Best Sustainability Tech Companies in Seoul, South Korea
The 85 best Sustainability Tech companies in Seoul, South Korea in 2026, ranked by funding and momentum. Funding, investors, founders, valuation, tech stack and live signals. Top: Cellid.
Our analysis of 293 Sustainability Tech companies
$38.4b in tracked funding; 83% of the stack-profiled cohort runs cloud-native; funding activity peaked in 2025.
Ranked: Best Sustainability Tech companies in Seoul
| # | Company | Disclosed funding | Last round | Employees | Founder | Tech stack | Patents & IP focus | Recent signals |
|---|---|---|---|---|---|---|---|---|
| 1 | ACI Provider of smart waste collection and sorting solutions | — | — | 23 | Kim Hyun-soo CEO | — | — | — |
| 2 | Amtyx Bio Developer of drugs to treat microbial infectious diseases and related diseases | — | — | 24 | Jong Lee Founder & CEO | — | — | — |
| 3 | ArcticPod Developer of thermostat | — | — | — | Leif Zars II Co-Founder | — | — | — |
| 4 | Arum Therapeutics Developer of therapeutics for cancer and respiratory disease | — | — | 6 | — | — | 5 patents Small‑molecule orexin‑2 receptor agonists and checkpoint kinase 2 inhibitors for CNS and oncology therapeutics | — |
| 5 | Biosewoom Manufacturer of PCR based diagnostic kits | — | — | — | Hyun-soon Lim CEO | — | 13 patents PCR-based diagnostic kits for genetic mutations, cancer, and sexually transmitted infections | — |
| 6 | Boryung Developer of vaccines for infectious diseases | — | — | 242 | — | jQuery | 32 patents Developing PI3K/DNA-PK dual inhibitor drugs and stable pharmaceutical formulations | — |
| 7 | Broogs Developing connected lamp for bed side table | — | — | — | Kyoungsu Kim CEO | — | — | — |
| 8 | Central Control Manufacturer of smart lighting control products | — | — | — | Rick Bruner Co-Founder & CEO | — | — | — |
Top 12 Sustainability Tech companies in Seoul
#1
Series B · Seoul, Seoul · founded 2016 · 29 employees$14.3Mraised▾
Developer of small molecule therapeutics for infectious diseases. The company is developing a treatment through bacteriophage for multi-drug resistant bacterias which include Pseudomonas, E.oli, Acinetobacter, and others.
- Sep 2025Series B$14.3M
- Oct 2024Series B—
#2
Public · Seoul, Seoul · founded 2014 · 68 employees$2.4Braised▾
Cellid is involved in developing personalized vaccines for treating cancer and infectious diseases. They have developed a platform, CeliVax, which activates the anti-cancer immune system which allows the immune cells to detect and kill cancer cells. Their pipeline products include BVAC-C is being investigated for cervical, head, and neck cancer, and BVAC-B for gastric cancer. The candidates are in phase II clinical trial.
- 2016Series A—
- 2015Series A—
- 2014Series A—
- 2014Series A—
#3
Series A · Seoul, Seoul · founded 2021 · 9 employees$1.9Mraised▾
Developer of vaccines and immunotherapies for infectious disease. It offers synthetic antigen vaccines using microorganisms and animal cells for rapid protein development and production, DNA vaccine, and mRNA vaccine for covid and viral diseases.
- Oct 2024Series A$1.9M
#4
Series C · Seoul, Seoul · founded 2011 · 37 employees$22.7Mraised▾
Developer of Sensors, smart trash bins, and analytics software for waste management. The offered products are an ultrasonic waste fill-level sensor to monitor solid & liquid waste in the containers and GPS location tracking of bins, a solar-powered trash compactor LED backlights, LCD panel, graphics wrap and wifi routers, a cloud platform to collect data from sensors, and compactors to monitor waste collection operations, optimize waste collection routes and costs.
- Jun 2023Series C$11.7M
- Sep 2021Series B$11M
#5
Seed · Seoul, Seoul · founded 2022$357.5Kraised▾
Provider of an air based virus detection system. It is designed to protect individuals from invisible airborne viruses. It utilizes Photonic PCR technology to amplify air samples and detect viruses. The system offers real time monitoring, and also detect respiratory viruses, including Influenza A, Coronavirus, and RSV.
- Nov 2024Seed$357.5K
#6
Series A · Seoul, Seoul · founded 2021$2.4Mraised▾
Provider of carbon credit solutions and SaaS-based carbon accounting management software. It specializes in greenhouse gas emission measurement, analysis, reduction, and trading solutions.
- Apr 2024Series A$1.5M
#7
Series C · Seoul, Seoul · founded 2013 · 9 employees$27.5Mraised▾
Developer of drug delivery technology and biosensor technology. The DegradaBALLis a drug delivery technology for the development of gene therapy, cancer immunotherapy, antibody therapy, and synthetic drugs. The PANGO technology is the next-generation drug screening technology that allows the rapid screening of antiviral drugs from the drug candidate library.
- Apr 2021Series C$13.9M
- Dec 2018Series B$10.3M
- Mar 2018Series A$3.3M
#8
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—
#9
Seed · Seoul, Seoul · founded 2020$2.3Mraised▾
Online PPA marketplace for enterprises. Platform list buying and selling of projets. It offers a marketplace for the purchase and sale of different environmental commodities, including carbon credits, Guarantees of Origin, International RECs, and US RECs. The marketplace supports over the counter transactions with an integrated built in messenger system, real-time updates, and sorting and searching tools.
- Feb 2024Seed$2.3M
- 2022Seed—
#10
Series B · Seoul, Seoul · founded 2018 · 14 employees$7.1Mraised▾
Henergy provides a platform for energy sharing. Its other services include PV power intermediation for power-brokering, REC trading, and profit management of small solar power plant, ESS Optimal Operational service for business demand forecasting, rate reduction, and earning settlement, Rooftop Sharing service for share the lease revenue of house, and Virtual Power Plant.
- Aug 2022Series B$5.2M
- Jun 2021Series A$1.9M
#11
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
#12
Series A · Seoul, Seoul · founded 2021 · 10 employees$1.4Mraised▾
Provider of a software-as-a-service platform providing carbon neutrality management solutions for businesses. It enables them to measure, share, and reduce their carbon footprint. Its platform offers a comprehensive solution for companies to achieve their sustainability goals and comply with environmental regulations. It aims to support businesses in their transition to a more sustainable future.
- Apr 2023Series A$1.4M
- Sep 2021Seed—
Funding & investor landscape
Notable founders
Market landscape — 10 sub-themes by coverage
Share of Sustainability Tech coverage by sub-theme.
Regulatory-risk over time rising
Funding & growth over time
funding rising · growth rising
What Seoul researches in climate adaptation
- Seoul National University11
- University of Seoul5
- Seoul National University of Science and Technology3
- The Seoul Institute1
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.