A Bold Bet on Decarbonizing Heavy Industry
Austin is quickly earning a reputation as a major hub for green technology. Now, one of the city’s prominent venture capital firms is making a massive play to clean up heavy industry.
Series X Capital has led a $25 million Series A funding round for ZeroEmission Labs, a pioneer in the climate technology space. The investment marks a significant milestone for the startup, which specializes in eliminating fossil fuels from industrial manufacturing. Several other clean energy investors joined the round, including EarthRise Ventures and Horizon Green Capital. This fresh injection of capital will help ZeroEmission Labs scale up its operations and bring its proprietary thermal energy storage technology to market.
Cracking the Code of Factory Heat
The industrial sector is notoriously hard to clean up. Factories need intense heat to produce everyday essentials like cement, steel, glass, and paper. Historically, getting temperatures above 1,000 degrees Celsius required burning coal or natural gas. Electric heating options were either too expensive or simply could not reach the extreme temperatures needed for massive industrial plants. ZeroEmission Labs claims to have cracked the code.
The startup’s core technology, known as the ThermaGrid, acts like a giant, super-insulated battery for heat. It draws electricity from the grid when wind and solar power are cheap and abundant. Then, it stores that energy as heat inside specialized, low-cost ceramic blocks. When a factory needs energy, the ThermaGrid releases it as clean, high-temperature steam or hot air—reaching temperatures up to 1,500 degrees Celsius.
It is a simple concept with massive implications. By separating when electricity is consumed from when heat is used, the system keeps costs low while keeping emissions at zero.
The Road to Commercial Scale
“We cannot solve the climate crisis without tackling the factory floor,” said Dr. Elena Rostova, CEO and co-founder of ZeroEmission Labs. “Industrial heat accounts for roughly 20 percent of global carbon emissions. Until now, manufacturers had no viable alternative to fossil fuels. Our technology gives them a reliable, cost-effective way to electrify their operations.”
Rostova and her co-founder, Dr. Julian Chen, started the company in 2021 inside a university garage. They spent the first two years quietly filing patents and testing materials. When they finally demonstrated their prototype to local investors, the traction was immediate.
Series X Capital saw the potential early. Based in Austin, the firm has been quietly expanding its climate tech portfolio over the past three years. Marcus Vance, a General Partner at Series X, will join the startup’s board of directors as part of the deal.
“Elena and her team are solving one of the most stubborn pieces of the net-zero puzzle,” Vance said. “They aren’t just pitching a theoretical concept. They have working prototypes and a clear line of sight to commercial deployment. We wanted to make sure they had the resources to move fast.”
What Comes Next
The startup plans to use the $25 million to build its first commercial-scale assembly facility just outside Austin. This plant will produce the ceramic modules and thermal storage units used in the ThermaGrid systems. The company expects the facility to create dozens of high-skilled manufacturing and engineering jobs in the local community over the next year.
Texas is a fitting home for this technology. The state has an abundance of wind and solar energy, but the local power grid has struggled with extreme weather and massive fluctuations in supply. By storing excess renewable energy as thermal energy, systems like ThermaGrid can help stabilize the grid while providing a reliable source of power for factories.
Additionally, the funding will support three commercial pilot projects scheduled to launch in late 2025. These pilots include collaborations with a major chemical producer in the Gulf Coast and a glass manufacturer in the Midwest.
The investment comes at a time of heightened interest in climate tech, despite a broader slowdown in venture capital funding. Investors are increasingly looking for companies that offer concrete, scalable solutions to decarbonize hard-to-abate sectors. For ZeroEmission Labs, the path forward is clear.
“This funding is a major vote of confidence,” Rostova said. “But the real work begins now. We have to show the industry that going green doesn’t mean sacrificing reliability or profit.”
