# Top 42 energy companies in Ireland
Tamtam tracks 42 energy companies headquartered in Ireland. This list ranks all of them by number of employees on LinkedIn, led by Eaton, Weatherford and Descon Engineering Limited. Their median headcount is 152. Half of them were founded in 2010 or later. The most common headquarters are Dublin (17).
These are mostly large and mid-sized firms in the energy sector in Ireland. Many are focused on utilities and renewable energy. For example, ESB is focused on providing secure, sustainable, and affordable electricity supplies, while SSE Airtricity specializes in wind power. Weatherford provides solutions for the challenges of the energy industry, and Gas Networks Ireland operates and maintains Irelandโs national gas network.
A notable pattern is the concentration of headquarters in Dublin. Companies such as DCC plc, ESB, and Eaton are based in the capital. Other companies like EirGrid Group in Ballsbridge, BnM in Newbridge, and Gas Networks Ireland in Cork are located throughout the country.
๐ฎ๐ช Ireland ยท 42 companies ยท Updated Nov 12, 2026
| # | Company | Industry | Headquarters | Employees | Founded |
|---|---|---|---|---|---|
| 1 | [Eaton](https://www.tamtam.ai/c/eaton) (eaton.com)
Intelligent power management provider working towards a sustainable future by helping customers manage power, transition to renewable energy, and solve power management challenges globally | Appliances, Electrical, and Electronics Manufacturing | ๐ฎ๐ช Dublin | 51,011 | |
| 2 | [Weatherford](https://www.tamtam.ai/c/weatherford) (weatherford.com)
A global energy services company with 17,000 team members in 75 countries, providing solutions for the challenges of the energy industry | Oil and Gas | ๐ฎ๐ช Dublin | 29,301 | 1987 |
| 3 | [Descon Engineering Limited](https://www.tamtam.ai/c/descon-engineering-limited) (descon.com)
An integrated engineering services and manufacturing company operating in Pakistan and the Middle East, delivering client-specific solutions for Energy, Infrastructure, and Process industries | Education | ๐ฎ๐ช Lahore | 6,444 | |
| 4 | [ESB](https://www.tamtam.ai/c/esb) (esb.ie)
A company focused on providing secure, sustainable, and affordable electricity supplies to enhance societal, economic well-being, driven by innovation and collaboration for a brighter future | Utilities | ๐ฎ๐ช Dublin | 4,937 | 1927 |
| 5 | [DCC plc](https://www.tamtam.ai/c/dcc-plc) (dccenergy.com)
A global group providing solutions in energy, healthcare, and technology sectors through diverse businesses across 22 countries, driving long-term value creation | Executive Offices | ๐ฎ๐ช Dublin | 3,820 | 1976 |
| 6 | [ESB Networks](https://www.tamtam.ai/c/esb-networks) (esbnetworks.ie)
A subsidiary of ESB Group in Republic of Ireland operating and maintaining electricity distribution system, facilitating competitive market, and investing in network development | Utilities | ๐ฎ๐ช Dublin | 1,113 | 1927 |
| 7 | [EirGrid Group](https://www.tamtam.ai/c/eirgrid-group) (eirgrid.ie)
State-owned company operating and developing the national high voltage electricity grid in Ireland, managing power flow, planning for future, supplying distribution network #SteppingUp | Utilities | ๐ฎ๐ช Ballsbridge | 1,046 | 2006 |
| 8 | [BnM](https://www.tamtam.ai/c/bnm) (bnm.ie)
Develops and delivers renewable energy, low carbon solutions, and sustainable industrial parks, supporting communities and green innovators for Ireland's carbon neutrality. | Renewable Energy Power Generation | ๐ฎ๐ช Newbridge | 804 | |
| 9 | [SSE Airtricity](https://www.tamtam.ai/c/sse-airtricity) (sseairtricity.com)
A leading renewable energy provider in Ireland, specializing in wind power with a portfolio of onshore wind farms and green energy solutions for homes and businesses | Utilities | ๐ฎ๐ช Leopardstown | 754 | 1999 |
| 10 | [Gas Networks Ireland](https://www.tamtam.ai/c/gas-networks-ireland) (gasnetworks.ie)
Operate and maintain Irelandโs national gas network, supplying energy for heating, cooking, manufacturing, transport, and supporting renewable gas integration. | Utilities | ๐ฎ๐ช Cork | 721 | 1976 |
| 11 | [Bord Gรกis Energy](https://www.tamtam.ai/c/bord-gais-energy) (bordgaisenergy.ie)
Bord Gรกis Energy offers innovative energy services and solutions in Ireland, focusing on benefiting and serving over 750,000 customers since 1976 | Utilities | ๐ฎ๐ช Dublin | 594 | |
| 12 | [Energia](https://www.tamtam.ai/c/energia) (energia.ie)
A leading supplier of renewable energy in Ireland, specializing in green electricity, bio-energy, energy storage, solar, offshore wind farms, and sustainability | Utilities | ๐ฎ๐ช Navan Road | 561 | 1999 |
| 13 | [The Maxol Group](https://www.tamtam.ai/c/the-maxol-group) (maxol.ie)
A family-owned business operating a network of convenience forecourts in Ireland, providing retail fuels, wholesale fuels, convenience goods, fuel cards, and lubricants to local communities. | Retail | ๐ฎ๐ช Dublin | 479 | 1920 |
| 14 | [ESB International](https://www.tamtam.ai/c/esb-international) (esbinternational.ie)
A global engineering consultancy firm serving the utility sector, specializing in delivering large-scale projects to maximize investor returns and minimize project risk | Utilities | ๐ฎ๐ช Dublin | 413 | 1975 |
| 15 | [Flogas Ireland](https://www.tamtam.ai/c/flogas-ireland) (flogas.ie)
A leading energy supplier in the UK & Ireland, providing businesses and homes with LP Gas & Natural Gas solutions through tailored contracts | Utilities | ๐ฎ๐ช Drogheda | 387 | |
| 16 | [PrepayPower](https://www.tamtam.ai/c/prepaypower) (prepaypower.ie)
Leading provider of Pay-As-You-Go electricity and gas in Ireland, empowering customers with control, transparency, and long-term savings on their expenses | Utilities | ๐ฎ๐ช Dublin | 355 | 2010 |
| 17 | [Electric Ireland](https://www.tamtam.ai/c/electric-ireland) (electricireland.ie)
Leading energy provider in Ireland offering scalable and sustainable energy solutions for businesses, with a focus on innovation and collaboration | Utilities | ๐ฎ๐ช Dublin | 348 | |
| 18 | [Energia Group](https://www.tamtam.ai/c/energia-group) (energiagroup.com)
Integrated energy utility focusing on renewable technologies, flexible generation, and customer solutions, serving homes and businesses across Ireland. | Utilities | ๐ฎ๐ช Blanchardstown | 278 | 2019 |
| 19 | [Top Oil - Fueling Ireland](https://www.tamtam.ai/c/top-oil-fueling-ireland) (top.ie)
Family-owned Irish company in oil industry for over 200 years Delivers quality fuel products nationwide, with retail service stations and home heating oil depots | Oil and Gas | ๐ฎ๐ช Dublin 3 | 272 | |
| 20 | [Amarenco](https://www.tamtam.ai/c/amarenco) (amarencogroup.com)
Amarenco is a top renewable energy producer in Europe, specializing in large and medium-scale solar projects, working with farmers, communities, and industries | Renewable Energy Power Generation | ๐ฎ๐ช Cork | 244 | 2013 |
| 21 | [Topaz Energy Ltd](https://www.tamtam.ai/c/topaz-energy-ltd) (circlek.ie)
Leading fuel and convenience retailer in Ireland, with a network of over 420 stations, a commercial fuels business, and 2,300 employees | Retail | ๐ฎ๐ช Dublin | 152 | |
| 22 | [ePower](https://www.tamtam.ai/c/epower) (epower.ie)
Specializing in providing fully managed electric vehicle charging solutions for domestic, commercial, and public use, with fully funded options available | Appliances, Electrical, and Electronics Manufacturing | ๐ฎ๐ช Little Island | 142 | 2018 |
| 23 | [WElink Group](https://www.tamtam.ai/c/welink-group) (welink.eu)
An international provider of renewable energy and low-carbon construction solutions, specializing in energy-efficient off-site construction and mixed tenure housing solutions | Renewables & Environment | ๐ฎ๐ช Carrickmines | 83 | 2007 |
| 24 | [PSE](https://www.tamtam.ai/c/pse) (pse.ie)
A leading energy technology solutions company providing backup power generation, battery storage systems, and energy management devices for commercial and industrial applications worldwide | Construction | ๐ฎ๐ช Dublin | 77 | 1985 |
| 25 | [EZO EV Charging](https://www.tamtam.ai/c/ezo-ev-charging) (easygo.ie)
Building a connected EV community, providing access to a growing network of public charge points through a mobile app for sustainable electric travel. | Energy Technology | ๐ฎ๐ช Maynooth | 72 | 2018 |
| 26 | [NTR plc](https://www.tamtam.ai/c/ntr-plc) (ntrplc.com)
Specializes in acquiring, constructing, and managing sustainable infrastructure assets including wind, solar, bioenergy, water treatment, and recycling projects in the US and Europe | Renewables & Environment | ๐ฎ๐ช Sandyford | 69 | |
| 27 | [Joulen](https://www.tamtam.ai/c/joulen) (joulen.com)
Providing AI-driven energy optimisation services to maximise value from renewable energy systems for businesses across UK, Ireland, and Europe. | Software Development | ๐ฎ๐ช Belfast | 42 | 2017 |
| 28 | [Applegreen Fast Charge](https://www.tamtam.ai/c/applegreen-fast-charge) (applegreenfastcharge.com)
A fast-paced startup focusing on EV charging for long-range travel, driving innovation in the electric vehicle industry | Electric Power Transmission, Control, and Distribution | ๐ฎ๐ช Dublin | 36 | 2021 |
| 29 | [Verde Energy Group](https://www.tamtam.ai/c/verde-energy-group) (verdeenergygroup.com)
A leading Irish energy services company providing commercial-scale solutions in lighting, solar power, and electric vehicle charging, focused on sustainability and energy efficiency | Renewable Energy Semiconductor Manufacturing | ๐ฎ๐ช Little Island | 32 | 2009 |
| 30 | [DP Energy](https://www.tamtam.ai/c/dp-energy) (dpenergy.com)
Renewable energy and sustainable development specialist with projects worldwide, focusing on environmentally friendly and sustainable energy solutions | Renewables & Environment | ๐ฎ๐ช Buttevant | 26 | 1993 |
| 31 | [Glen Dimplex Heating & Ventilation Ireland](https://www.tamtam.ai/c/glen-dimplex-heating-and-ventilation-ireland) (glendimplexireland.com)
The company focuses on delivering sustainable comfort solutions for buildings through innovation and energy efficiency, meeting market challenges and building regulations | Appliances, Electrical, and Electronics Manufacturing | ๐ฎ๐ช Cloghran | 20 | |
| 32 | [eStation](https://www.tamtam.ai/c/estation) (estation.ie)
Specializing in Electric Vehicle Charging and Energy Management Software in Ireland, offering high-quality equipment, smart monitoring software, and dedicated support teams | Renewable Energy Semiconductor Manufacturing | ๐ฎ๐ช Dublin 16 | 13 | 2015 |
| 33 | [GEV](https://www.tamtam.ai/c/gev) (linktr.ee)
Provides state-of-the-art EV charging technology and solutions for diverse clients, simplifying charging and payment processes, and offering energy-efficient, well-designed charging infrastructure. | Renewable Energy Semiconductor Manufacturing | ๐ฎ๐ช Bray | 10 | 2017 |
| 34 | [GOcharge.ie](https://www.tamtam.ai/c/gocharge-ie) (gocharge.ie)
This company operates an electric vehicle charging network to support sustainable transportation options | Renewables & Environment | ๐ฎ๐ช Dublin | 6 | |
| 35 | [Foras](https://www.tamtam.ai/c/foras) (forasgroup.ie)
Provides sustainable fuel, energy, and waste solutions for energy-intensive industries, managing alternative fuels and recyclables for reuse and recovery. | Renewable Energy Semiconductor Manufacturing | ๐ฎ๐ช Kilkenny | 5 | 2012 |
| 36 | [EV Charging Ireland](https://www.tamtam.ai/c/ev-charging-ireland) (evchargingireland.ie)
A company specializing in sustainable energy solutions, offering smart electric vehicle chargers for homes, workplaces, commercial fleets, and destinations | Renewable Energy Semiconductor Manufacturing | ๐ฎ๐ช Dublin | 5 | 2019 |
| 37 | [Glenergy Ltd](https://www.tamtam.ai/c/glenergy-ltd) (glenergy.ie)
Energy solutions provider in Ireland offering a wide range of products including CHP, heat pumps, solar PV, and underfloor heating systems for clients' needs | Renewable Energy Semiconductor Manufacturing | ๐ฎ๐ช Kilcoole | 4 | 2014 |
| 38 | [evready](https://www.tamtam.ai/c/evready) (evready.ie)
EV charging division specializing in commercial and domestic EV solutions and renewable energy installations, ensuring safe, cost-effective, and reliable services from start to finish | Appliances, Electrical, and Electronics Manufacturing | ๐ฎ๐ช Birr | 4 | |
| 39 | [Greencoat Renewables PLC](https://www.tamtam.ai/c/greencoat-renewables-plc) (greencoat-renewables.com)
Invests in euro-denominated renewable energy infrastructure assets, focusing on large secondary markets in continental Europe to aggregate operating generation assets. | Renewables & Environment | ๐ฎ๐ช Dublin | 4 | |
| 40 | [Alumina EVC](https://www.tamtam.ai/c/alumina-evc) (aluminaevc.ie)
An Irish company specializing in supplying and installing electric vehicle chargers for home, public, and commercial sectors, with a focus on reducing carbon footprint | Motor Vehicle Manufacturing | ๐ฎ๐ช Turvey | 3 | 2018 |
| 41 | [EV Power Ireland](https://www.tamtam.ai/c/ev-power-ireland) (evpowerireland.ie)
This company enables businesses and homeowners nationwide to easily transition to electric-powered vehicles by providing top-of-the-line chargers and facilitating SEAI Grant approval | Appliances, Electrical, and Electronics Manufacturing | ๐ฎ๐ช Navan | 3 | |
| 42 | [Electric Car Charger Ireland](https://www.tamtam.ai/c/electric-car-charger-ireland) (electriccarcharger.ie)
Specialists in residential and commercial EV charger installation, offering affordable and quality solutions for electric vehicles tailored to individual needs | Construction | ๐ฎ๐ช Dublin | 3 | 2019 |
## How this list is built
Every company on this list has a Tamtam company profile. The industry is the one the company gives on LinkedIn; categories such as SaaS or fintech are classified by Tamtam's AI from the company's website and LinkedIn page; and the headquarters city must match the company's own address. Companies are ranked by the number of employees on LinkedIn, and the list is refreshed every night. Classifications can be wrong, so treat the list as a starting point rather than an official ranking. Last updated Nov 12, 2026.
## More company lists in Ireland
- [The largest companies in Ireland](https://www.tamtam.ai/l/largest-companies-ireland) (1,769)
- [Multinational companies in Ireland](https://www.tamtam.ai/l/multinational-companies-ireland) (564)
- [SaaS companies in Ireland](https://www.tamtam.ai/l/saas-companies-ireland) (203)
- [Software Development companies in Ireland](https://www.tamtam.ai/l/software-development-companies-ireland) (176)
- [Retail chains in Ireland](https://www.tamtam.ai/l/retail-chains-ireland) (166)
- [Financial services firms in Ireland](https://www.tamtam.ai/l/financial-services-firms-ireland) (143)
- [Financial Services companies in Ireland](https://www.tamtam.ai/l/financial-services-companies-ireland) (143)
- [Professional services firms in Ireland](https://www.tamtam.ai/l/professional-services-firms-ireland) (126)
- [Manufacturers in Ireland](https://www.tamtam.ai/l/manufacturers-ireland) (125)
- [Companies with in-house R&D in Ireland](https://www.tamtam.ai/l/r-and-d-companies-ireland) (120)
- [Critical infrastructure operators in Ireland](https://www.tamtam.ai/l/critical-infrastructure-operators-ireland) (118)
- [Companies with a mobile app in Ireland](https://www.tamtam.ai/l/companies-with-mobile-app-ireland) (99)
- [Public sector organisations in Ireland](https://www.tamtam.ai/l/public-sector-organisations-ireland) (88)
- [Retail companies in Ireland](https://www.tamtam.ai/l/retail-companies-ireland) (84)
- [Education providers in Ireland](https://www.tamtam.ai/l/education-companies-ireland) (83)
- [IT Services and IT Consulting companies in Ireland](https://www.tamtam.ai/l/it-services-and-it-consulting-companies-ireland) (83)
- [IT services companies in Ireland](https://www.tamtam.ai/l/it-services-companies-ireland) (77)
- [Construction companies in Ireland](https://www.tamtam.ai/l/construction-companies-ireland) (70)
- [Healthcare providers in Ireland](https://www.tamtam.ai/l/healthcare-providers-ireland) (69)
- [Consulting firms in Ireland](https://www.tamtam.ai/l/consulting-firms-ireland) (65)
- [Family-owned companies in Ireland](https://www.tamtam.ai/l/family-owned-companies-ireland) (64)
- [Distributors and wholesalers in Ireland](https://www.tamtam.ai/l/distributors-and-wholesalers-ireland) (63)
- [Subscription businesses in Ireland](https://www.tamtam.ai/l/subscription-businesses-ireland) (62)
- [Hardware manufacturers in Ireland](https://www.tamtam.ai/l/hardware-companies-ireland) (61)
## The same list elsewhere
- [Energy companies in the world](https://www.tamtam.ai/l/energy-companies-in-the-world) (10,502)
- [Energy companies in Europe](https://www.tamtam.ai/l/energy-companies-in-europe) (4,235)
---
Source: https://www.tamtam.ai/l/energy-companies-ireland