28 industrial & regional breweries in Ireland, largest first. Pub microbreweries excluded.
| Brewery | Size | Owner / group | CO₂ 2024 t/yr | Year |
|---|---|---|---|---|
| Diageo Ireland (St. James Gate) | Major | — | 64,192 | — |
| Beamish and Crawford (Heineken) | Major | — | — | — |
| Carlsberg | Major | — | — | — |
| Diageo | Major | — | — | — |
| Guinness Brewery | Major | — | — | — |
| Guinness Brewery Diageo | Major | — | — | — |
| Guinness Brewing (Diageo) | Major | — | — | 1759 |
| Heineken Ireland | Major | — | — | — |
| Heineken Ireland Brewery | Major | — | — | — |
| Molson Coors | Major | — | — | — |
| Murphy's Brewery (Heineken) | Major | — | — | — |
| Smithwick's (Diageo) | Major | — | — | — |
| St. James's Gate (Diageo) | Major | — | — | — |
| 5 Lamps Brewery | Brewery record | — | — | — |
| Bulmers Brewery | Brewery record | — | — | — |
| Carlow Brewing Company | Brewery record | — | — | — |
| Donegal Brewing Company | Brewery record | — | — | — |
| Franciscan Well Brewery | Brewery record | — | — | — |
| Galway Bay Brewery | Brewery record | — | — | — |
| Galway Hooker Brewery | Brewery record | — | — | — |
| Killarney Brewing Company | Brewery record | — | — | — |
| Kinnegar Brewing | Brewery record | — | — | — |
| Murphy's Brewery | Brewery record | — | — | — |
| Rye River Brewing Co. | Brewery record | — | — | — |
| Stone Barrel Brewing Company | Brewery record | — | — | — |
| Sullivan's Brewing Company | Brewery record | — | — | — |
| The Franciscan Well Brewery | Brewery record | — | — | — |
| Wicklow Wolf Brewing Company | Brewery record | — | — | — |
CO₂ values are Climate TRACE modelled facility estimates; repeated sector placeholders are suppressed.
BreweryAtlas