Climate Tech Startups

Intensel operates an AI-powered platform and APIs that quantify extreme weather and physical climate risk at the individual asset level, translating hazard data into financial metrics such as Climate Value at Risk and Average Annual Loss. It serves central banks, asset managers, insurers, real estate owners, and consulting firms for investment decisions, resilience planning, and regulatory reporting.

2 investors

Greenhouse operates a climate tech hub and co-working space in Sydney, Australia, along with an event space for climate-aligned businesses. It connects industry, government, and startups on projects spanning research, procurement, and cross-industry collaboration.

2 investors

IONA develops autonomous delivery drones to address rural logistics gaps. The company designs drone systems and software for last-mile delivery in underserved areas.

2 investors

Isle Utilities runs a global forum and advisory practice that connects water technology innovators with utilities, investors, and end users to evaluate, pilot, and deploy novel technologies. It provides technical and market intelligence, strategic focus, and implementation support to the water and industrial sector, with a network of 200+ members across more than 20 countries.

2 investors

JCCL develops carbon dioxide capture and resource recovery technology for achieving carbon neutrality. The company provides CO₂ separation materials, modular systems, and engineering solutions tailored to customers' emission sources.

2 investors

Jupe designs and manufactures off-grid dwellings for landowners seeking to activate their properties through hospitality or residential use. The company creates prefabricated, solar-powered living spaces produced in the United States with an emphasis on sustainable design and durability.

2 investors

Jupiter Ionics develops patented modular electrochemical technology to produce carbon-neutral green ammonia from renewable energy for use in agriculture, shipping fuel, and renewable energy export. The technology, developed at Monash University, uses an electrolytic cell that produces ammonia with 100% selectivity, targeting fertiliser production, transport, and Australia's renewable energy export market.

2 investors

JustAir builds an air quality monitoring platform that provides accessible air quality data and insights to communities, resident groups, governments, and public health advocates. The company focuses on environmental justice, giving underserved communities in the US the data they need to drive locally-led action on air pollution.

2 investors

Karos operates a short-distance carpooling app that matches drivers and passengers on their daily commutes, offering flexible role-switching, verified identity profiles, a women-only ("Ladies only") ride option, and a guaranteed-ride-home service via taxi or VTC. The France-based service positions itself around reducing commute emissions and building a trusted community of carpoolers.

2 investors

Kumo provides software infrastructure and financing solutions for carbon removal projects by leveraging institutional debt capital rather than traditional equity funding. The company facilitates the flow of capital into climate action through the integration of legal frameworks and technology for carbon markets.

2 investors

Kateri helps ranchers build natural capital and earn income through carbon credits and nature-based programs by providing soil sampling, ranch advisory, technology, and infrastructure investments such as water systems and perennial seeding. Serving ranchers primarily in the Western U.S. as well as international projects, the company brokers soil carbon credits via registries like Verra and Climate Action Reserve; as of December 2025 it became part of Cultivo.

2 investors

Kazadi Enterprises develops thermal energy systems and liquid desiccant air systems for industrial air drying and dehumidification, enabling high-efficiency operation at lower cost for indoor grow and processing facilities.

2 investors

Keboola provides a data platform that helps organizations turn data into reliable decisions. Operating since 2008, it serves businesses working with data across industries.

2 investors

Keel Labs develops sustainable textile fibers from seaweed biopolymers, with its flagship Kelsun fiber. It focuses on materials innovation for the fiber and textile industry, drawing on ocean-derived inputs.

2 investors

Ki Hydrogen develops a biomass electrolyser that combines renewable electricity with lignocellulosic biomass to co-produce green hydrogen and biogenic carbon. These outputs serve as low-cost building blocks for decarbonising heavy industries such as aviation, maritime, chemicals, and steel through products like e-fuels, green ammonia, and fertilisers.

2 investors

Klaim provides invoice financing and working capital solutions to healthcare providers, SMEs, and real estate agents facing cash flow delays, delivering funds within 24 hours. The platform serves businesses across multiple sectors including healthcare, retail, construction, and food distribution in the Middle East region.

2 investors

Kleinfelder is an engineering, design, and professional services firm focused on infrastructure improvement and environmental protection. Founded in 1961, it works across multiple markets providing consulting and project services.

2 investors

Klima Protocol is open, blockchain-based infrastructure for voluntary carbon markets, recording purchases and retirements on a public ledger with on-chain proof and no retirement fees. It serves carbon buyers offsetting emissions and project developers or suppliers selling credits, connecting them through unified liquidity pools and standardized carbon classes.

2 investors

Komaza is a forestry company in Kenya that uses a smallholder microforestry model, partnering with thousands of small farmers to grow trees on distributed land pockets rather than large plantations. It operates a seedling nursery and modular sawmill connected by a tech platform for real-time tree management, producing wood while generating farmer income and capturing carbon.

2 investors

Kvasir Technologies has developed a liquefaction process that converts non-edible plant biomass (lignocellulose from agricultural and forestry waste) into a CO2-neutral drop-in biofuel that serves as a 1:1 substitute for fossil marine fuel. A spin-out from the Technical University of Denmark, its fuel is designed to integrate with the existing marine fuel supply chain to help shipping fleets meet IMO emission reduction targets.

2 investors

Kvist offers an AI-based platform that drafts descriptions and identifies outstanding tasks for environmental requirements, helping construction and property teams collect and report sustainability data across a building portfolio. It targets sustainability managers, contractors, and facility staff, replacing spreadsheets with centralized tracking, task distribution, and deadline alerts.

2 investors

Latitudo40 develops cloud-based geospatial intelligence platforms that analyze satellite data to support climate risk management and sustainable urban planning. The company serves cities and enterprises seeking to understand and manage climate resilience using accessible satellite imagery and geospatial analytics.

2 investors

Leakmited offers Twin, a digital twin platform that unifies asset, technical, and budget data for local authorities managing drinking water and sanitation networks, letting them build and update multi-year investment plans (PPI), simulate renovation scenarios, and generate work and subsidy files. It serves French water utilities and municipalities, using AI to detect inconsistencies in decade-long plans and simulate water savings and network efficiency.

2 investors

Libryo provides a software platform that identifies and tracks environmental, health, and safety (EHS) legal and regulatory obligations across multiple jurisdictions for businesses. It is aimed at compliance professionals managing legal compliance and sustainability requirements.

2 investors