Thirteen climatetech startups joined our community in Q2 2025, working on technologies ranging from 3D solar, to sustainable lithium recovery, to whale detection.

We’re thrilled to support these groundbreaking climatetech startups—let us introduce you!

Buildings

SolarMantle develops a state-of-the-art advanced material that passively cools structures by reflecting and emitting heat into outer space. (Greentown Boston)

Electricity

Biospheric AI is a data-driven energy-forecasting company producing high-resolution, building-level demand forecasts for electricity, heating, and natural gas. (Greentown Boston)

EQORE offers full-service, intelligent energy-storage solutions for commercial and industrial facilities to minimize their electricity costs without any change in operations. (Greentown Boston)

Janta Power’s proprietary, 3D-solar-tower technology reimagines how solar is deployed—vertically rather than flatly—enabling significantly greater power and energy generation in the same footprint as traditional solar.  (Greentown Houston)

Pix Force develops AI algorithms that utilize computer vision, machine learning, and deep learning to inspect assets including substations, transmission lines, and photovoltaic plants using drones. (Greentown Houston) 

Vertical Horizons is commercializing vertical gallium nitride fin field-effect transistors (known as GaN FinFETs) to redefine power conversion, offering robust and scalable solutions for modern energy and power infrastructure. (Greentown Boston)

Wattsto Energy is the manufacturer of a long-duration-energy-storage system with a unique hybrid design that provides fast, safe, sustainable, and cost-effective energy storage at the microgrid and grid levels. (Greentown Houston)

Manufacturing

Encore CO₂ transforms carbon emissions into valuable products through its innovative electrolysis technology, converting CO₂ into sustainable chemicals such as ethanol, acetate, and ethylene. (Greentown Houston)

HKG Energy’s proprietary silicon materials help to increase battery energy density by 80 percent, at 40 percent reduced cost, to power the next generation of EVs, energy-storage systems, and electrified transportation. (Greentown Boston)

Licube is pioneering sustainable lithium recovery from underutilized sources—such as produced water from oilfields—using its proprietary and patented electrodialysis technology. (Greentown Houston)

Newfound Materials is the predictive engine for materials R&D, unlocking new synthesis pathways to the world’s most critical materials. (Greentown Houston)

Resiliency + Adaptation

Realizse unlocks real-world asset value and traceability by leveraging tokenization, the blockchain, and product/project verification for circularity, energy, and the real estate markets. (Greentown Boston)

Transportation

WhaleSpotter makes a marine electronic device that combines thermal imaging, AI, and human intelligence to detect marine mammals at great enough distance to avoid them. (Greentown Boston)

Photo: Janta Power