Energy Startups

Capwell builds units that capture low-flow methane emissions from oil and gas wells and facility vents, sold to oil and gas operators. The company originated from a University of Pennsylvania senior design project and now runs commercial pilots with operators.

2 investors

CarboMat produces carbon fibers and battery anode materials from low-value industrial by-products such as bitumen by-products, using a proprietary process aimed at lower production cost and carbon footprint. It serves the composites and battery industries with applications in mobility, defense, aerospace, and energy, and also offers lab services for materials testing and fiber development in North America.

2 investors

Carbon Clean develops modular carbon capture technology, including its CycloneCC system, designed for space-constrained industrial sites in heavy industries such as steel, cement, and energy. It works with large industrial companies to capture CO2 at scale in a cost-effective way to support their decarbonisation targets.

2 investors

BKW Group is an international energy and infrastructure company that provides solutions across infrastructure, buildings, and energy, including grid expansion, energy-efficient buildings, and large-scale engineering projects. It serves customers facing challenges from climate change, urbanization, and digitalization, and employs more than 12,000 people.

2 investors

Carnot Innovations offers an AI-powered analytics platform for smart buildings that acquires data from existing building management systems (BMS) and IoT sensors to deliver energy optimization, predictive maintenance, and continuous commissioning. It targets facility managers of buildings with chiller plants, providing actionable insights and automated energy controls.

2 investors

Carrar is a battery technology company that develops battery modules and systems using a proprietary two-phase immersion architecture to improve battery performance and longevity across cell types and climates. Its solutions target automotive, marine, and grid-scale energy storage applications.

2 investors

Casimir develops technology to extract usable energy from the quantum vacuum through Casimir cavities, aiming to create a novel power source for applications including advanced propulsion and energy generation. The company applies quantum physics research to produce practical energy systems.

2 investors

Casimir develops chips that harvest ambient energy to power devices without batteries, cords, or charging. Its first product line consists of hybrid power systems intended to work alongside existing batteries for the consumer electronics market.

2 investors

Catalyze develops, finances, builds, owns, and operates on-site renewable energy systems — combining solar, storage, and EV charging — for commercial and industrial real estate owners and operators across national portfolios in the US, with no upfront capital cost to the property owner. It also provides proprietary software and solar racking technologies to help partners scale their renewable energy projects.

2 investors

The Clean Energy Finance Corporation (CEFC) is a specialist investor that funds projects across renewable energy, energy efficiency, and low emissions technologies to support Australia's transition to net zero emissions. It works alongside co-investors and industry to fill market gaps and mobilise additional capital.

2 investors

Censys Technologies designs and manufactures fixed-wing VTOL drones, dock systems, and AI-powered edge computing platforms for autonomous inspection of critical infrastructure, primarily serving utilities and energy providers for power line monitoring and vegetation management.

2 investors

ChargePoint designs and deploys EV charging hardware, software, and services for organizations, fleet operators, and charging network businesses. The company operates the largest network of deployed charging ports and provides integrated charging management systems with driver support.

2 investors

Chargetrip provides an EV routing engine with APIs for route planning, charge station mapping, range visualization, and fleet dispatch, which businesses integrate into their apps and websites. Its tools help EV drivers plan journeys and charging stops and help companies optimize and electrify vehicle fleets.

2 investors

ChargeX provides EV charging infrastructure for businesses and the real estate industry, offering its modular Aqueduct charging system along with installation, billing, operation, and support as an integrated package. The system supports up to 10 charging points per supply line and is developed and manufactured in Germany.

2 investors

Circularity Fuels manufactures electrified, AI-controlled reactors that convert waste gas streams from industrial facilities into sustainable aviation fuel (SAF) using renewable energy and advanced Fischer-Tropsch synthesis. The company serves aviation fuel producers and industrial facilities seeking to monetize waste carbon emissions.

2 investors

Circunomics operates a B2B marketplace and predictive analytics platform for second-life and used batteries, matching supply and demand across battery lifecycle stages. It serves mobility OEMs, the energy sector, and recyclers to support a circular battery economy.

2 investors

Clean Energy Fuels supplies renewable natural gas fuel for transportation, targeting vehicle fleets across the United States. It operates in the clean transportation and alternative fuels sector.

2 investors

Clevergy provides a software platform for energy retailers and installers to manage customer relationships and centralize operations, offering energy advisory, self-consumption recommendations, home energy management (HEMS), advanced analytics, and features for energy communities and virtual power plants. The platform integrates with distributors and hardware brands without requiring additional hardware, aimed at energy companies in Spain.

2 investors

Clir AI automates portfolio reporting, benchmarking, and reforecasting for renewable energy assets across solar, wind, and battery storage, giving asset managers and investment managers a comparable view of portfolio performance. Its tools cover contractual availability reconciliation, budget reconciliation, energy yield reforecasting, and real-time performance monitoring for renewable energy investors.

2 investors

cMatter uses AI to optimise building operations, providing insights for property and utility management to improve efficiency, cut operational costs, and reduce environmental impact.

2 investors

Cnergreen develops chemical technologies for oilfield and energy applications, with expertise in nanomaterials for porous media.

2 investors

Cognition Controls provides cellular-connected HVAC and refrigeration monitoring hardware paired with a dashboard for remote portfolio management, helping operators reduce energy costs and catch equipment issues. It serves multisite commercial operators including restaurants, government facilities, retail, professional services, and education across the US.

2 investors

Cold Bore Technology builds digital completions data software for oil and gas well completion operations, including SmartPAD (a digital twin providing a standardized real-time dataset), IntelliSONIC (high-frequency pressure and acoustic monitoring), and OffsetWELLS (real-time FDI monitoring). Its tools serve operators and service companies to consolidate data streams and track on-site services.

2 investors

Collide provides an AI automation platform for oil and gas operators that indexes company data and automates complex operational workflows. It is aimed at engineers and operators in the energy sector, offering enterprise AI that answers queries and handles field-related tasks.

2 investors