Thirty climatetech startups have joined our community so far this year, working on technologies ranging from hydrogen-powered heavy-duty transport to AI-driven grid interconnection.

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

Photo: LNK Energies

Electricity

• ZettaConn develops next-generation thermal energy storage that stores electricity as high-temperature heat and delivers it as dispatchable power or industrial heat for utilities, data centers, and industrial facilities. (Greentown Boston)
• Gemini Energy builds next-generation fuel cells for data-center power, with an integrated CCHP fuel cell that takes natural gas as input and generates DC with no pollution, noise, or water use. (Greentown Houston)
• Evidion Energy develops a next-generation battery architecture that enables controlled electrolyte access for safer, longer-lasting grid energy storage. (Greentown Boston · First Valley Fellowship)
• CemCycle converts organic waste, including mixed, wet, and contaminated streams, into clean energy and a carbon-negative mineral within minutes, permanently sequestering carbon for use in industrial materials. (Greentown Boston · First Valley Fellowship)
• Polaris Systems Optimization provides optimization-based decision-support software, anchored by its Power Systems Optimizer (PSO), for planners and operators of electric power grids. (Greentown Boston)
• FelixFusion uses its Felix platform to model every grid connection point, including capacity, upgrade costs, and constraints, so energy developers can validate interconnection in minutes instead of months. (Greentown Houston)
• SpringCycle Energy uses iron as an ultra-low-cost, rechargeable fuel for seasonal-scale energy storage, cutting storage capacity costs significantly so utilities and data centers can run on clean baseload power priced below gas or coal. (Greentown Boston)

Manufacturing

• Mass Magnetics rapidly produces high-performance magnets from domestic and recycled feedstocks to reduce dependence on foreign-sourced rare-earth materials. (Greentown Boston)
• Loop Chemicals produces low-carbon ammonia through its Chemical Looping Ammonia Synthesis technology, enabling small, modular fertilizer plants to use local clean energy sources and low-carbon feedstocks, cutting emissions and costs. (Greentown Boston)
• IronLattice develops next-generation memory technology for AI and high-performance computing that improves energy efficiency, endurance, and scalability while remaining compatible with existing semiconductor manufacturing. (Greentown Houston)
• ETAK manufactures modular reactors that convert solid waste into clean syngas, delivering cost-effective local energy and major CO₂ reductions. (Greentown Houston)
• Armada AI builds rapidly deployable modular and edge data centers that run on local, stranded, or renewable power, co-locating compute with underused energy and helping balance the grid. (Greentown Houston)
• Atlas Robotics develops a Physical AI platform that powers autonomous material-handling robots and AI-guided forklifts working alongside people in warehouses. (Greentown Houston)
• Thalon Materials reshores magnesium-metal production using patented oxide electrolysis and high-efficiency distillation, requiring 40% less energy and producing 80% lower emissions than the current state of the art. (Greentown Boston · First Valley Fellowship)
• Solas Capture processes critical minerals using reversible, light-activated separation that replaces toxic, reagent-heavy chemistry. (Greentown Boston · First Valley Fellowship)
• Aelun operates a physical-AI platform that closes the loop between AI and experimentation to accelerate the design, discovery, and scaling of energy-storage and energy-conversion materials. (Greentown Boston · First Valley Fellowship)
• KVD makes a STEM detector stage that retrofits onto existing SEMs to enable transmission imaging at roughly 5 nm resolution, approaching TEM-level detail, so manufacturers can analyze semiconductor layers and battery interfaces without a separate TEM. (Greentown Boston)
• ToPerform makes AI-powered, non-intrusive fouling sensors that monitor pipelines around the clock and predict the optimal cleaning time for the process industry. (Greentown Houston)
• Focis AI transforms industrial laser scans into structured asset intelligence, automatically identifying, classifying, and mapping components in refineries and plants for faster inspections, better maintenance workflows, and more accurate digital twins. (Greentown Houston)
• Sheetak designs and manufactures U.S.-made thermoelectric coolers, generators, and assemblies built on its patented CENTUM architecture for solid-state cooling and energy harvesting. (Greentown Houston)
• hibot develops robotic systems, led by its Float Arm platform, for inspecting and maintaining infrastructure in hazardous, hard-to-access environments across the power, oil, gas, and chemical industries. (Greentown Houston)
• AIS Field develops robotic, AI-assisted non-destructive inspection systems, including submersible tank and boiler crawlers, that inspect oil, gas, and power assets without taking them offline. (Greentown Houston)

Transportation

• Sustain Energy delivers cleaner, lower-cost fuel to industrial customers in pipeline-absent, underserved markets, cutting their energy costs and emissions with no infrastructure investment on their end. (Greentown Houston)
• LNK Energies offers a drop-in diesel alternative for heavy-duty transport that stores hydrogen in a stable liquid (LOHC) and releases it on demand through its MIT-patented Hydrogen Release Unit. (Greentown Boston)
• Orbital Arc is developing the Relativistic Ion Thrust (RIOT) Drive, a new ion engine designed to improve the efficiency and scalability of spacecraft propulsion from low Earth orbit to deep space. (Greentown Houston)

Agriculture

• Suyana Climate Insurance provides affordable parametric insurance against droughts, floods, coastal hazards, and extreme weather using satellite data and AI, embedding coverage within bank loans and other financial channels. (Greentown Boston)
• Cocoa Potash transforms high-emissions agricultural waste from cocoa, coconut, and palm-nut into organic potash, fertilizer, and renewable energy. (Greentown Houston)

Buildings

• Armeta turns complex engineering drawings and legacy documentation into structured, usable data, creating an engineering-intelligence layer for industrial facilities. (Greentown Houston)
• Criaterra produces low-carbon, cement-free building materials using its patented BioGeo Agglomerated Stone technology, matching concrete strength with up to 90% less manufacturing energy and full recyclability. (Greentown Houston)
• Verdicity offers services for configuring, purchasing and installing smarter building solutions, tools for building vendors to make their offerings AI-ready, and apps that deliver value on top of existing and new building software systems. (Greentown Boston)