Best Energy Efficiency Tech Companies in South Korea
The 64 best Energy Efficiency Tech companies in South Korea in 2026, ranked by funding and momentum. Funding, investors, founders, valuation, tech stack and live signals. Top: Encored Technologies.
Our analysis of 50 Energy Efficiency Tech companies
$7.8b in tracked funding; 86% of the stack-profiled cohort runs cloud-native; funding activity peaked in 2025.
Ranked: Best Energy Efficiency Tech companies in South Korea
| # | Company | Disclosed funding | Last round | Stage | Founder | Founded | Tech stack | Patents & IP focus | Recent signals |
|---|---|---|---|---|---|---|---|---|---|
| 1 | Encored Technologies AI and cloud-driven platform offering demand response management solutions | $17M | 126 mo ago | Series B | John Choe Founder & CEO | 2013 | Node.jsTailwind CSSReact+9 | 26 patents Predictive load management for EV charging stations and cloud‑based microgrid optimization. | — |
| 2 | Ready Robust Machine Smart energy recovery system | $7M | 22 mo ago | Series A | — | 2021 | GnuboardMySQLPHP+11 | — | — |
| 3 | Korea Spatial Data Offers an AI-integrated digital twins for managing physical spaces | $3M | 30 mo ago | Series B | Hyunwoo Kim Co-Founder & CEO | 2018 | — | — | — |
| 4 | Realizable Provider of AI & web-enabled facility management solutions for factories | — | 7 mo ago | Seed | Won Dong-myeong Founder | 2022 | — | 2 patents Cloud-based SaaS platforms for factory energy monitoring and lease‑factory management | — |
| 5 | Soft-EPI Provider of full-service legal counsel to domestic and international clients | — | 40 mo ago | Series B | Sung Hwang CEO | 2012 | — | 55 patents III‑nitride red LED devices and related manufacturing and testing processes | — |
| 6 | Corners IoT based solution provider for building evacuation and customer experience management | — | 98 mo ago | Series B | Tony Kim CEO | 2014 | — | 43 patents Robotic emergency evacuation guidance, crowd congestion analysis, and digital‑twin space monitoring. | — |
| 7 | APACK Provider of LED lighting solution | — | — | Unfunded | — | 1999 | — | 77 patents Integrated controlled-environment agriculture systems: lighting, sensor, and automation technologies. | — |
| 8 | Apex Intec Manufacturer of smart lighting products | — | — | Public | — | 1997 | — | 76 patents Patents concentrated in electrical & electronics | — |
Top 6 Energy Efficiency Tech companies in South Korea
#1
Series A · Gimhae si, South Gyeongsang Province · founded 2021 · 6 employees$6.9Mraised▾
Smart energy recovery system. The smart energy recovery system READiX is a product that recovers the energy of the boom, where the most energy is wasted in the operation of the excavator, and reuses it as a power source. It also reduces carbon emissions by reducing the amount of diesel used during the same work.
- Aug 2024Series A$5.6M
- Oct 2022Seed$1.4M
#2
Series B · Seoul, Seoul · founded 2018 · 72 employees$3.1Mraised▾
Offers an AI-integrated digital twins for managing physical spaces. The company offers digital twins for running simulations to identify and manage issues in spaces. It enables users to monitor and manage the maintenance and development of infrastructure. It also provides energy management solutions for buildings.
- Dec 2023Series B$3.1M
- Oct 2022Series A—
#3
Series B · Seoul, Seoul · founded 2013 · 49 employees$16.8Mraised▾
AI and cloud-driven platform offering demand response management solutions. It offers energy-saving solutions to enable users to optimize and save electricity. It provides Enertalk - an internet-connected energy meter to track energy usage in the house. The data tracked is displayed to the consumer via the app. Additionally, it provides forecasting solutions, disaggregation solutions, solar PV load optimization solutions, and more. Its app is available for Android devices.
- Dec 2015Series B$10M
- Oct 2014Series A$6.3M
#4
Seed · Incheon, Incheon · founded 2022—raised▾
Provider of AI & web-enabled facility management solutions for factories. The company specializes in offering solutions for managing factory rentals and building maintenance. It offers solutions for managing electric bills, lease management, and schedule management.
- Nov 2025Seed—
#5
Series B · Yongin si, Gyeonggi do · founded 2012—raised▾
Provider of full-service legal counsel to domestic and international clients. This firm offers legal services and solutions across various practice areas, including corporate law, commercial law, intellectual property, and litigation. The firm assists businesses and individuals with a wide array of legal matters, from company formation and mergers and acquisitions to employment disputes and family law. Legal advice is tailored to meet specific client needs, focusing on achieving successful outcomes. The firm's lawyers possess extensive experience and expertise in their respective fields.
- Feb 2023Series B—
- Aug 2015Series A—
#6
Series B · Seoul, Seoul · founded 2014 · 39 employees—raised▾
Corners offers an Internet of Things enabled evacuation guidance solution for buildings. The solution consists of IoT stations and a web-based portal. The IoT stations are sensors (wall-mounted sensors, mobile sensors, projection lights, and LoRa controllers) that measure multiple parameters such as heat, temperature, humidity, flame, gas, and illumination. The stations are also capable of understanding the disaster situation and sending the information regarding the same to the gateway. The web-based portal helps the user visualize the problem and prevent the same. The company claims that the solution features safe evacuation routing algorithm that helps in real-time evacuation path calculation, creating hazardous areas avoidance, and predicting bottlenecks. In addition, the company also offers IoT based theme park customer experience management solution. Clientele includes Government of Korea, Busan Transportation Corporation, Korea Railway Authority, SK Hynix, Lotte Department Store, Everland, Korean Rally etc.
- Apr 2018Series B—
Funding & investor landscape
Notable founders
Market landscape — 10 sub-themes by coverage
Share of Energy Efficiency Tech coverage by sub-theme.
Regulatory-risk over time rising
Funding & growth over time
funding rising · growth rising
How research on Energy Efficiency & Buildings is moving in South Korea
A read on the academic research around Energy Efficiency & Buildings — which themes are gaining ground, the institutions and researchers driving them, and how the tone is shifting. Based on 835 South Korea-affiliated papers.
- Korea Institute of Energy Research53
- Pusan National University47
- Hanbat National University46
- Chung-Ang University38
- Korea University38
- Microgrid5→17
- Energy management15→24
- Renewable energy2→10
- Passive cooling1→8
- Electric power system2→9
- Renewable energy23→34
- Passive cooling7→18
- Thermal9→19
- Particle swarm optimization1→10
- Thermal comfort1→10
- Heat pump25
- Heat exchanger10
- Coefficient of performance7
- Nuclear engineering7
- Renewable energy6
Where energy efficiency 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 efficiency patents in South Korea
South Korea energy efficiency patent filing is accelerating — 2,951 filings from 1,661 assignees (2016–2025), led by LG Electronics, Hyundai, KIA; annual filings 247→462.
- LG Electronics703
- Hyundai394
- KIA256
- Hanon Systems244
- Samsung163
- KIA Motors102
- LSIS88
- Halla Visteon Climate Control82
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.