Climate Tech Startups

GoSprout connects job seekers with employers through apprenticeships and pre-apprenticeship programs, with a focus on creating workforce development pathways for underserved communities. The platform serves as a matching service between companies and individuals seeking career opportunities and skills training.

2 investors

Grand Perspective develops scanfeld®, an automated system for continuous, site-wide monitoring of industrial emissions across facilities up to 10 km², using proprietary software and an emissions database to detect and document gases such as methane, carbon dioxide, and nitrous oxide. The product serves industrial companies for safety, process optimization, regulatory compliance, and ESG/net-zero reporting through real-time data and dashboards.

2 investors

Graphene Enterprise develops biocide-free graphene-based coatings for marine vessels that reduce fuel consumption and emissions while managing biofouling on hulls and propellers. The coatings are designed for ship owners and commercial fleet operators seeking operational efficiency and environmental sustainability.

2 investors

Graphyte develops Carbon Casting, a carbon dioxide removal method that dries and compresses biomass such as timber and crop residues into dense carbon blocks wrapped in an impermeable barrier and stores them in monitored underground sites. The company sells durable carbon removal to organizations pursuing low-carbon goals in the climate and carbon markets.

2 investors

Greencode Ventures is a European venture capital fund investing from Seed through Series A in applied AI solutions for energy systems, industrial operations, and critical infrastructure. As a VC firm rather than an operating company, it backs founders building companies in the energy transition space.

2 investors

GreenIRR offers a carbon reporting platform for trucking carriers and fleet operators to measure and report their fleet emissions. It targets carriers that must supply emissions data to shippers facing carbon footprint reporting requirements.

2 investors

GreenJams manufactures Agrocrete, a carbon-negative building material made from upcycled crop residues and industrial byproducts that replaces conventional bricks and cement blocks in construction. The material offers faster masonry, reduced construction costs, and superior thermal insulation while removing carbon dioxide.

2 investors

Greenplaces provides a platform that simplifies sustainability reporting for vendors, enabling them to meet compliance requirements, build customer trust, and demonstrate their sustainability practices across supply chains.

2 investors

GreenPortfolio matches individuals with pre-screened, SEC-reviewed financial advisors who specialize in climate-aligned and sustainable investing, and provides algorithmic climate scoring of users' investment portfolios. Registered as a U.S. investment adviser, it does not manage assets directly but refers users to third-party advisers based on their financial and climate profile.

2 investors

Greenq is a Brazilian company that builds waste collection tracking technology for municipal services. A hardware device mounted on garbage trucks records data about each pickup automatically, without driver input. Municipalities, collection contractors, and system integrators use the resulting data to weigh incoming waste, forecast volumes, and manage routes, costs, and emissions.

2 investors

Greentown Labs is a climatetech startup incubator that supports and houses early-stage entrepreneurs, connecting them with corporate partners, investors, and community resources to develop and commercialize energy and climate technologies. It operates locations in Boston and Houston in the United States.

2 investors

Gridless installs Bitcoin mining operations at renewable, rural mini-grid sites in Africa, buying surplus power to help independent power producers become financially viable while improving grid stability and rural electrification. It also builds Gridless OS, an edge-based optimization system that coordinates Bitcoin miners in real time based on a mini-grid's operating conditions.

2 investors

GridWiz operates an energy platform that integrates demand response, energy storage systems, renewable energy, and EV charging infrastructure to optimize customer energy efficiency and grid stability. The company serves enterprises and EV charging operators seeking to reduce energy costs and achieve renewable energy commitments.

2 investors

Gross-Wen Technologies (GWT) develops the patented RAB algae-based system to treat municipal and industrial wastewater, recovering nutrients from the water and recycling the nutrient-rich algae into slow-release fertilizer. The company serves municipal and industrial clients seeking sustainable wastewater treatment.

2 investors

GT Wings builds AirWing, a compact and modular wind-assisted ship propulsion system ("Jet Sail") that can be retrofitted to existing vessels or integrated into newbuilds to cut fuel use, emissions, and compliance costs. It serves shipowners across vessel types including bulk carriers, tankers, container ships, and general cargo ships, in the maritime decarbonization sector.

2 investors

Guac helps grocery retailers reduce food waste and increase profitability through AI-powered demand forecasting and inventory replenishment. The company works with grocery stores to optimize their fresh food operations and minimize unsold inventory.

2 investors

Gybe provides watershed-scale water quality monitoring.

2 investors

HANetf is a provider of Exchange Traded Funds (ETFs) and Exchange Traded Commodities (ETCs), distributing its funds through regulated investment platforms and brokers rather than directly to individual investors. This page hosts a podcast episode about COP27, climate change, and sustainable investing.

2 investors

Hatch Blue Investments is a venture capital firm that invests in startups across the aquaculture and seafood value chain, including farming systems, nutrition, health and genetics, and alternative seafood. It operates funds such as HFII and BRF, offering Safe notes and equity tickets to founding teams in the sector.

2 investors

HeavyFinance operates a crowdfunding platform where investors fund agricultural loans to farmers, starting from €100 per loan, and earn returns as farmers repay. It focuses on sustainable and regenerative farming across five European markets, connecting retail investors with agricultural credit for seeds, equipment, and operations.

2 investors

Helio Home provides home electrification services for homeowners in Colorado's Front Range region. The company has been acquired by and is now part of Jetson Home.

2 investors

Helios develops a zero-emission metal refining process, the Helios Cycle, for producing green iron used in steelmaking, aimed at decarbonizing the iron and steel industry. Originating from lunar oxygen-extraction research, its method produces iron with no direct emissions and roughly 30% less energy than conventional processes.

2 investors

Heura Foods makes plant-based meat alternatives — including burgers, chunks, fillets, cold cuts, nuggets, sausages, and mince — using ingredients such as soy and pea protein and extra virgin olive oil. The company positions its products with a Mediterranean identity and sells to consumers seeking meat substitutes.

2 investors

Highwood Emissions Management offers EIP (Emissions Intelligence Platform), software for oil & gas operators to build audit-ready methane inventories, automate emissions reconciliation, and report against standards including OGMP 2.0, Veritas, MiQ, CDPHE, and EU import regulations. The company also provides advisory services and training to help operators achieve OGMP 2.0 Gold Standard certification and optimize methane measurement programs.

2 investors