Energy Startups

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

Celadyne develops thin, durable proton exchange membranes used in fuel cells, electrolyzers, and flow batteries, with hydrogen fuel cells and electrolysis as initial applications. It sells these membranes to industrial customers such as utilities, EPCs, and manufacturers in energy, steel, and concrete, aiming to improve durability and efficiency while reducing PFAS and iridium use.

2 investors

CeLLife Technologies develops battery testing and diagnostics technology that enables advanced data collection to assess battery quality, reduce scrapping of good cells, and extend battery life for manufacturers and energy storage operators. Founded as a spin-off from Tampere University, the company serves the battery production industry with a focus on European and global markets.

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

Central Moloney manufactures pad-mounted transformers for electrical power distribution, serving utility and industrial customers with ratings from 30 to 2,500 KVA.

2 investors

BlackBerry Certicom provides cryptographic key management and PKI solutions for securing device firmware, silicon chips, and connected infrastructure throughout their lifecycle. The company serves automotive, IoT, critical infrastructure, and industrial customers with quantum-resistant code signing and identity management technology.

2 investors

Cetos Water develops advanced water treatment technology for desalination and brine management. The company commercializes thermally-driven solvent-based separation extraction (TSSE) technology to address hypersaline brine treatment and mineral recovery.

2 investors

Chalumeau develops electrification technologies to reduce carbon emissions in cement manufacturing. The company helps cement producers decarbonize by replacing fossil fuel combustion with innovative electric processes.

2 investors

CHARGE+ is an integrated EV charging solution provider that supplies, installs and maintains charging points for real estate developers, commercial building managers, and residential property owners. It operates across Singapore and Southeast Asia, with a goal of deploying 30,000 charging points by 2030.

2 investors

Chooose provides modular software that enables airlines to procure, manage, and report on sustainable aviation fuel (SAF) initiatives, including inventory management, automated accounting, customer engagement features, and compliance reporting for regulatory frameworks.

2 investors

Choose Energy is an energy marketplace that helps consumers compare and choose electricity and natural gas plans from licensed providers across multiple U.S. states. It operates as a licensed energy broker/aggregator serving residential and business energy customers.

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

Clarke is a Brazilian energy management company that helps businesses reduce electricity costs through the free energy market (Mercado Livre de Energia) and shared solar energy, combining technical specialists, market data, and a monitoring platform. It compares offers from 75+ suppliers, handles contract and regulatory monitoring, and provides a dashboard tracking consumption and savings across customers' energy units.

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

CLEAResult delivers energy efficiency and conservation services to utilities, governments, and businesses across North America, helping clients achieve energy reduction and demand-side management goals.

2 investors

Clearfork is a midstream oil and gas company with leadership possessing over 105 years of combined industry experience. The page does not provide sufficient detail about specific offerings, customer segments, or geographic focus.

2 investors

Clem' is a platform and technology provider for shared electric vehicle fleets and intelligent charging infrastructure. It operates an e-Maas (electric Mobility as a Service) solution that manages car-sharing services, charging station networks, and local energy management across French municipalities.

2 investors

Climate Impact Partners helps companies achieve climate goals through voluntary carbon market solutions and carbon project development. The company sources, evaluates, and delivers high-quality carbon credits that finance climate mitigation projects globally.

2 investors

Clir builds software that analyzes wind and solar energy production data to improve asset performance, health monitoring, insurance, and financing for renewable energy owners and investors. Founded by wind industry experts, it manages 350+ GW of wind and solar data for clients worldwide.

2 investors

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

2 investors

Cognition Controls provides smart building management solutions that optimize HVAC and refrigeration systems for government facilities, educational institutions, restaurants, and multisite operations. The platform enables remote monitoring, control, and energy optimization with embedded security features.

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