Top energy companies in Ireland
| Company Name | Country | City | Address 1 | State/Province | Postal Code | Website | Founding Year | Yearly Revenue in U.S. Dollars | Employees Total | Business Legal Type - Description | Number of Companies in Group | Company Registration Number | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | Greenvolt Next Ireland LIMITED | Ireland | Waterford | Confederation House, Block C&d | Waterford | X91 T449 | next.***** | 2005 | $39,429,020 | 55 | Corporation | 388 | 399788 |
| 2 | Dcc Energy LIMITED | Ireland | Dublin 18 | Dcc House, Leopardstown Road | Dublin | N/A | N/A | 1976 | $17,743,599 | 3,361 | Corporation | 878 | 79313 |
| 3 | Exolum Aviation Ireland LIMITED | Ireland | Swords | Corballis Road South | Dublin | N/A | N/A | 2015 | $17,072,551 | 29 | Corporation | 106 | 573318 |
| 4 | Flogas Unlimited Company | Ireland | Dublin 18 | Dcc House Leopardstown Road | Dublin | N/A | N/A | 1977 | $12,649,850 | 13 | Corporation | 878 | 60035 |
| 5 | Green Gas Generation LIMITED | Ireland | Dublin | 6 Fitzwilliam Place | Dublin | D02 XE61 | N/A | 2016 | $10,858,328 | 5 | Corporation | 4 | 588403 |
| 6 | Barryroe Transition Energy Public LIMITED Company | Ireland | Dublin | Paramount Court Corrig Road | Dublin | D18 R9C7 | N/A | 1997 | $8,304,894 | 13 | Corporation | 111 | 268662 |
| 7 | Etfuels LIMITED | Ireland | Dublin | Ground Floor | Dublin | D02 P593 | N/A | 2022 | $8,304,894 | 14 | Corporation | 6 | 727541 |
| 8 | Ecoaer UK LTD | Ireland | Galway | Curtaun | Galway | N/A | N/A | 2021 | $5,932,674 | 33 | Foreign company | 2 | 909535 |
| 9 | Four Seasons Energy Designated Activity Company | Ireland | Castleisland | Cahernard | Kerry | N/A | N/A | 2007 | $5,932,674 | 33 | Corporation | 16 | 437397 |
| 10 | Chilltec Ireland LIMITED | Ireland | Monaghan | M-tek 2 Building | Monaghan | H18 YH59 | N/A | 2025 | $5,932,674 | 33 | Corporation | 3 | 794253 |
| 11 | Maguire Mechanical LIMITED | Ireland | Dublin | Unit A | Dublin | N/A | N/A | 2019 | $5,932,674 | 18 | Corporation | 4 | 652752 |
| 12 | Frameform Steel Systems LIMITED | Ireland | Mullingar | Tullamore Road | West Meath | N91 PC56 | N/A | 2021 | $5,932,674 | 3 | Corporation | 2 | 694407 |
| 13 | Titan Air Conditioning LIMITED | Ireland | Dundalk | The Business Centre the Business Centre | Louth | A91 XH94 | N/A | 2022 | $5,932,674 | 3 | Corporation | 2 | 731669 |
| 14 | Derrynadivva Windfarm LIMITED | Ireland | Kilkenny | Sion Road | Kilkenny | N/A | N/A | 2007 | $5,932,674 | 2 | Corporation | 5 | 436658 |
| 15 | Coziq Enterprises LIMITED | Ireland | Dublin | 5 Gardiner Street Lower | Dublin | N/A | N/A | 2018 | $2,916,820 | 35 | Corporation | 2 | 636033 |
| 16 | 2050 Biomethane Gas Trading LIMITED | Ireland | Dublin | 31 Hamilton Square | Dublin | D07 XE22 | N/A | 2021 | $2,916,820 | 5 | Corporation | 5 | 696283 |
| 17 | Molgas Energy Ireland LIMITED | Ireland | Dublin | The Black Church | Dublin | D00 | N/A | 2018 | $2,916,820 | 1 | Corporation | 97 | 638612 |
| 18 | Ardrar LIMITED | Ireland | Dublin | 1 Warrington Place | Dublin | N/A | N/A | 2016 | $1,916,514 | 53 | Corporation | 235 | 591657 |
| 19 | Ecopower LIMITED | Ireland | Kilkenny | Sion Road | Kilkenny | N/A | N/A | 1996 | $1,916,514 | 25 | Corporation | 5 | 253411 |
| 20 | Gas & Storage LIMITED | Ireland | Cork | First Floor Penrose 1 | Cork | T23 KW81 | N/A | 2020 | $1,916,514 | 6 | Corporation | 3 | 679995 |
| 21 | Bord Na Mona Fuels LIMITED | Ireland | Newbridge | Main St | Kildare | N/A | bnm.***** | 1999 | $1,916,514 | 4 | Corporation | 1004 | 303301 |
| 22 | 2050 Biomethane Energy Group LIMITED | Ireland | Dublin | 31 Hamilton Square Bannow Road | Dublin | D07 XE22 | N/A | 2021 | $1,916,514 | 4 | Corporation | 5 | 694436 |
| 23 | Lisglennon AD LIMITED | Ireland | Killala | Lisglennon | Mayo | N/A | N/A | 2020 | $1,916,514 | 3 | Corporation | 2 | 681142 |
| 24 | 2050 Biomethane Production LIMITED | Ireland | Dublin | 31 Hamilton Square | Dublin | D07 XE22 | N/A | 2021 | $1,916,514 | 3 | Corporation | 5 | 696282 |
| 25 | AB Energy Cogeneration Ireland LIMITED | Ireland | Dublin | 56 Fitzwilliam Square N-suite B02 | Dublin | D02 X224 | N/A | 2025 | $1,916,514 | 3 | Corporation | 54 | 794985 |
Showing 25 of 129 companies
Request Free SampleEnergy companies in Ireland by region
129 energy companies across 25 Irish counties. The table below shows the share each region holds.
Energy companies in Ireland by employee size
| Bracket | Companies | Share |
|---|---|---|
| 1-4 | 67 | |
| 5-9 | 46 | |
| 20-49 | 6 | |
| 10-19 | 4 | |
| 50-99 | 2 | |
| 100-199 | 2 | |
| 0 or Unknown | 2 |
Energy companies in Ireland by revenue
| Bracket | Companies | Share |
|---|---|---|
| 1 to 100.000 | 61 | |
| 100.001 to 499.999 | 38 | |
| 1.000.000 to 4.999.999 | 14 | |
| 5.000.000 to 9.999.999 | 9 | |
| 10.000.000 to 49.999.999 | 5 | |
| 0 or Unknown | 2 |
NACE Rev 2, NACE and industry classification for Irish energy companies
Irish energy companies are classified under NACE Rev 2 section D (Electricity, gas, steam and air conditioning supply). Ireland's NACE Rev 2 classification mirrors NACE Rev 2 at the 4-digit level, so the codes match exactly. The list above covers every active business in this category registered with the Companies Registration Office (CRO) (Irish Business Register).
Closely related business services
Frequently asked questions about energy companies in Ireland
Our list tracks 129 active energy companies across every Irish provincie, sourced from the Irish Companies Registration Office (CRO) (commercial register) and verified monthly. The exact count changes as firms register, dissolve and merge.
The region with the most energy companies is Dublin, followed by the other major economic regions. The full regional breakdown above shows the share each Irish provincie holds.
Irish energy companies are classified under NACE Rev 2 section D (Electricity, gas, steam and air conditioning supply), which mirrors Ireland's national NACE Rev 2 codes. The list above covers every active Irish company in this category. Ireland's NACE Rev 2 classification is a 1:1 NACE Rev 2 implementation at the 4-digit level, so the codes match exactly.
Yes. Apply your filters (region, size, revenue, etc.) on the platform, preview the result, then export the full filtered list as CSV or Excel. Larger exports are delivered by email link. Request a free sample first if you want to evaluate the data before you buy.
Every record includes the firm name, full address, primary phone, business email (where available), website, organisasjonsnummer (org. nr.), VAT registration, employee size, revenue band, founding year and NACE / NACE Rev 2 classification. Records are sourced from the Companies Registration Office (CRO) (commercial register) and re-verified monthly.
Monthly. Each refresh removes firms that have dissolved and adds new registrations from the latest Companies Registration Office (CRO) feeds. The "Last updated" line at the top of this page shows the most recent refresh date.
25 Irish counties have at least one active energy companie in our list. The region with the most energy companies is Dublin, followed by the other major economic regions. Use the regional breakdown table above to see the full distribution.
