The companies listed operate in the energy sector in Victoria, Australia, with a focus on utilities and related infrastructure. Most are large corporations, several with a long history in the region, such as RACV, founded in 1903, a diverse organization offering services in hospitality, financial services, and public policy. EnergyAustralia provides sustainable energy solutions, while AusNet delivers energy services and infrastructure. AEMO operates gas and electricity markets, and CitiPower and Powercor manage electricity distribution networks.
A significant pattern among these companies is their concentration in Melbourne, which serves as the headquarters for many, including EnergyAustralia, RACV, and AEMO. This indicates a central hub for energy sector operations and management in Victoria. The list also includes companies like Greencap, a diversified corporation in home improvement and industrials, and Viva Energy Australia, focused on sustainable energy solutions.
| # | Company | Employees | |||
|---|---|---|---|---|---|
| 1 |
Greencapwesfarmers.com.au
A diversified corporation in Australia, providing goods and services in home improvement, apparel, office supplies, and industrials sectors while focusing on shareholder returns and corporate responsibility |
107,000 | |||
| 2 |
RACVracv.com.au
A diverse organization offering competitive remuneration and career opportunities in areas like hospitality, financial services, public policy, and more |
2,602 | |||
| 3 |
EnergyAustraliaenergyaustralia.com.au
A leading Australian energy company providing practical and sustainable energy solutions, including carbon neutral options, while supporting local communities and indigenous peoples |
2,286 | |||
| 4 |
AusNetausnetservices.com.au
Leading energy delivery service in Victoria with over $11 billion in assets, serving 15 million customers Engineering a sustainable future for Australia's infrastructure needs |
2,006 | |||
| 5 |
Australian Energy Market Operator (AEMO)aemo.com.au
Operate Australia's largest gas and electricity markets, provide planning, forecasting, and security advice to ensure energy reliability and security. |
1,921 | |||
| 6 |
CitiPower and Powercorpowercor.com.au
Operate electricity distribution networks serving 1.2 million customers, enabling renewable energy integration, ensuring safety, reliability, and supporting clean energy transition. |
1,752 | |||
| 7 |
ACCIONA AU & NZacciona.com.au
Global leader in sustainable infrastructure solutions with a rich history of iconic projects, offering sustainable solutions in transport, water, and energy distribution |
1,674 | |||
| 8 |
Viva Energy Australiavivaenergy.com.au
Aiming for net zero emissions by 2050, this organization supports Australia's energy needs through innovative projects for sustainable energy solutions |
1,638 | |||
| 9 |
Jemenajemena.com.au
Provider of gas and electricity services with over a century of experience, supplying essential energy to millions of households and businesses |
1,560 | |||
| 10 |
Dodo Servicesdodo.com
Provider of telecommunications, energy, and insurance services focused on competitive pricing, customer choice, and delivering great value in Australia. |
1,526 | |||
| 11 |
Zinfrazinfra.com.au
Zinfra is a leading delivery partner in Australia's energy infrastructure sector, providing engineering, project management, construction, and maintenance services with a focus on inclusivity and diversity |
1,348 | |||
| 12 |
Promanproman.org
A diversified energy producer with production assets in the US, Trinidad, and Oman, specializing in methanol, fertilizer, and natural gas |
1,009 | |||
| 13 |
Red Energyredenergy.com.au
Australian energy company providing affordable, personal, and simple energy solutions with local customer support and over 1200 employees. |
847 | |||
Want more companies than this list?This page shows the largest ones only. Connect to Tamtam to see every company that matches, filter by size, industry or growth, and reach their decision-makers. | |||||
| 14 |
Cummins Asia Pacificcummins.com
Global power technology leader providing a broad range of power solutions including internal combustion, electric/hybrid power systems, components, and control systems worldwide |
535 | |||
| 15 |
Syrah Resources Ltdsyrahresources.com.au
This company is an industrial minerals and technology company focusing on graphite production in Mozambique and anode material production in the United States |
367 | |||
| 16 |
ENGIE AUengie.com.au
Leader in low carbon generation, energy infrastructures, and efficient solutions worldwide Operates renewable and gas-fired plants, and retail business in Australia |
351 | |||
| 17 |
Sunrun Solarsunrunsolar.com.au
An Australian company offering affordable PV solar systems for residential and commercial clients, providing guidance from purchase to installation for energy savings and environmental benefits |
350 | |||
| 18 |
Wilson Transformer Companywtc.com.au
Leading specialist in transformer solutions since 1933, offering a wide range of power and distribution transformers, control solutions, and support services worldwide Built smart for life |
316 | |||
| 19 |
Pacific Blue Australiapacificblue.com.au
A leading renewable energy company in Australia, generating clean energy from wind, solar, and hydro while giving back to local and indigenous communities |
236 | |||
| 20 |
Petrogaspetrogas.com.au
Supplier of bulk fuel, storage equipment, lubricants, and exhaust fluid, offering complete petroleum solutions throughout the East Coast of Australia |
229 | |||
| 21 |
Simply Energysimplyenergy.com.au
A provider of smart electricity and gas solutions in Australia, committed to making energy simple, affordable, and sustainable through innovation and partnerships |
184 | |||
| 22 |
Beon Energy Solutionsbeon-es.com.au
Energy solutions company offering end-to-end services for utility, commercial, and residential customers, specializing in safety, reliability, and technical expertise Contact for more information |
181 | |||
| 23 |
JET Chargejetcharge.com.au
Supplier and installer of electric vehicle charging infrastructure in Australia, working with major car brands and serving diverse clients from households to corporations |
143 | |||
| 24 |
Proton Techprotontech.com.au
The company specializes in providing green energy solutions using hydrogen as the main energy carrier for mobile and stationary applications |
7 | |||
| 25 |
ENGVcirrena.com
A leading provider of hydrogen, natural gas, biomethane, and LPG equipment and services, specializing in turnkey green hydrogen production and refueling facilities |
6 | |||
| 26 |
Hydrogen Systems Australia Pty Ltdhydrogensystems.com.au
Innovative team developing and deploying Green Hydrogen-based renewable energy systems to remove diesel and fossil fuels for a cleaner, greener future |
3 | |||
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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 Nov 12, 2026.
More company lists in Victoria
- The largest companies in Victoria 1,682
- Multinational companies in Victoria 378
- Retail chains in Victoria 202
- Education providers in Victoria 128
- Financial services firms in Victoria 128
- Critical infrastructure operators in Victoria 123
- Professional services firms in Victoria 121
- Healthcare providers in Victoria 116
- Financial Services companies in Victoria 109
- Companies with a mobile app in Victoria 99
- Manufacturers in Victoria 99
- E-commerce companies in Victoria 98
- Public sector organisations in Victoria 97
- Retail companies in Victoria 96
- Corporate groups and holding companies in Victoria 89
- Publicly traded companies in Victoria 89
- Hospitals and Health Care companies in Victoria 87
- Government Administration companies in Victoria 81
- IT Services and IT Consulting companies in Victoria 76
- Companies with in-house R&D in Victoria 75
- Consulting firms in Victoria 69
- Subscription businesses in Victoria 58
- Education Administration Programs companies in Victoria 56
- Non-profit Organizations companies in Victoria 56
The same list elsewhere in Australia
- Energy companies in Australia 126
- Energy companies in New South Wales 31
- Energy companies in Queensland 25