64. Alstom Ireland

Alstom is a global company specialising in transport, rail infrastructure, marine, power generation and conversion. It designs, builds and services products and systems for energy and transport infrastructure. Alstom Ireland is based at the Luas Depot, Naas Road, Dub...

63. Salini Hydro

Salini Impregilo is an Italian industrial group specialising in the construction of major, complex projects, operating in over 50 countries with 34,400 employees and a turnover of around €4.2 billion. It is a leading infrastructure company in the water segment and has ...

62. Capital Oil Supplies

Capital Oil Supplies Ltd is an Irish owned company. Established in 1979, they provide diesel, kerosene and lubricants to customers in the Leinster region. Capital Oil Supplies Ltd operate a fleet of delivery trucks, and are based in Dublin 1.

61. Nicholl Oils

Nicholl Oils is Northern Ireland’s largest independent oil distributor. Its Irish arm is based in Galway.

60. Morris Oil

Morris Oil distributes home heating oil, agri oil, commercial oil and industrial oil. It employs more than 30 people in the south-east, operating in Waterford, Kilkenny, Tipperary, Cork and Laois. Its headquarters are in Fiddown, Co Kilkenny. Its main customers are b...

59. Glen Fuel

Glen Fuels is a family-run fuel distribution business established in 1986 with three oil depots located in Kilmacanogue, Gorey and Rosslare, servicing the east and south east coast of Ireland in all sectors. In 2015, Alan and Kevin Keyes launched Glenergy, an associate...

58. Air Products Ireland

Air Products Ireland Ltd serves customers in industrial, energy, technology and healthcare markets worldwide with a portfolio of atmospheric gases, process and speciality gases, performance materials, and equipment and services. The wider Air Products Group has 18,90...

57. NTR

NTR is an Irish public company. It is an investor in renewable energy and sustainable waste management businesses and it seeks to be the vehicle of choice for shareholders deploying capital in those sectors. Headquartered in Dublin, NTR's businesses extend across Irelan...

56. Veolia Ireland

Dalkia has always been the energy services activity of Veolia and, for brand clarity purposes, on the 25th July 2014 Dalkia adopted the group name. Veolia also operates combined heat and power plants as well as public lighting installation and maintenance.

55. Ireland Roc

Formerly known as Ireland Roc Topaz Bull Retail operates service stations.

54. Petroceltic

Petroceltic is an international Oil & Gas company, headquartered in the UK with operations in Algeria, Egypt, Bulgaria and Italy. The Company’s shares were formerly admitted to trading on the Alternative Investment Market of the London Stock Exchange and Irish Stock E...

53. M.W. Ireland

M.W. Ireland is a group holding company. The principal activity of the group is the distribution of fuel oil for domestic, industrial and commercial use.

52. Lisavaird Co-op Creameries

Lisavaird Co-Op was established in 1925 by a group of local farmers around Clonakilty to market their produce collectively and to purchase their inputs at the best possible terms. Its customer base has now extended to the wider West Cork community, to which it supplies...

51. CG Power Systems

CG Ireland comprises two entities CG Automation & CG Power Systems. The company provides distribution transformers, power transformers, automation, service division, T & D systems and solutions, switchgear products and instrument transformers. The wider CG group is ...

50. Esbi Engineering & Facility Management

The primary activity of Esbi Engineering & Facilitiy Management Limited is the provision of electrical, mechanical, civil and environmental engineering services. The company is part of ESB International (ESBI), a growing international energy company and one of Europ...

49. Suretank

Suretank manufactures cargo carrying units for the offshore oil industry. Established in 1995 in Ireland to supply the North Sea, the company is now a global supplier with design and manufacturing facilities in Ireland, UK, Brazil, USA, Poland, Thailand and China as w...

48. ESB NI/Electric Ireland

The primary activity of ESB Independent Energy (Ni) is the sale of electricity to business customers in Northern Ireland. The company is a limited company of ESB, Ireland's electricity utility.

47. Jones Oil

Jones Oil distributes home heating oil, domestic heating oil and commercial oil in Ireland. It is the largest distributor of Esso branded oil products across Ireland and was established in 1984. It operates local depots in Arklow, Dublin, Dundalk, Navan, Athlone, Mullin...

46. Schlumberger Information Solutions

Schlumberger Information Solutions global technology solutions to affiliates. It also provides training associated with oil exploration. It is based in Mahon, Cork.

45. Viridian

Viridian Power Limited is part of the Viridian Group, an independent energy company in the all-Ireland market. The main activity of Viridian Power is the generation of electricity from a plant at Huntstown, Co. Dublin. The Viridian Group comprises: Viridian Po...