1. DCC

DCC is an international sales, marketing and support services group, supplying essential products and services used by millions of people every day across energy, healthcare and technology. It employs some 13,700 people across 20 countries and operates across four div...

2. Applegreen

Motorway service station operator Petrogas is the company behind the Applegreen service stations. Applegreen is part of a consortium that holds a public-private partnership (PPP) contract with the National Roads Authority (NRA) to build and operate six motorway service ...

3. ESB

ESB is Ireland’s leading sustainable energy company, comprising power generation, networks, supply and international divisions.

4. Josar Holdings (Kentech)

Kentech provides engineering, procurement, construction, commissioning and maintenance services to the energy industry. Its customers are in the oil, gas, power, and petrochemical industries in the Middle East, Russia and Mexico. The company was founded in Ireland...

5. Circle K Ireland Energy Group Limited

Circle K Ireland is the largest fuel and convenience retailer in Ireland. Part of the global fuel and convenience store brand Circle K, it is owned and operated by the Canadian company Alimentation Couche-Tard. With 2,300 employees across the island of Ireland, its reta...

6. KN Circet

KN Circet is an infrastructure and utilities services provider operating in Ireland, UK and internationally. Its areas of expertise span civil engineering, telecoms, construction, wireless technologies, rail infrastructure and home energy services. Its Irish office is l...

7. Bord na Mona

Bord Na Móna is an integrated utility service provider encompassing electricity, heating, resource recovery, water, growing media and related services. It is headquartered in Newbridge, Co Kildare and employs over 2,000 people.

8. Caterpillar Northern Ireland

Founded in 1966, Caterpillar (NI) Limited is Europe's largest diesel generating set manufacturer. The company houses eight Caterpillar divisions across four sites in Northern Ireland and has global manufacturing facilities in Brazil, China, India and the USA. The compa...

9. Tullow Oil

Tullow oil is an independent oil and gas exploration and production company. Its focus is on finding and monetising oil in Africa and the Atlantic Margins. Its portfolio of over 135 licences spans 22 countries and is organised into three regions. It is headquartered in ...

10. C&F Group

C&F provides contract manufacturing services to the IT, motor and refrigeration industries from bases in Ireland, eastern Europe, the US and China. It also makes wind-turbines and renewable energy solutions. The group is entering the small-scale wind turbine market, d...

11. Corrib Oil

Apistone is the company behind Corrib Oil, which is involved in the sale and distribution of petrol products and the operation of service stations and shops. It operates 15 service stations around the country, mainly in the west, north west and midlands areas of the c...

12. EirGrid

EirGrid plc is a leading Irish energy business, dedicated to the provision of transmission and market services for the benefit of electricity consumers. It is a state-owned commercial company. EirGrid holds licences as independent electricity Transmission System Ope...

13. Scottish Power Renewables

Scottish Power Renewables is part of Iberdrola, the world’s largest wind energy developer, with an operating portfolio of over 14,000 megawatts. Scottish Power Renewables is responsible for progressing a number of onshore wind and marine energy projects in the UK and I...

14. Tedcastle

Tedcastle Holdings is one of the largest fuel importers and distributors with a diverse range of other businesses right across the island of Ireland. Founded in 1960, Tedcastle Oil Products (TOP) Oil is the most widely known company within the Tedcastle Holdings Gro...

15. SSE Airtricity

SSE Airtricity is in independent energy provider, supplying over half a million domestic and commercial gas, electricity and home energy services customers in the Republic of Ireland and Northern Ireland. The company is a wholly-owned division of the Top 40 FTSE listed ...

16. Kyte Powertech

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 ...

17. Stafford Group

The privately-owned Stafford Group is involved in sports retail, oil/solid fuel importation and distribution, shipping, storage and property development. The Stafford Group's energy division consists of Campus Oil and Stafford Fuels. The company also owns the Lifestlye ...

18. Bord Gáis Energy

Bord Gáis Energy is a gas and electricity supplier and supplier of energy services. It generates, sells and trades energy for use in the Republic of Ireland. It has been in operation since 1976 and today supplies over 750,000 customers with energy in Ireland. In 2014...

19. 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.

20. 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...