Mitihoon – A report by Bain & Temasek projects that if global temperatures rise by 3 degrees Celsius by 2070, Southeast Asia could face economic losses of up to USD 70 trillion, making it one of the most vulnerable regions to the climate crisis. At the same time, the green economy in the region is growing significantly, with an estimated value of around USD 300 billion per year by 2030 — or about 5% of the region’s total GDP.
To address this challenge, the Decarbonize Thailand Symposium 2025, held on 20 May 2025 at True Digital Park, became a key platform bringing together leaders from the public and private sectors, along with more than 30 startups from both Thailand and abroad, to showcase ready-to-deploy Climate Tech innovations
From this gathering emerge five standout startups to watch, each offering unique approaches to carbon reduction and long-term sustainability. One thought-provoking question remains: “If carbon could be transformed into anything, what would you turn it into?”
Helical Fusion: A Japanese Startup Aiming to Create an ‘Artificial Sun’ as an Ultimate Clean Energy Source for the Future
“We are developing a new technology that acts like an ‘artificial sun on Earth’ to become a power source of the future,” said Takaya Taguchi, Co-Founder and CEO of Helical Fusion, as he described the nuclear fusion technology the company is working on. This future-oriented energy solution releases no carbon emissions, produces no high-level radioactive waste, and utilizes abundant fuel sources from seawater. At the heart of the innovation is the Helical Stellarator, a reactor that uses a double-helical electromagnetic coil creating a strong magnetic field to control plasma, enabling continuous operation, easier maintenance, and enhanced safety. The company aims to build the world’s first steady-state fusion power plant by 2034 and begin commercial operations in the 2040s.
Although Helical Fusion has received support from the Japanese government and international recognition, it is still seeking additional funding of USD 300–400 million to advance the project toward its goal. The company has begun expanding its partnerships into Southeast Asia and Thailand, opening opportunities for private sector collaboration in the adoption of clean energy.
When asked what he would turn carbon into if he could, Takaya answered “Carbon has long served as the driving force behind human progress. But now, I believe it’s time to reimagine it as a medium for human expression. With fusion energy, we are unlocking a future where we no longer need to burn carbon—freeing it to become a source of creativity instead.”
CHOSEN and Energy Management Technology for an EV Ecosystem Ready for the Future
In an era where electric vehicles (EVs) are growing rapidly, Thai startup CHOSEN steps in to fill the gap in infrastructure systems that are not yet equipped to efficiently support large-scale charging. They focus on two areas: first, developing a platform for managing EV charging stations that supports devices from various brands and allows for easy control through a single system; and second, developing electric load control technology that reduces the risk of power outages caused by overconsumption, without requiring investment in new transformers. “We act like traffic controllers for electrical energy,” said Worapoj Ruenrerngwong, Founder of CHOSEN.
CHOSEN also envisions the broader energy ecosystem at the regional level, with plans to connect cross-border energy management systems across ASEAN. This is in preparation for a future where people can drive EVs across borders. The system has already been tested in collaboration with the Provincial Electricity Authority (PEA) and has been proven to reduce energy usage by up to 70%. The company is now expanding into Laos, Malaysia, and Vietnam after receiving innovation awards from several international platforms.
Worapoj left us with a thought-provoking answer to the final question: “If carbon could be transformed, I’d want it to become something that naturally decomposes without harming anyone, something that doesn’t leave a burden on the planet.”
Continewm: A Japanese Innovation That Makes Air Conditioners Cool Faster, Save Energy, and Cut Carbon—All in One Step
“This is an incredibly smart innovation—something only the Japanese know how to do,” said Thomas GAL, Founder and CEO of Continewm, referring to the patented Japanese ceramic air filter embedded with infrared radiation. Once installed in an air conditioning unit, the filter immediately helps reduce energy consumption. “As air passes through the mesh, two things happen: first, it’s purified with negative ions that help reduce PM 2.5 and PM 10; and second, it saves energy by breaking down water molecules into smaller clusters, increasing the contact area with the cooling coil. This helps the air conditioner cool faster and use less energy,” Thomas explained, adding that the company verifies its results through systematic before-and-after energy consumption measurements.
The technology has been in use in Japan since 2011 and expanded to Thailand in 2015, where it has been adopted by large-scale businesses ranging from hotels and factories to embassies and supermarkets. Continewm is also growing its presence internationally—in India, Singapore, Europe, and the United States. Thomas believes that the path to Net Zero lies in collaboration, not competition. “Carbon reduction must be a global effort,” he emphasized. “The climate crisis knows no borders.”
When asked what he would turn carbon into, Thomas replied, “A diamond—because a diamond is carbon under immense pressure. It’s a metaphor for transforming problems into something valuable, turning crises into opportunities.”
LOCOL: A Thai Startup Turning Rejected Cacao into Methane-Reducing Cattle Feed for Livestock That Can Coexist with the Planet
The livestock industry emits an enormous amount of methane gas, which is a greenhouse gas that traps heat 80 times more effectively than carbon dioxide during the first 20 years it remains in the atmosphere. This was the starting point for LOCOL, a Thai startup that developed a cattle feed supplement extracted from discarded, low-grade cacao pods in Thailand. Research has confirmed that the supplement can reduce methane emissions from cows’ digestive systems by up to 44.52%. “What’s important is that this cacao doesn’t need to be newly cultivated and doesn’t add to the carbon footprint,” said Hathaitanit Tongthong, Co-Founder of LOCOL. Currently, LOCOL offers two product formats for farmers to choose from: Pre-Mix (mixed into feed) and Lick Block (mineral blocks for cows to lick). The initiative began with trials in Nan province and is now preparing to expand to other areas in Thailand.
Although still a young entrepreneurial team, LOCOL’s vision goes beyond reducing methane. They aim to shift the mindset of the livestock industry in tropical countries through a business model that utilizes local agricultural waste. They are also preparing to set up a data collection system to support future carbon credit claims and plan to expand to other regions facing similar waste challenges.
If carbon could be transformed into anything, Hathaitanit said she would want it to become: “Money, to invest in good solutions that help eliminate global warming.”
VEKIN: Making Carbon Measurable with AI and Blockchain for Sustainable Reduction
VEKIN is a Thai deep tech startup that began as a carbon footprint validation and verification body before expanding into a platform powered by AI and blockchain. The platform is designed to turn complex carbon emission data into actionable strategies. “Instead of dealing with piles of documents or complicated processes, we use AI to handle repetitive tasks, saving time and making it easier for small businesses to access and measure their carbon footprint,” said Wanut Kanerew, Business Development Manager at VEKIN. He added that the entire system is built with ISO-standard security to ensure user trust.
VEKIN is also developing digital tools that make carbon reduction accessible to everyone—from CERO Carbon Wallet, a personal wallet for storing carbon credits, to Carbon Receipt, which verifies carbon offsetting at events using blockchain. Most recently, they introduced a feature that allows event participants to scan a QR code, select their mode of transportation, and offset emissions in real time.
“In the future, when you buy a pair of sneakers, you won’t just care about the design or comfort—you’ll want to know how many kilograms of carbon were emitted,” said Wanut. When asked what he would transform carbon into if possible, he replied: “Verifiable credits, because every action should be backed by data to drive sustainable change.”
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