trevor Johnston @beerwithsubtitles.net · 1d

Fencing, fighting, torture, revenge, giants, monsters, chases, escapes, true love, miracles—it's the Irish electric grid in September!

Green Collective @greencollective.io · 1d

The September issue of "Irish Grid Monthly" is now available on our website. RESS, dispatch down, a new solar farm, and *so* *many* *records*!

Our newsletter subscribers receive these reports on the 1st of each month -- sign-up for free now and join them! 📥

www.greencollective.io/post/monthly...

Irish Grid Monthly: September 2025

www.greencollective.io

1 1

Green Collective @greencollective.io · 1d

The September issue of "Irish Grid Monthly" is now available on our website. RESS, dispatch down, a new solar farm, and *so* *many* *records*!

Our newsletter subscribers receive these reports on the 1st of each month -- sign-up for free now and join them! 📥

www.greencollective.io/post/monthly...

Irish Grid Monthly: September 2025

www.greencollective.io

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Green Collective @greencollective.io · 1d

Renewable generation and pumped storage equalled 62% of yesterday's electricity demand, with a peak of 83% at 00:00. Fossil fuel generation (mostly gas) equalled 32% of demand. 3% of generation was exported, 9% of demand was met by imports.

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Green Collective @greencollective.io · 2d

Renewable generation and pumped storage equalled 56% of yesterday's electricity demand, with a peak of 87% at 01:00. Fossil fuel generation (mostly gas) equalled 26% of demand. 2% of generation was exported, 20% of demand was met by imports.

A stacked area chart of the electricity generation mix on the island of Ireland. There are seven fuel types: pumped storage, biomass, waste-to-energy, hydro, solar, wind, and gas. There is also a black line showing electricity demand.

Footnote reads: All-island figures. Excludes domestic solar. Source: EirGrid, SEMO

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Green Collective @greencollective.io · 3d

81GWh yesterday from wind was the most ever for an October day, equivalent to 77.1% of the day's electricity demand. Add biomass, solar, and hydro and it's 82.2%. Only seven days have ever seen a higher share. Grid carbon intensity averaged 105gCO₂/KWh: the fourth lowest ever.

#StormAmy #SpeirGorm

A treemap of the electricity mix on the island of Ireland. There are eight fuel types: battery, pumped storage, biomass, hydro, solar, wind, gas, and waste-to-energy. Larger sources are annotated with the GWh and percentage of total generation that source comprised.

Footnote reads: All-island figures. Excludes domestic solar. Source: EirGrid, SEMO

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Green Collective @greencollective.io · 3d

Renewable generation and pumped storage equalled 82% of yesterday's electricity demand, with a peak of 92% at 00:45. Fossil fuel generation (mostly gas) equalled 26% of demand. 8% of generation was exported, 0% of demand was met by imports.

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Green Collective @greencollective.io · 3d

It takes a lot for the demand line to drop noticeably. Darragh and Éowyn, yes (see our January newsletter), but unlikely for Amy. And, actually, more demand would leave more room for renewables. We're probably seeing a lot of curtailment today; will know more when data's published Monday afternoon.

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Green Collective @greencollective.io · 3d

It doesn't get much greener on the Irish grid: up to 6pm, renewable generation today has equalled 83.1% of electricity demand. Only a dozen or so prior days have done better. With lower weekend demand, there's a chance we'll see an all-time low for daily carbon emissions.

#StormAmy #SpeirGorm

A stacked area chart of the renewable electricity generation mix on the island of Ireland. There are seven fuel types: pumped storage, biomass, waste-to-energy, hydro, solar, wind, and gas. The y axis indicates the percentage of demand being met by each source.

Footnote reads: All-island figures. Excludes domestic solar. Source: EirGrid, SEMO

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Green Collective @greencollective.io · 4d

As of 10am, wind has made up 70% of indigenous generation and renewable generation in total (biomass, hydro, wind, solar) has equalled 85.5% of the island's electricity demand. There's some exporting, gas generation's at a minimum. Looks set to last for the day.

#StormAmy #SpeirGorm

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Green Collective @greencollective.io · 4d

Renewable generation and pumped storage equalled 64% of yesterday's electricity demand, with a peak of 90% at 22:15. Fossil fuel generation (mostly gas) equalled 32% of demand. 3% of generation was exported, 7% of demand was met by imports.

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Green Collective @greencollective.io · 5d

Renewable generation and pumped storage equalled 65% of yesterday's electricity demand, with a peak of 77% at 00:00. Fossil fuel generation (mostly gas) equalled 32% of demand. 2% of generation was exported, 5% of demand was met by imports.

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Green Collective @greencollective.io · 6d

How on earth did we see a record in solar generation in Ireland at the end of September? In the latest "Irish Grid Monthly", we attempt to explain how dispatch down, individual solar farm performance, and grid limits all played a role 🔌 📊 🏅

currents.greencollective.io/irish-grid-m...

Irish Grid Monthly: September 2025

A newsletter from Green Collective with monthly and ad-hoc reporting on renewables and the Irish electricity grid.

currents.greencollective.io

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Green Collective @greencollective.io · 6d

Thanks @hannahdaly.ie for this shout-out to Green Collective in today's Irish Times! We're delighted to be included in this sweeping review of the incredible growth of solar around the world last few years 🌍 🌎 🌏

BTW, we can report generation from Irish solar farms reached 1TWh during September ☀️

An extract from the article: "Here in Ireland, wind remains our main renewable resource, but solar is beginning to shine here too. According to energy data gurus Green Collective, solar energy has been breaking records and cutting into fossil fuels. The cleanest days on our grid used to be blustery winter weekends; now they are often sunny summer afternoons. Rooftop panels are spreading fast. By July this year, Irish solar generation had already exceeded the whole of 2024, and is on track to cross the symbolic 1-terawatt-hour mark in 2025."

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Green Collective @greencollective.io · 6d

Renewable generation and pumped storage equalled 65% of yesterday's electricity demand, with a peak of 87% at 05:15. Fossil fuel generation (mostly gas) equalled 29% of demand. 4% of generation was exported, 9% of demand was met by imports.

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Green Collective @greencollective.io · 7d

It was neck and neck between renewables and fossil fuels until the final hours of September. Find out who won in the latest edition of "Irish Grid Monthly", just published to all our newsletter subscribers. Sign-up for free to read now!

Green Collective @greencollective.io · 9d

Aaaaaaand, we do of course mean *Wednesday*, October 1st. Sign up now to receive the next edition of "Irish Grid Monthly"! 📫

Green Collective @greencollective.io · 10d

September's shaping up to be a rare month when renewable generation in Ireland exceeds gas and oil generation. It's never happened outside of a winter month! 🤞

We'll know for sure Monday night and *you'll* know for sure Tuesday, October 1st, if you subscribe today to our free monthly newsletter.

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Green Collective @greencollective.io · 7d

We're hard at work putting the finishing touches on September's "Irish Grid Monthly". There's so much to cover this month it's only a question of what to leave out. Subscribe now and it'll arrive in your inbox later this afternoon. Sign-up link in bio!

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Green Collective @greencollective.io · 7d

Renewable generation and pumped storage equalled 51% of yesterday's electricity demand, with a peak of 76% at 00:00. Fossil fuel generation (mostly gas) equalled 38% of demand. 0% of generation was exported, 11% of demand was met by imports.

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Green Collective @greencollective.io · 8d

Renewable generation and pumped storage equalled 30% of yesterday's electricity demand, with a peak of 61% at 00:00. Fossil fuel generation (mostly gas) equalled 58% of demand. 0% of generation was exported, 12% of demand was met by imports.

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Green Collective @greencollective.io · 9d

Aaaaaaand, we do of course mean *Wednesday*, October 1st. Sign up now to receive the next edition of "Irish Grid Monthly"! 📫

Green Collective @greencollective.io · 10d

September's shaping up to be a rare month when renewable generation in Ireland exceeds gas and oil generation. It's never happened outside of a winter month! 🤞

We'll know for sure Monday night and *you'll* know for sure Tuesday, October 1st, if you subscribe today to our free monthly newsletter.

A treemap of the electricity mix on the island of Ireland. There are nine fuel types: battery, pumped storage, biomass, hydro, solar, wind, gas, oil, and waste-to-energy. Larger sources are annotated with the GWh and percentage of total generation that source comprised.

Footnote reads: All-island figures. Excludes domestic solar. Source: EirGrid, SEMO

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Green Collective @greencollective.io · 9d

Renewable generation and pumped storage equalled 14% of yesterday's electricity demand, with a peak of 23% at 15:00. Fossil fuel generation (mostly gas) equalled 61% of demand. 0% of generation was exported, 26% of demand was met by imports.

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Reposted by Green Collective

Green Collective @greencollective.io · 10d

September's shaping up to be a rare month when renewable generation in Ireland exceeds gas and oil generation. It's never happened outside of a winter month! 🤞

We'll know for sure Monday night and *you'll* know for sure Tuesday, October 1st, if you subscribe today to our free monthly newsletter.

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Green Collective @greencollective.io · 10d

Direct sign-up link:
currents.greencollective.io#/portal/signup

Currents by Green Collective

A newsletter from Green Collective with monthly and ad-hoc reporting on renewables and the Irish electricity grid.

currents.greencollective.io

2

Green Collective @greencollective.io · 10d

September's shaping up to be a rare month when renewable generation in Ireland exceeds gas and oil generation. It's never happened outside of a winter month! 🤞

We'll know for sure Monday night and *you'll* know for sure Tuesday, October 1st, if you subscribe today to our free monthly newsletter.

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