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List of energy companies in Lombardy

Tamtam tracks 56 energy companies headquartered in Lombardy. This list ranks all of them by number of employees on LinkedIn, led by Saipem, Prysmian and A2A. Their median headcount is 612. Half of them were founded in 1983 or later. The most common headquarters are Milan (34).

馃嚠馃嚬 Lombardy56 companiesUpdated Oct 24, 2026
#CompanyIndustryHeadquarters EmployeesFounded
1
Saipemsaipem.com

Global leader in engineering and construction for energy and infrastructure projects worldwide, offering offshore and onshore services with a focus on sustainability and innovation

Engineering Services 馃嚠馃嚬 Milan 32,000 1957
2
Prysmianprysmian.com

A global leader in high-tech cables & systems for energy and telecom, driving the energy transition and digitalization worldwide

Manufacturing 馃嚠馃嚬 Milan 28,000 1872
3
A2Agruppoa2a.it

A company in Italy focused on environment, water, and energy, promoting circular economy and sustainable development goals through various services and operations

Utilities 馃嚠馃嚬 Milan 5,026 2008
4
Edisonedison.it

Leading energy company with 140 years history, operating in renewable production, gas supply, sustainable mobility, and energy services across Europe.

Utilities 馃嚠馃嚬 Milan 4,174 1884
5
Fastwebfastweb.it

A leading Italian telecommunications operator promoting digital transformation for a connected, inclusive, and sustainable future, investing in ultra-broadband networks and innovative services

Telecommunications 馃嚠馃嚬 Milan 4,033 1999
6
MAIREgroupmaire.com

A technology and engineering group focused on enabling the Energy Transition, offering Sustainable Technology and E&C Solutions in various sectors worldwide

Engineering Services 馃嚠馃嚬 Milan 3,897 2005
7
Italgasitalgas.it

A leading Network Tech Company in gas, water, energy efficiency, and IT sectors, providing services to millions of customers in Italy and Greece

Utilities 馃嚠馃嚬 Milan 3,661 n/a
8
TESYA Grouptesya.com

The TESYA Group offers cutting-edge integrated solutions through collaboration between top brands, providing advanced customized solutions in various industries internationally

Machinery Manufacturing 馃嚠馃嚬 Vimodrone 3,402 n/a
9
Snam S.p.A.snam.it

Leading European company specializing in natural gas transport, storage, and regasification services across multiple infrastructures and markets.

Utilities 馃嚠馃嚬 Milan 3,337 1941
10
Fastweb + Vodafonefastwebvodafone.it

Integration of fixed and mobile networks to provide innovative, competitive digital services for families, businesses, and national digital transformation.

Telecommunications 馃嚠馃嚬 Milan 2,367 2025
11
SOL Groupsolgroup.com

Italian multinational company specializing in production, research, and sale of gases, home care services, biotech products, and renewable energy, listed on Milan Stock Exchange

Chemical Manufacturing 馃嚠馃嚬 Monza 2,188 1927
12
Nidec Conversionnidec-conversion.com

A company specializing in power control and system solutions, offering tailored electric drive systems for various industries worldwide Headquarters in Milan, Italy

Electrical Equipment Manufacturing 馃嚠馃嚬 Cinisello Balsamo 1,606 1899
13
The SIAD Groupthesiadgroup.com

A leading Italian chemical group offering industrial gases, engineering services, healthcare facilities, LPG and natural gas distribution, environmental management, and energy solutions

Chemical Manufacturing 馃嚠馃嚬 Bergamo 1,559 1927
14
Siram Veoliaveolia.it

Provides integrated energy efficiency, water cycle management, and special waste services for public and private sectors to reduce emissions and resource waste.

Environmental Services 馃嚠馃嚬 Milan 1,497 n/a
15
ENGIE Italiaengie.it

Global leader in low-carbon energy and services, focusing on reducing energy consumption and promoting environmentally friendly solutions for sustainable progress.

Utilities 馃嚠馃嚬 Milan 1,419 2010
16
Gewissgewiss.com

Manufacturer of home & building automation solutions, energy distribution systems, smart lighting, and e-mobility products Recently acquired a leading lighting company Operating globally

Appliances, Electrical, and Electronics Manufacturing 馃嚠馃嚬 Cenate Sotto 1,324 1970
17
De Noradenora.com

A multinational company specializing in electrochemistry and sustainable technologies, leading in industrial green hydrogen production, water treatment, and energy efficiency optimization

Industrial Machinery Manufacturing 馃嚠馃嚬 Milan 1,267 1923
18
FIMER S.p.A.fimer.com

A global leader in solar inverters and mobility systems, offering comprehensive solutions with a strong focus on R&D and customer-centric approach

Machinery Manufacturing 馃嚠馃嚬 Vimercate 1,204 1942
19
Edison Nextedisonnext.it

The company focuses on caring for customers and territories through eco-friendly and decarbonization solutions, promoting innovation and sustainable growth

Services for Renewable Energy 馃嚠馃嚬 Milan 1,170 n/a
20
Gruppo AB - Energy Sustainabilitygruppoab.com

AB specializes in energy sustainability solutions, offering innovative technologies and processes to help customers save energy, reduce emissions, and improve competitiveness globally

Oil and Gas 馃嚠馃嚬 Orzinuovi 1,154 1981
21
ContourGlobalcontourglobal.com

Global power generation company focused on developing and operating clean energy assets worldwide to create economic and social value in local communities

Electric Power Generation 馃嚠馃嚬 Milan 1,134 2005
22
Sarassaras.it

A leading independent energy operator in Europe, specializing in oil refining, electricity production, renewable energy, and innovative projects for carbon reduction and sustainability

Oil and Gas 馃嚠馃嚬 Milan 1,020 n/a
23
EGLA - EuroGroup Laminationseglagroup.com

A global leader in producing stators and rotors for various industries, providing efficient and sustainable solutions for the energy transition

Industrial Machinery Manufacturing 馃嚠馃嚬 Baranzate 959 n/a
24
Unaretiunareti.it

The company focuses on integrated distribution of electricity and gas services, aiming for flexible resource utilization and improved services through technological development

Utilities 馃嚠馃嚬 Brescia 709 n/a
25
KEMA Labscesi.it

A global leader in testing, inspection, and certification for power industry equipment, utilizing top-of-the-line facilities to meet demanding performance and safety standards

Energy Technology 馃嚠馃嚬 Milan 697 n/a
26
Sorgeniasorgenia.it

A leading energy provider in Italy, offering electricity, natural gas, and sustainable energy solutions through a flexible production model and digital technologies for a smooth customer experience

Utilities 馃嚠馃嚬 Milan 691 1999
27
Tamoil Italia S.p.A.tamoil.it

An oil company operating in Italy, focused on supply, logistics, distribution of petroleum products, and retailing, with a commitment to economic and social development

Oil and Gas 馃嚠馃嚬 Milan 690 1954
28
SIAD S.p.A.siad.com

Italian chemical group providing technical gases, engineering services, healthcare solutions, LPG and natural gas distribution, as well as environmental management and industrial goods

Chemical Manufacturing 馃嚠馃嚬 Bergamo 612 1927
29
Repower Italiarepower.com

A Swiss-based energy producer from renewable sources, operating in Switzerland and Italy, offering electricity, green energy, natural gas, and energy services

Utilities 馃嚠馃嚬 Milan 571 1904
30
LTC Group | Legnano Teknoelectric Co. | Manufacturer of magnetic cores for transformers & reactorsltc-group.com

A leader in magnetic core production for transformers and reactors, utilizing R&D for high-quality, high-performance solutions globally for 65 years

Appliances, Electrical, and Electronics Manufacturing 馃嚠馃嚬 Legnano 565 1983
31
Gruppo CAPgruppocap.it

This company manages the integrated water service in multiple areas, ensuring public control and transparency while investing in infrastructure and IT tools

Utilities 馃嚠馃嚬 Milan 464 1928
32
NHOA Energynhoa.energy

Leader in designing and delivering energy storage systems, transforming renewable energy into sustainable 24/7 power sources worldwide Operating for almost 20 years

Electric Power Transmission, Control, and Distribution 馃嚠馃嚬 Milan 312 2005
33
SCAME Italiascame.com

Manufactures electrical components and systems for civil, services, and industrial use, including electric vehicle charging solutions and products for hazardous areas.

Appliances, Electrical, and Electronics Manufacturing 馃嚠馃嚬 Parre 253 1963
34
Atlanteatlante.energy

Develops and operates fast and ultra-fast electric vehicle charging stations, powered by 100% green energy, primarily across Southern Europe.

Facilities Services 馃嚠馃嚬 Milan 239 2021
35
Arkad SpAarkadspa.com

With nearly 60 years of experience, this Engineering & Contracting Company offers comprehensive solutions for Energy Industries globally, specializing in Energy Transition projects

Oil and Gas 馃嚠馃嚬 Sesto San Giovanni 223 1960
36
Edilkaminedilkamin.com

A leading stove and fireplace company with 60 years of experience, state-of-the-art design, and a strong presence in Italy and Europe

Renewable Energy Power Generation 馃嚠馃嚬 Lainate 151 n/a
37
Nooter/Eriksen Milancicgroup.com

Global leader in supplying custom-designed Heat Recovery Steam Generators (HRSGs) and specialized heat recovery systems tailored to meet individual customer needs

Oil and Gas 馃嚠馃嚬 Cardano al Campo 148 2005
38
SIEL S.p.A.sielups.com

A holding company specializing in renewable energy technologies, offering quality products and services, tailored energy solutions, and expert consulting for various industries

Appliances, Electrical, and Electronics Manufacturing 馃嚠馃嚬 Trezzano Rosa 146 1983
39
Be Powerbepower.com

High-tech company transforming energy sector, integrating energy with mobility via digital flows, developing electric vehicle charging networks and managing energy purchasing.

Utilities 馃嚠馃嚬 Milan 121 2017
40
algoWattalgowatt.com

The company is a system integrator in the renewable energy sector, specializing in photovoltaic systems with turnkey solutions and energy production

Software Development 馃嚠馃嚬 Milan 113 2005
41
Dazedaze.eu

Develops automatic conductive charging systems and smart wallboxes for electric vehicles in private and public sectors, focusing on design and ease of use.

Appliances, Electrical, and Electronics Manufacturing 馃嚠馃嚬 Almenno San Bartolomeo 109 2016
42
RECOM TECHNOLOGIESrecom-tech.com

manufacturer of high-efficiency photovoltaic modules, inverters, hybrid storage, batteries, and EV chargers for comprehensive solar energy solutions

Renewable Energy Semiconductor Manufacturing 馃嚠馃嚬 Milan 94 2007
43
Free2move eSolutionsesolutions.free2move.com

A joint venture focused on designing, manufacturing, and supplying innovative e-mobility products and services worldwide to reduce CO2 emissions

Appliances, Electrical, and Electronics Manufacturing 馃嚠馃嚬 Milan 81 n/a
44
Bosch Energy and Building Solutions Italyboschbuildingsolutions.it

Energy and Building Solutions division offers integrated projects for safer, efficient, and comfortable buildings with cutting-edge technologies for energy, security, and connectivity

Renewables & Environment 馃嚠馃嚬 Milan 78 2013
45
ELCOS POWER GENERATORSelcospowergenerators.com

Design and produce electric power generation systems for emergency, self-production, and cogeneration, serving international markets with Italian quality.

Appliances, Electrical, and Electronics Manufacturing 馃嚠馃嚬 Grumello Cremonese ed Uniti 57 1975
46
Be Chargebec.energy

Develops Italy's extensive public infrastructure for electric vehicles, operating as both a CPO and EMSP to grow electric mobility nationwide.

Utilities 馃嚠馃嚬 Milan 45 2017
47
Hydroalphydroalp.com

Hydroalp specializes in constructing hydroelectric turbines, hydropower plants, green hydrogen facilities, photovoltaic systems, and modular skid systems for various sectors

Industrial Machinery Manufacturing 馃嚠馃嚬 Costa Volpino 43 2014
48
EDP Energia Italiaedpenergia.it

Global energy company operating across 4 continents and 20 countries, providing electricity, gas, and innovative solutions for businesses to enhance energy efficiency and use renewable sources

Utilities 馃嚠馃嚬 Milan 40 2019
49
ISG SpAisgspa.it

A leading company serving international clients in the Oil & Gas industry by supplying Process Systems for Gas and Liquid Hydrocarbons treatment

Oil and Gas 馃嚠馃嚬 Baranzate 38 1951
50
ReFeelrefeel.eu

An integrated network of energy companies providing green and innovative solutions worldwide for sustainable development through carbon-free energy production and distribution

Services for Renewable Energy 馃嚠馃嚬 Milan 37 2007
51
Ewivaewiva.com

Building Italy's largest ultra-fast electric vehicle charging network, available nationwide for all electric vehicles in urban, suburban, and extra-urban areas.

Facilities Services 馃嚠馃嚬 Milan 35 2021
52
FastWayfastway.energy

Develops a nationwide fast and ultra-fast electric vehicle charging network to accelerate decarbonization and transition to sustainable mobility for all.

Utilities 馃嚠馃嚬 Milan 30 n/a
53
RBR Valvole Srlrbrvalves.com

Manufacturing high-quality ball valves for industrial applications, including compact wafer and trunnion mounted designs, favored by leading Oil and Engineering Companies globally

Oil and Gas 馃嚠馃嚬 Pogliano Milanese 26 1964
54
Engie Program s.r.l.engie.it

The company offers facility management, energy efficiency, requalification of sports facilities, and installation of various systems in the sports sector

Spectator Sports 馃嚠馃嚬 Milan 20 2017
55
Theia Investments (acquired by Stafford Capital Partners)theia.energy

Holding company acquiring, managing European renewable energy assets, focusing on operational and financial optimization with institutional investor backing.

Investment Management 馃嚠馃嚬 Milan 6 n/a
56
Gas Pi霉 luce e gasgaspiu.it

Customized sustainable energy solutions tailored to your needs We are the energy of your territory

Oil and Gas 馃嚠馃嚬 Melegnano 6 n/a

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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 Oct 24, 2026.

More company lists in Lombardy

The same list elsewhere in Italy