Climate Tech Startups

Scoot Science provides ocean intelligence for commercial fishing and aquaculture operations, offering real-time ocean forecasts, condition monitoring, and data logging tools. Its software translates environmental, biological, and operational data into fish welfare metrics to help operators anticipate events like harmful algal blooms and low oxygen and reduce fish mortality.

3 investors

Seneca builds an autonomous, rapid-response fire suppression drone system combining hardware, software, and AI, allowing a single pilot to control multiple craft that detect, target, and suppress wildfires and hot spots. The system is aimed at firefighters, fire agencies, insurers, and owners of high-value property and infrastructure in the U.S. wildland-urban interface.

3 investors

Sensibo makes smart controllers and sensors that add remote control, automation, and geofencing to existing air conditioners and heat pumps, along with indoor air quality monitoring for pollutants like CO2, VOCs, and PM2.5. Its products, aimed at homes and enterprise building management, use AI to reduce energy use and improve indoor climate and air quality.

3 investors

Sentra.world offers an AI-powered SaaS platform for carbon accounting, emissions monitoring, and automated CBAM/CCTS compliance reporting across supply chains, targeting metals and engineering producers such as the steel industry. It also provides consultancy services and a marketplace for green products, and is recognized as an official CBAM consultant by EEPC India.

3 investors

SepPure Technologies develops nano-filtration membrane technology that replaces conventional energy-intensive chemical separation processes, reducing solvent use, energy consumption, and emissions. It serves industrial chemical manufacturers seeking cleaner separation methods.

3 investors

Seurat Technologies is a metal contract manufacturer that produces high-volume, industrial-scale metal parts using its proprietary Area Printing additive manufacturing technology, which decouples print speed from resolution. It serves conventional manufacturing markets and positions itself around decarbonization, with U.S. production based in a Boston facility.

3 investors

Currence (Sightline Climate) offers a data platform that pairs an AI data engine with expert analysts to turn thousands of sources into proprietary data, models, and forecasts on energy and climate technology. It serves power and utility leaders, developers, investors, and founders, delivering insights via platform, API, or embedded workflows.

3 investors

Sinay provides data collection, AI analysis, and compliance monitoring for marine and offshore construction projects. The platform aggregates environmental, wildlife, and acoustic data to help contractors meet regulatory requirements across baseline assessment, environmental impact planning, construction monitoring, and operational phases.

3 investors

Sirona builds modular Direct Air Capture systems that use solid sorbents to remove CO2 from the air, then hands the captured CO2 to partners who inject it into basalt rock for permanent mineralized storage. The company deploys projects in regions with renewable energy and storage capacity, using sensor-based measurement and third-party verification to sell carbon removal to organizations offsetting unavoidable emissions.

3 investors

Smart Energy Water (SEW) provides digital customer experience, workforce experience, and AI/ML analytics platforms designed for energy, water, and gas utilities. The company helps utilities connect with customers and employees through next-generation technologies including artificial intelligence, machine learning, and IoT solutions.

3 investors

Smartbin.io, based in Walnut, California, makes a connected indoor waste bin with fill-level sensing. The bin alerts users when it needs emptying and records daily data on waste and recycling volumes, which is useful to facilities and building operators.

3 investors

Snowfox Discovery is a natural hydrogen exploration company developing technology to locate and unlock naturally occurring hydrogen in the geological subsurface. It aims to supply natural hydrogen as a feedstock for ammonia, fertiliser, and metal and fuel refining to support the energy transition.

3 investors

Solidec builds autonomous electrolyzer-based generators that use air, water, and electricity to produce essential chemicals on site and on demand, removing supply-chain, delivery, and storage burdens. The company develops electrochemical reactor technology for sustainable, emissionless chemical and fuel manufacturing.

3 investors

Spatial Pleasure builds the Mobility Intelligence Platform (MIP), which combines pre-built functional micro-components to address recurring operational challenges for transport and logistics operators. The company also works on decarbonizing mobility, including obtaining Japan's first J-Credit certification for heavy EV vehicles and quantifying the environmental value of bus modal shifts.

3 investors

Spiritus develops direct air capture (DAC) technology to remove carbon dioxide from the atmosphere and sequester it, providing a scalable and modular system for carbon dioxide removal at lower cost.

3 investors

SpotLight provides sparse seismic monitoring for carbon capture and storage (CCS/CCUS) projects, using a single seismic source and receiver to detect subsurface changes such as CO2 presence, pressure, and fluid movement. It serves reservoir and production engineers with predictive maintenance and dynamic subsurface detection using standard acquisition equipment.

3 investors

Square Roots operates modular indoor hydroponic farming facilities and provides farm-management software along with expert services for growing crops in controlled environments. It serves food suppliers, agricultural researchers, and food-security organizations, and licenses its platform for deploying indoor farms at various scales.

3 investors

Starlight Engine develops fusion energy technology and aims to demonstrate commercial fusion power generation using advanced superconducting tokamak (FAST) technology. The company integrates research and industry expertise to advance fusion energy toward industrial implementation and societal deployment, with focus on Japan-origin technology for global markets.

3 investors

Stegra produces green steel using green hydrogen and green iron, targeting a 95% reduction in emissions compared to conventional steel production. The company serves industrial customers in the steel and heavy industry sectors seeking to decarbonize their value chains.

3 investors

Stony Creek Colors manufactures traceable, 100% plant-based indigo and non-indigo dyes as a replacement for synthetic, petrochemical-derived colorants, sold as powder, paste, or liquid to denim mills, fashion brands, and independent makers. The vertically integrated company manages the natural indigo value chain from seed to dye, working with farmers to grow indigo as a regenerative rotational crop, with US-based extraction facilities.</parameter> <parameter name="founders">[]

3 investors

StormHarvester provides AI-based, real-time analysis of rainfall and wastewater networks to help water utilities, municipalities, and environmental agencies shift from reactive to proactive network management. Its tools detect inflow and infiltration, blockages, pump station and rising main issues, spills, and support network control.

3 investors

3 investors

Sunswap designs and manufactures electric, zero-emission transport refrigeration units (its "Endurance" product) for logistics fleets and retailers, aiming to replace diesel-based refrigeration in the cold chain. The company serves transport operators and retailers across the UK and Europe, with intelligent connected systems that provide real-time performance data.

3 investors

Supercritical sources, co-develops, and distributes carbon removal supply, including an agreement with biochar project Exomad Green for up to 500,000 tonnes through 2028. It focuses on finding and creating carbon removal projects and providing distribution to buyers.

3 investors