Best Energy Companies in Seoul, South Korea
The 69 best Energy companies in Seoul, South Korea in 2026, ranked by funding and momentum. Funding, investors, founders, valuation, tech stack and live signals. Top: Hyundai Oilbank.
Our analysis of 441 Energy companies
$135.1b in tracked funding; 76% of the stack-profiled cohort runs cloud-native; funding activity peaked in 2025.
Ranked: Best Energy companies in Seoul
| # | Company | Disclosed funding | Last round | Stage | Founder | Founded | Tech stack | Patents & IP focus | Recent signals |
|---|---|---|---|---|---|---|---|---|---|
| 1 | Hyundai Oilbank Petroleum and petroleum products production and distribution company | $1.2B | 78 mo ago | Late Stage | Gangdongho CEO & President | 1964 | JavaStimulusRequireJS+10 | 104 patents Ammonia dehydrogenation catalysts for hydrogen and advanced anion‑exchange membranes for fuel cells | — |
| 2 | Brite Energy Partners Provider of solar panel installation services | $234M | 41 mo ago | Series D | Brian Kim Founder & CEO | 2017 | — | — | — |
| 3 | ENlighten Provider of solar energy services for homes | $21M | 5 mo ago | Series B | Youngho Lee CEO | 2016 | Node.jsMUIEnvoy+20 | 13 patents Solar PV forecasting, anomaly detection, and V2G‑enabled demand management systems | — |
| 4 | Solivis Manufacturer of batteries | $15M | 16 mo ago | Series B | Dong Shin CEO | 2020 | PHPGSAPApache HTTP Server+6 | 37 patents Patents concentrated in electrical & electronics | — |
| 5 | Nao Technologies Manufacturer of switching mode power supplies, serving various industries including measurement instruments… | $13M | 26 mo ago | Series A | Lim Deuk-sun CEO | 2000 | — | — | — |
| 6 | SK Innovation Provider of oil & gas refining and trading services | — | 8 mo ago | Public | Ja Koo CEO | 1962 | JavaAmazon ALBAmazon Web Services+7 | 7,922 patents Lithium‑ion battery electrode materials and recycling‑derived hydrocarbon processes | — |
| 7 | InUps Provider of energy services | — | 29 mo ago | Seed | Kang In-Cheol CEO | 2018 | — | — | — |
| 8 | Daemyoung Energy Provider of energy solutions offering a range of services including site assessment, engineering… | — | 36 mo ago | Public | — | 2021 | PHPVuetifyVue.js+15 | — | — |
Top 11 Energy companies in Seoul
#1
Series B · Seoul, Seoul · founded 2016 · 74 employees$20.8Mraised▾
Provider of solar energy services for homes
- Jan 2026Series B$20.8M
#2
Series B · Seoul, Seoul · founded 2020$15Mraised▾
Manufacturer of solid-state batteries designed for next-generation battery packs. The company's product is an all-solid-state battery that can be used as a secondary battery for electric vehicles and it has developed a wet synthesis method that can mass-produce a sulfide-based solid electrolyte with homogeneous high ionic conductivity, enabling clients to significantly improve productivity by reducing process costs and shortening the synthesis time.
- Feb 2025Series B$9.5M
- Mar 2024Series B$15M
- 2021Series A—
#3
Series D · Seoul, Seoul · founded 2017$233.7Mraised▾
Provider of solar panel installation services
- Dec 2022Series D$133.7M
- Aug 2021Series D$100M
#4
Late Stage · Seoul, Seoul · founded 1964$1.2Braised▾
Hyundai Oilbank produces and distributes petroleum and petrochemical products in South Korea. Offers various products including gasoline, diesel, kerosene, fuel oil, liquefied petroleum gas, jet fuel, naphtha, benzene, toluene, p-xylene, propylene, alkylate, mixed xylene, asphalt, lube base oil, lubricants, and carbon black. The company also engages in the refining and marketing of petroleum products and operates 2,318 gas stations under the Oilbank brand. The company exports its products to Australia, New Zealand, Singapore, Vietnam, China, the Netherlands, Taiwan, Malaysia, the Philippines, Hong Kong, Japan, the United States, South Africa, and more.
#5
Series A · Seoul, Seoul · founded 2000$13.3Mraised▾
Nao Technologies Co., Ltd. is a leading manufacturer of switching mode power supplies, serving various industries including measurement instruments, chemicals, and more. The company provides a range of high-quality power solutions, including test instruments and power supplies, to ensure reliable and efficient performance. With a focus on innovation and customer satisfaction, Nao Technologies has established itself as a trusted partner for businesses seeking reliable and efficient power solutions.
- Apr 2024Series A$13.3M
#6
Public · Seoul, Seoul · founded 1962 · 6517 employees—raised▾
In 2022, the company recorded annual revenues of $61.8B and a net profit of $0.55B.
#7
Seed · Seoul, Seoul · founded 2018 · 12 employees—raised▾
Provider of energy services
- Jan 2024Seed—
#8
Public · Seoul, Seoul · founded 2021 · 49 employees—raised▾
Daemyoung Energy is a South Korean company that provides a range of solutions for the energy industry, including site assessment, engineering, procurement, and construction (EPC) services. The company's products and services cater to the needs of the alternative power generation sector. Founded in 1981, Daemyoung Energy has a significant presence in the Korean market and has been listed on the KRX stock exchange since 2000.
- 2023Post IPO—
#9
Seed · Seoul, Seoul · founded 2016—raised▾
Supplier of water
- Oct 2020Seed—
#10
Deadpooled · Seoul, Seoul · founded 1999—raised▾
Developer of wind energy projects
#11
Public · Seoul, Seoul · founded 1952 · 757 employees—raised▾
Manufacturer of solar cells, modules, and other related components. It provides is involved in the production of explosives for the defense and construction industries, automotive airbag inflators, telecommunication equipment, and financial services. It also manufacturers and suppliers of petrochemical products. In 2022, the company recorded annual revenues of $48.2B and a net profit of $1.02B.
Funding & investor landscape
Notable founders
Market landscape — 10 sub-themes by coverage
Share of Energy coverage by sub-theme.
Regulatory-risk over time rising
Funding & growth over time
funding rising · growth rising
How research on Energy Storage in Seoul is moving
A read on the academic research around Energy Storage in Seoul — which themes are gaining ground, the institutions and researchers driving them, and how the tone is shifting. Based on 104 papers.
- Seoul National University75
- Seoul National University of Science and Technology22
- University of Seoul6
- Seoul National University of Education3
- The Seoul Institute2
- Battery (electricity)3→8
- Electrochemistry3→7
- Aqueous solution1→4
- Cathode1→4
- Anode2→4
- Electrolyte2→7
- Battery (electricity)5→8
- Anode2→4
- Electrochemistry1→3
- Nanotechnology2→3
- Electrolyte2→8
- Anode1→4
- Electrochemistry2→5
- Battery (electricity)2→5
- Lithium (medication)2→5
Common questions
Riya reads income statements for fun. She covers the real money in a sector — revenue, growth, who actually earns — and never met a vague claim she didn't want a number for.