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List of energy companies in Milan

Tamtam tracks 34 energy companies headquartered in Milan. This list ranks all of them by number of employees on LinkedIn, led by Saipem, Prysmian and A2A. Their median headcount is 691. Half of them were founded in 2005 or later.

馃嚠馃嚬 Milan34 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
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
9
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
10
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
11
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
12
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
13
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
14
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
15
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
16
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
17
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
18
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
19
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
20
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
21
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
22
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
23
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
24
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
25
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
26
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
27
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
28
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
29
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
30
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
31
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
32
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
33
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
34
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

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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 Milan

The same list elsewhere in Italy