Green Collective

September round-up! All from the latest edition of "Irish Grid Monthly" -- arrives in subscribers' inboxes on the 1st of every month 📥 First: generation and imports vs. electricity demand, and where it happened ⚡ 📍 TL;DR: renewables + storage > fossil fuels 🍃 🏭 bsky.app/profile/gree...

Renewable generation and discharging storage equalled 76% of yesterday's electricity demand, with a peak of 81% at 13:15. Fossil fuel generation (mostly gas) equalled 27% of demand. 4% of generation was exported, 1% of demand was met by imports.

Renewable generation and discharging storage equalled 61% of yesterday's electricity demand, with a peak of 74% at 15:15. Fossil fuel generation (mostly gas) equalled 33% of demand. 2% of generation was exported, 7% of demand was met by imports.

Renewable generation and discharging storage equalled 71% of yesterday's electricity demand, with a peak of 81% at 08:45. Fossil fuel generation (mostly gas) equalled 27% of demand. 2% of generation was exported, 4% of demand was met by imports.

Renewable generation and discharging storage equalled 60% of yesterday's electricity demand, with a peak of 80% at 15:45. Fossil fuel generation (mostly gas) equalled 33% of demand. 2% of generation was exported, 9% of demand was met by imports.

Renewable generation and discharging storage equalled 32% of yesterday's electricity demand, with a peak of 55% at 22:45. Fossil fuel generation (mostly gas) equalled 48% of demand. 0% of generation was exported, 20% of demand was met by imports.

Renewable generation and discharging storage equalled 53% of yesterday's electricity demand, with a peak of 75% at 05:45. Fossil fuel generation (mostly gas) equalled 41% of demand. 2% of generation was exported, 8% of demand was met by imports.

Renewable generation and discharging storage equalled 52% of yesterday's electricity demand, with a peak of 69% at 12:45. Fossil fuel generation (mostly gas) equalled 33% of demand. 0% of generation was exported, 15% of demand was met by imports.

Renewable generation and discharging storage equalled 20% of yesterday's electricity demand, with a peak of 45% at 23:45. Fossil fuel generation (mostly gas) equalled 57% of demand. 0% of generation was exported, 24% of demand was met by imports.

Renewable generation and discharging storage equalled 13% of yesterday's electricity demand, with a peak of 30% at 12:15. Fossil fuel generation (mostly gas) equalled 58% of demand. 0% of generation was exported, 29% of demand was met by imports.

A sunny weekend in Ireland and great to see that even in mid-October solar farms can now peak as high as 1/4 of the island's electricity demand ☀️ As our charts below show, it makes a huge difference to mid-day grid carbon intensity! 🏭 📊

A sunny weekend in Ireland and great to see that even in mid-October solar farms can now peak as high as 1/4 of the island's electricity demand ☀️ As our charts below show, it makes a huge difference to mid-day grid carbon intensity! 🏭 📊

Renewable generation and discharging storage equalled 36% of yesterday's electricity demand, with a peak of 58% at 14:15. Fossil fuel generation (mostly gas) equalled 44% of demand. 0% of generation was exported, 20% of demand was met by imports.

Renewable generation and discharging storage equalled 30% of yesterday's electricity demand, with a peak of 64% at 00:45. Fossil fuel generation (mostly gas) equalled 48% of demand. 0% of generation was exported, 22% of demand was met by imports.

Renewable generation and discharging storage equalled 76% of yesterday's electricity demand, with a peak of 85% at 05:15. Fossil fuel generation (mostly gas) equalled 27% of demand. 5% of generation was exported, 2% of demand was met by imports.

Renewable generation and discharging storage equalled 60% of yesterday's electricity demand, with a peak of 81% at 00:15. Fossil fuel generation (mostly gas) equalled 28% of demand. 1% of generation was exported, 14% of demand was met by imports.

Renewable generation and discharging storage equalled 47% of yesterday's electricity demand, with a peak of 84% at 23:45. Fossil fuel generation (mostly gas) equalled 43% of demand. 3% of generation was exported, 13% of demand was met by imports.

Renewable generation and discharging storage equalled 49% of yesterday's electricity demand, with a peak of 83% at 13:45. Fossil fuel generation (mostly gas) equalled 43% of demand. 5% of generation was exported, 13% of demand was met by imports.

Renewable generation and discharging storage equalled 47% of yesterday's electricity demand, with a peak of 76% at 01:15. Fossil fuel generation (mostly gas) equalled 30% of demand. 0% of generation was exported, 23% of demand was met by imports.

Renewable generation and discharging storage equalled 72% of yesterday's electricity demand, with a peak of 82% at 05:15. Fossil fuel generation (mostly gas) equalled 26% of demand. 5% of generation was exported, 7% of demand was met by imports.

Renewable generation and discharging storage equalled 46% of yesterday's electricity demand, with a peak of 82% at 22:45. Fossil fuel generation (mostly gas) equalled 38% of demand. 1% of generation was exported, 16% of demand was met by imports.

On September 28, battery discharge reached 482MW: equal to 8.7% of all-island electricity demand at the time. Both figures were new records on the Irish grid 🥇 In the latest "Irish Grid Monthly" we explain how and why this happened despite no new battery capacity having come online this year 🔋 🔎

On September 28, battery discharge reached 482MW: equal to 8.7% of all-island electricity demand at the time. Both figures were new records on the Irish grid 🥇 In the latest "Irish Grid Monthly" we explain how and why this happened despite no new battery capacity having come online this year 🔋 🔎

Renewable generation and discharging storage equalled 43% of yesterday's electricity demand, with a peak of 69% at 14:45. Fossil fuel generation (mostly gas) equalled 42% of demand. 1% of generation was exported, 15% of demand was met by imports.

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.

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!

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!

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 ☀️ 📊

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.

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.

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.

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. 📊 ☀️ ☘️

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.

The first of each month is a busy day at the @greencollective.io home office! Highlights of our September issue: - county-level dispatch down analysis for wind - battery record deep-dive by @feiwang.bsky.social - annual solar growth map Read it online: currents.greencollective.io/irish-grid-m...

Some interesting developments in Ireland -that’s a lot of batteries/storage #IrishEnergyTransition #IrelandsEnergyTransition