Analysts, investors, and other experts are offering up their predictions for 2026’s climatetech areas to watch. Check out just a sampling of Greentown startup members innovating in these key categories, and learn about all of our 200+ startups here!
Alternative battery chemistries
From TechCrunch’s “12 Investors Dish On What 2026 Will Bring for Climate Tech”
- 10DQ’s redox-loop battery uses novel, water-based electrolytes to store energy in dense, low-cost, earth-abundant battery materials.
- Elementium Materials makes more powerful, longer-lasting batteries with a novel, carbonate-free electrolyte.
- Energy Dome’s CO2 battery for long-duration energy storage delivers clean power without a premium.
- WattSto Energy manufactures vanadium redox flow batteries, delivering long-duration storage for both grid-scale projects and off-grid microgrids.
Building-energy optimization
Included in PitchBook’s 2026 Artificial Intelligence Outlook
- Climative offers AI-assisted home-energy assessments deployed in an interactive, web-based platform. This tech streamlines the retrofit decision-making process for homeowners while inviting collaboration from a variety of supporting parties.
- QEA Tech conducts precise, data-driven building-envelope audits using patented AI software, drones, and thermography.
- Teknobuilt is a construction technology company offering an AI platform to help all aspects of program management and execution for workflow automation, collaborative manual tasks, and siloed systems.
Disaster readiness and prevention
From Bloomberg’s “How Investors View the Climate Tech Landscape in 2026”
- Overstory uses machine learning to interpret satellite imagery and climate data in order to monitor the risk of vegetation interacting with power lines, decreasing the risk of fires and outages and reducing costs.
- Upstream Tech builds software that expands access to environmental data, including remote imagery, global water forecasts, and geospatial data.
Farm-management software
Listed in PitchBook’s 2026 Artificial Intelligence Outlook
- Adaviv partners with growers to navigate the complexity of cultivation with lean methodologies driven by AI—so growers can focus business decisions, differentiate, and achieve sustained profitability.
- AgZen’s RealCoverage measures and controls how many droplets are on every leaf—unlocking better outcomes and savings across the season for any spray.
Geothermal energy
From TechCrunch’s “12 Investors Dish On What 2026 Will Bring for Climate Tech”
- Alma Energy focuses on geothermal exploration to deliver scaled renewable-energy production at economic levels.
- Dandelion Energy brings high-performance geothermal heating and cooling to residential buildings using its efficient heat pump and leading design software.
Grid-responsive power systems—especially for powering data centers
Shared by industry leaders at a recent Greentown Forum
- COI Energy’s full-service digital-energy-management platform eliminates energy waste in buildings—and repurposes that waste for both profit and community investment.
- EQORE offers full-service, intelligent energy-storage solutions for commercial and industrial facilities to minimize their electricity costs without any change in operations.
- Revterra’s kinetic stabilizer offers an immediate, scalable solution for instant grid stabilization, enhanced resilience, and reduced reliance on costly power electronics.
Solar-plus-storage
From Deloitte’s 2026 Renewable Energy Industry Outlook
- 247Solar provides high-temperature, modular solar power with overnight storage—now delivered as a turnkey solution for clean industrial-process heat and baseload renewable electricity, on a power-purchase-agreement basis.
- InfraNergy develops distributed clean energy projects—accelerated by virtual power plants that aggregate batteries powered by solar energy—to reduce power costs and drive decarbonization.
Supply-chain visibility
Listed in Sustainability Magazine’s “Top 10: Sustainability Predictions for 2026”
- Realizse unlocks real-world asset value and traceability by leveraging tokenization, the blockchain, and product/project verification for circularity, energy, and the real estate market.
- Terralytiq’s enterprise software platform serves as a decarbonization copilot for industrial supply chains, helping manufacturers cut supply chain costs and carbon while spending less time on supplier engagement.
Water-efficient cooling for data centers
Shared by industry leaders at a recent Greentown Forum
- SolarMantle develops a state-of-the-art advanced material that passively cools structures by reflecting and emitting heat into outer space.
- Transaera’s advanced rooftop units remove humidity before cooling the air.—cutting the energy use and emissions needed to keep buildings comfortable.