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Green Collective @greencollective.io · 9h

Renewable generation and discharging storage equalled 16% of yesterday's electricity demand, with a peak of 22% at 23:45. Fossil fuel generation (mostly gas) equalled 60% of demand. 0% of generation was exported, 24% of demand was met by imports.

A stacked area chart of the electricity generation mix on the island of Ireland with the following fuel types: battery, 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 rooftop solar. Source: EirGrid, SEMO

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Green Collective @greencollective.io · 06/10/2026

7 of 9 months in 2026 have set new record lows for grid carbon intensity in Ireland. September was no exception, with emissions totalling roughly 565k tonnes of CO2 -- down more than 50% from just a few years ago 🏭️ 🔎 Much more in the latest edition of "Irish Grid Monthly", available now!

A line chart of monthly grid carbon intensity on the island of Ireland. The x-axis runs January-December and there is one line for each year.

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

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Green Collective @greencollective.io · 06/10/2026

Renewable generation and discharging storage equalled 39% of yesterday's electricity demand, with a peak of 68% at 00:45. Fossil fuel generation (mostly gas) equalled 42% of demand. 0% of generation was exported, 19% of demand was met by imports.

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Green Collective @greencollective.io · 05/10/2026

The top Irish counties for renewable electricity in September: 1. Offaly 2. Kerry 3. Cork 4. Galway 5. Mayo Dominated by wind this time of year but solar determining the order here for Galway in particular, with Ballymoneen Solar Farm there now the second largest solar farm on the island ☀️ 📊

A county-level heatmap of Irish wind generation. Counties are divided into three tiers, according to how much wind energy each produced.

Footnote reads: All-island figures. Renewables comprise wind, hydro, solar, and biomass. Excludes small wind and solar farms not registered with SEMO. Excludes rooftop solar. Source: SEMO

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Green Collective @greencollective.io · 05/10/2026

Renewable generation and discharging storage equalled 55% of yesterday's electricity demand, with a peak of 69% at 16:15. Fossil fuel generation (mostly gas) equalled 36% of demand. 0% of generation was exported, 9% of demand was met by imports.

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Green Collective @greencollective.io · 04/10/2026

Renewable generation and discharging storage equalled 28% of yesterday's electricity demand, with a peak of 47% at 23:45. Fossil fuel generation (mostly gas) equalled 47% of demand. 0% of generation was exported, 25% of demand was met by imports.

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Green Collective @greencollective.io · 03/10/2026

Irish solar farm growth, 2019 through September 2026. All growth in recent years is in the ROI. The fleet expanded a lot this year, and has headed west: the island's second largest solar farm is now in County Galway. The newest? Monvallet in County Louth which powered up during September. 📊 ☀️ ☘️

A map of Irish solar farms showing capacity growth by year.

Footnote reads: Excludes small solar farms not registered with SEMO. Marker size indicates typical peak output, colour the year of first significant generation. Faded markers indicate retired or currently offline plants. Source: SEMO

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Green Collective @greencollective.io · 03/10/2026

Renewable generation and discharging storage equalled 56% of yesterday's electricity demand, with a peak of 77% at 11:45. Fossil fuel generation (mostly gas) equalled 35% of demand. 1% of generation was exported, 10% of demand was met by imports.

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Green Collective @greencollective.io · 02/10/2026

Last month was the windiest September yet, with wind farms producing 1256GWh: equivalent to 36.8% of the island's electricity demand ☘️ 🍃 Significantly up from the same period last year, the upward trend for September wind continues 📈

A county-level heatmap of Irish wind generation. Counties are divided into three tiers, according to how much wind energy each produced.

Renewables comprise wind, hydro, solar, and biomass. Excludes wind and solar farms not registered with SEMO. Excludes rooftop solar.
Source: SEMO

A chart of wind generation in September months from 2019 through 2026. A bar chart indicating GWh is overlaid on a line chart indicating wind generation vs demand.

All-island figures. Source: EirGrid, SEMO

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Green Collective @greencollective.io · 02/10/2026

Renewable generation and discharging storage equalled 58% of yesterday's electricity demand, with a peak of 76% at 14:45. Fossil fuel generation (mostly gas) equalled 34% of demand. 1% of generation was exported, 9% of demand was met by imports.

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Green Collective @greencollective.io · 01/10/2026

The Irish grid in September: 🔹 43.0% renewables: 36.8% wind 💨, 4.8% solar ☀️, 1.1% biomass 🪵, 0.3% hydro 💧 🔹 39.1% fossil fuels: 37.5% gas 🏭️, 1.6% waste-to-energy 🔥 🔹 1.3% storage: 0.8% pumped hydro ⛰️, 0.5% batteries 🔋 🔌 16.5% imports All this and much more in the latest "Irish Grid Monthly"!

A map of Ireland with markers representing electricity generation and sized in proportion to amount of electricity produced.

Footnote reads: Excludes small wind and solar farms not registered with SEMO. Excludes rooftop solar. Marker positions are approximate in order to avoid overlaps. Source: SEMO

A treemap of the electricity mix on the island of Ireland. Larger sources are annotated with the GWh produced.

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

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Green Collective @greencollective.io · 01/10/2026

Renewable generation and discharging storage equalled 63% of yesterday's electricity demand, with a peak of 83% at 13:15. Fossil fuel generation (mostly gas) equalled 32% of demand. 2% of generation was exported, 6% of demand was met by imports.

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Green Collective @greencollective.io · 30/09/2026

Renewable generation and discharging storage equalled 72% of yesterday's electricity demand, with a peak of 81% at 04:45. Fossil fuel generation (mostly gas) equalled 31% of demand. 3% of generation was exported, 0% of demand was met by imports.

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Green Collective @greencollective.io · 29/09/2026

Renewable generation and discharging storage equalled 43% of yesterday's electricity demand, with a peak of 69% at 23:15. Fossil fuel generation (mostly gas) equalled 46% of demand. 1% of generation was exported, 12% of demand was met by imports.

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Green Collective @greencollective.io · 28/09/2026

Renewable generation and discharging storage equalled 47% of yesterday's electricity demand, with a peak of 70% at 01:45. Fossil fuel generation (mostly gas) equalled 34% of demand. 0% of generation was exported, 19% of demand was met by imports.

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Green Collective @greencollective.io · 27/09/2026

Renewable generation and discharging storage equalled 62% of yesterday's electricity demand, with a peak of 76% at 16:15. Fossil fuel generation (mostly gas) equalled 30% of demand. 1% of generation was exported, 9% of demand was met by imports.

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Green Collective @greencollective.io · 26/09/2026

Renewable generation and discharging storage equalled 42% of yesterday's electricity demand, with a peak of 69% at 23:45. Fossil fuel generation (mostly gas) equalled 48% of demand. 1% of generation was exported, 11% of demand was met by imports.

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Green Collective @greencollective.io · 25/09/2026

In 2025, renewables and storage exceeded fossil fuels on the Irish grid in a September month for the first time. It's been a strong month for renewables but will we see a repeat in 2026? 🍃 🏭️ The answer and much more in the next edition of "Irish Grid Monthly", arriving October 1. Subscribe today!

A bar chart of electricity generation on the island of Ireland for June months between 2019 and 2026, inclusive. Each year has two bars: a green one for renewable generation and discharging storage, and a grey one for fossil fuels.

Footnote reads: All-island figures. Renewables comprise wind, hydro, solar, and biomass. Storage comprises batteries and pumped hydro. Fossil fuels comprise coal, gas, oil, and waste-to-energy. Source: EirGrid, SEMO

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Green Collective @greencollective.io · 25/09/2026

Extremely strong solar generation across the island earlier this week: - solar met 7% of Monday's electricity demand, 7.9% Wednesday - at peak sun, solar was supplying >25% of electricity demand - pronounced dips in demand at peak sun thanks to rooftop solar Pretty good as October closes in! ☀️ 🍂

A map of Ireland with markers representing generation at solar farms. Markers are sized in proportion to the total available power at each farm.

Footnote reads: All-island figures. Excludes small solar farms not registered with SEMO. Excludes rooftop solar.
Source: SEMO

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Green Collective @greencollective.io · 25/09/2026

Renewable generation and discharging storage equalled 53% of yesterday's electricity demand, with a peak of 68% at 14:15. Fossil fuel generation (mostly gas) equalled 39% of demand. 1% of generation was exported, 8% of demand was met by imports.

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Green Collective @greencollective.io · 24/09/2026

A sunny Monday, and EirGrid's dashboard showing a new all-island solar high: 1402MW ☀️ However, it's too close to call: as our charts show, spikes in real-time data are often later revised down and/or disappear with downsampling. Record or not, it's great to see such highs well into the autumn! ☀️

A line chart of Irish solar generation comparing three data sources:
- real-time EirGrid dashboard
- EirGrid's "historical quarter hourly source"
- best available source downsampled to 30 minutes

Footnote reads: All-island figures. Excludes rooftop solar. Source: EirGrid

A line chart of Irish solar generation comparing three data sources:
- real-time EirGrid dashboard
- best available source downsampled to 30 minutes

Footnote reads: All-island figures. Excludes rooftop solar. Source: EirGrid

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Green Collective @greencollective.io · 24/09/2026

Renewable generation and discharging storage equalled 22% of yesterday's electricity demand, with a peak of 40% at 23:45. Fossil fuel generation (mostly gas) equalled 55% of demand. 0% of generation was exported, 23% of demand was met by imports.

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Green Collective @greencollective.io · 23/09/2026

Renewable generation and discharging storage equalled 20% of yesterday's electricity demand, with a peak of 31% at 01:45. Fossil fuel generation (mostly gas) equalled 62% of demand. 0% of generation was exported, 18% of demand was met by imports.

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Green Collective @greencollective.io · 22/09/2026

Renewable generation and discharging storage equalled 32% of yesterday's electricity demand, with a peak of 49% at 13:45. Fossil fuel generation (mostly gas) equalled 44% of demand. 0% of generation was exported, 24% of demand was met by imports.

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Green Collective @greencollective.io · 21/09/2026

Renewable generation and discharging storage equalled 28% of yesterday's electricity demand, with a peak of 41% at 12:15. Fossil fuel generation (mostly gas) equalled 39% of demand. 0% of generation was exported, 33% of demand was met by imports.

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Green Collective @greencollective.io · 20/09/2026

Renewable generation and discharging storage equalled 54% of yesterday's electricity demand, with a peak of 68% at 11:45. Fossil fuel generation (mostly gas) equalled 27% of demand. 0% of generation was exported, 19% of demand was met by imports.

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Green Collective @greencollective.io · 19/09/2026

Renewable generation and discharging storage equalled 59% of yesterday's electricity demand, with a peak of 75% at 18:15. Fossil fuel generation (mostly gas) equalled 28% of demand. 0% of generation was exported, 14% of demand was met by imports.

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Green Collective @greencollective.io · 18/09/2026

Renewable generation and discharging storage equalled 56% of yesterday's electricity demand, with a peak of 72% at 15:45. Fossil fuel generation (mostly gas) equalled 27% of demand. 0% of generation was exported, 17% of demand was met by imports.

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Green Collective @greencollective.io · 17/09/2026

Renewable generation and discharging storage equalled 49% of yesterday's electricity demand, with a peak of 71% at 22:45. Fossil fuel generation (mostly gas) equalled 37% of demand. 0% of generation was exported, 14% of demand was met by imports.

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Green Collective @greencollective.io · 16/09/2026

Renewable generation and discharging storage equalled 51% of yesterday's electricity demand, with a peak of 62% at 17:15. Fossil fuel generation (mostly gas) equalled 33% of demand. 0% of generation was exported, 16% of demand was met by imports.

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Green Collective @greencollective.io · 15/09/2026

Renewable generation and discharging storage equalled 42% of yesterday's electricity demand, with a peak of 61% at 13:45. Fossil fuel generation (mostly gas) equalled 47% of demand. 0% of generation was exported, 12% of demand was met by imports.

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Green Collective @greencollective.io · 14/09/2026

Renewable generation and discharging storage equalled 14% of yesterday's electricity demand, with a peak of 31% at 16:15. Fossil fuel generation (mostly gas) equalled 57% of demand. 0% of generation was exported, 29% of demand was met by imports.

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Green Collective @greencollective.io · 13/09/2026

Renewable generation and discharging storage equalled 47% of yesterday's electricity demand, with a peak of 78% at 01:45. Fossil fuel generation (mostly gas) equalled 35% of demand. 2% of generation was exported, 20% of demand was met by imports.

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Green Collective @greencollective.io · 12/09/2026

Renewable generation and discharging storage equalled 34% of yesterday's electricity demand, with a peak of 76% at 23:45. Fossil fuel generation (mostly gas) equalled 42% of demand. 0% of generation was exported, 24% of demand was met by imports.

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Green Collective @greencollective.io · 11/09/2026

Renewable generation and discharging storage equalled 52% of yesterday's electricity demand, with a peak of 72% at 05:15. Fossil fuel generation (mostly gas) equalled 33% of demand. 1% of generation was exported, 16% of demand was met by imports.

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Green Collective @greencollective.io · 10/09/2026

Renewable generation and discharging storage equalled 25% of yesterday's electricity demand, with a peak of 41% at 23:45. Fossil fuel generation (mostly gas) equalled 49% of demand. 0% of generation was exported, 26% of demand was met by imports.

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Green Collective @greencollective.io · 09/09/2026

One week into the new month, it's a total flip for wind generation in Ireland: following one of the calmest ever August months, September is averaging well above normal with wind the largest source of power -- equal to 39% of the island's electricity demand 🍃 📊 A long way to go but a great start!

A chart of monthly wind generation in August months. A bar chart showing generation is overlaid on top of a line chart indicating wind generation over demand.
Footnote reads: All-island figures. Source: EirGrid

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Green Collective @greencollective.io · 09/09/2026

Renewable generation and discharging storage equalled 52% of yesterday's electricity demand, with a peak of 66% at 16:45. Fossil fuel generation (mostly gas) equalled 35% of demand. 0% of generation was exported, 13% of demand was met by imports.

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Green Collective @greencollective.io · 08/09/2026

Renewable generation and discharging storage equalled 49% of yesterday's electricity demand, with a peak of 60% at 13:45. Fossil fuel generation (mostly gas) equalled 35% of demand. 0% of generation was exported, 17% of demand was met by imports.

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Green Collective @greencollective.io · 07/09/2026

Renewable generation and discharging storage equalled 59% of yesterday's electricity demand, with a peak of 78% at 07:45. Fossil fuel generation (mostly gas) equalled 31% of demand. 2% of generation was exported, 12% of demand was met by imports.

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Green Collective @greencollective.io · 06/09/2026

Renewable generation and discharging storage equalled 33% of yesterday's electricity demand, with a peak of 65% at 23:45. Fossil fuel generation (mostly gas) equalled 39% of demand. 0% of generation was exported, 29% of demand was met by imports.

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Green Collective @greencollective.io · 05/09/2026

Renewable generation and discharging storage equalled 58% of yesterday's electricity demand, with a peak of 73% at 16:45. Fossil fuel generation (mostly gas) equalled 30% of demand. 1% of generation was exported, 13% of demand was met by imports.

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Green Collective @greencollective.io · 04/09/2026

How Ireland met electricity demand during August: 🔹 26.7% renewables: 18.2% wind 💨, 6.8% solar ☀️, 1.7% biomass 🪵, 0.1% hydro 💧 🔹 49.2% fossil fuels: 47.6% gas 🔥, 1.5% waste-to-energy 🔥, 0.1% oil 🛢️ 🔹 1.3% storage: 0.8% pumped hydro ⛰️, 0.5% batteries 🪫 🔌 22.5% imports (from our latest newsletter)

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Green Collective @greencollective.io · 04/09/2026

Renewable generation and discharging storage equalled 42% of yesterday's electricity demand, with a peak of 59% at 01:15. Fossil fuel generation (mostly gas) equalled 35% of demand. 0% of generation was exported, 24% of demand was met by imports.

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Green Collective @greencollective.io · 03/09/2026

Renewable generation and discharging storage equalled 40% of yesterday's electricity demand, with a peak of 56% at 23:45. Fossil fuel generation (mostly gas) equalled 44% of demand. 0% of generation was exported, 16% of demand was met by imports.

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Green Collective @greencollective.io · 02/09/2026

Renewable generation and discharging storage equalled 35% of yesterday's electricity demand, with a peak of 48% at 11:15. Fossil fuel generation (mostly gas) equalled 43% of demand. 0% of generation was exported, 22% of demand was met by imports.

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Green Collective @greencollective.io · 01/09/2026

🚨 Renewable sources met 1/4 of Ireland's electricity demand during August. The lowest share this summer, and down from 1/3 this time year last year -- what changed? 📊 This and much more in the latest "Irish Grid Monthly", arriving in subscribers' inboxes later today. Sign up now and get your copy!

A chart of monthly renewable generation in August months from 2019 through 2026. A bar chart indicating GWh is overlaid on a line chart indicating renewable generation vs demand. The bar for June 2025 is a paler colour to indicate that data is incomplete because the month is not yet over.

All-island figures. Renewables comprise wind, hydro, solar, and biomass. Excludes domestic solar.
Source: EirGrid, SEMO

A county-level heatmap of Irish renewable generation. Counties are divided into three tiers, according to how much renewable energy each produced.

Footnote reads: All-island figures. Renewables comprise wind, hydro, solar, and biomass. Excludes wind and solar farms not registered with SEMO. Excludes rooftop solar. Source: SEMO

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Green Collective @greencollective.io · 01/09/2026

Renewable generation and discharging storage equalled 41% of yesterday's electricity demand, with a peak of 62% at 03:45. Fossil fuel generation (mostly gas) equalled 40% of demand. 1% of generation was exported, 20% of demand was met by imports.

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Green Collective @greencollective.io · 31/08/2026

Renewable generation and discharging storage equalled 22% of yesterday's electricity demand, with a peak of 41% at 23:45. Fossil fuel generation (mostly gas) equalled 49% of demand. 0% of generation was exported, 29% of demand was met by imports.

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Green Collective @greencollective.io · 30/08/2026

Renewable generation and discharging storage equalled 15% of yesterday's electricity demand, with a peak of 24% at 14:45. Fossil fuel generation (mostly gas) equalled 55% of demand. 0% of generation was exported, 31% of demand was met by imports.

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