Best Energy Tech Companies in Gyeonggi-do, South Korea
The 33 best Energy Tech companies in Gyeonggi-do, South Korea in 2026, ranked by funding and momentum. Funding, investors, founders, valuation, tech stack and live signals. Top: NanoCamp.
Our analysis of 287 Energy Tech companies
$109.4b in tracked funding; 82% of the stack-profiled cohort runs cloud-native; funding activity peaked in 2025.
Ranked: Best Energy Tech companies in Gyeonggi-do
| # | Company | Disclosed funding | Last round | Stage | Founder | Founded | Tech stack | Patents & IP focus | Recent signals |
|---|---|---|---|---|---|---|---|---|---|
| 1 | NanoCamp Sulfide-based solid electrolytes | $20M | 35 mo ago | Series B | — | 2022 | — | — | — |
| 2 | EVAR Manufacturer of mobile and stationary electric vehicle chargers | $16M | 39 mo ago | Series B | Lee Hun CEO | 2018 | WixSentryBootstrap+10 | 72 patents Advanced EV charging hardware, autonomous mobile chargers, and multi‑battery power management | — |
| 3 | APgreen Developer of modular clean hydrogen generators utilizing non-thermal plasma technology | — | 5 mo ago | Funding Raised | Taeyoon Park Chief Executive Officer | 2022 | — | 10 patents Hydrogen production technologies with integrated low‑emission carbon capture and polymerization | — |
| 4 | Kokam Developer of lithium polymer based energy storage solutions | — | 184 mo ago | Acquired | Choong-Yeon Chong CEO & President | 1989 | — | 187 patents Modular lithium‑ion battery packs with integrated fault protection, connectors, and advanced anode materials | — |
| 5 | BEI Lab Developer of lithium metal batteries for electric vehicles and military | — | — | Funding Raised | Josiah Bae Co-Founder & CEO | 2018 | — | — | — |
| 6 | Castpro Provider of electric charger | — | — | Unfunded | Lee Jae-ho Founder & CEO | 2014 | — | 13 patents EV charging hardware, charger enclosures, maintenance services, and related charging software solutions | — |
| 7 | Checktap Smart power cord-based power management solution provider | — | — | Deadpooled | Jeongsoo Lee CEO & President | 2001 | — | — | — |
| 8 | Corinergy Solutions Developer of batteries for electric cars | — | — | Unfunded | Young-Jun Kim CEO | 2021 | — | — | — |
Top 4 Energy Tech companies in Gyeonggi-do
#1
Series B · Gwangmyeong, Gyeonggi-do · founded 2022 · 6 employees$20.1Mraised▾
Sulfide-based solid electrolytes. It specializes in developing sulfide electrolyte with good stability.
- Nov 2023Series B—
- 2023Series A—
#2
Series B · Seongnam-si, Gyeonggi-do · founded 2018 · 60 employees$16Mraised▾
Manufacturer of mobile and stationary electric vehicle chargers. The company designs and produces charging solutions for electric vehicles, offering both portable and fixed charging units. These chargers are designed for ease of use and reliability, supporting the growing demand for convenient electric vehicle charging infrastructure. The focus is on providing high-quality, efficient charging technology.
- Jul 2023Series B$16M
- Oct 2019Seed—
#3
Funding Raised · Ansan-si, Gyeonggi-do · founded 2022 · 8 employees—raised▾
Developer of modular clean hydrogen generators utilizing non-thermal plasma technology. The company’s generators convert hydrocarbon gas into hydrogen through methane pyrolysis and partial oxidation. The technology employs a dielectric barrier discharge non-thermal plasma reactor. The generators are designed for onsite hydrogen production with little to no carbon dioxide generation.
- May 2026Grant (prize money)—
#4
Acquired · Suwon-si, Gyeonggi-do · founded 1989 · 109 employees—raised▾
Developer of lithium polymer based energy storage solutions. It focus in manufacturing of polymer processing equipment, including polyester film and polarized film manufacturing systems, and breathable film casting systems.
Funding & investor landscape
Market landscape — 10 sub-themes by coverage
Share of Energy Tech coverage by sub-theme.
Regulatory-risk over time rising
Funding & growth over time
funding rising · growth rising
How research on Grid Energy Storage is moving in South Korea
A read on the academic research around Grid Energy Storage — which themes are gaining ground, the institutions and researchers driving them, and how the tone is shifting. Based on 1,809 South Korea-affiliated papers.
- Ministry of Education193
- Hanyang University141
- Yeungnam University115
- Korea Advanced Institute of Science and Technology104
- Sungkyunkwan University101
- Electrolyte12→140
- Electrochemistry11→136
- Anode7→129
- Supercapacitor19→139
- Electrode14→124
- Supercapacitor12→133
- Electrochemistry10→113
- Battery (electricity)9→101
- Electrolyte5→88
- Cathode3→84
- Electrolyte5→48
- Anode3→40
- Battery (electricity)6→42
- Cathode1→37
- Electrochemistry3→34
Where energy storage is researched across South Korea
Location clusters by institution affiliation — each city's volume, stance tone, and a quick read on its hot topic, what's advancing, the opening opportunity, and the main concern.
Who's filing energy storage patents in South Korea
South Korea energy storage patent filing is accelerating — 4,360 filings from 1,226 assignees (2016–2025), led by LG Energy Solution, Samsung, LG Chemical; annual filings 357→650.
- LG Energy Solution823
- Samsung719
- LG Chemical329
- Lotte Chemical184
- Korea Electric Power183
- LG Electronics154
- LSIS134
- LS Mtron113
Common questions
Rohit lives in the feed. He covers what's moving right now — the funding rounds, launches and shifts breaking across the trade press — and ties them back to where the sector is heading.