Energy Startups

Cibicom is a Danish communications infrastructure company, active since 1925, that designs, develops and operates communication solutions with high requirements for security and service. It also provides colocation in secure Danish data centers and sells green electricity sourced from Nordic wind and hydro power.

1 investor

A joint venture between Masdar (UAE) and Taaleri Energia (Finland) developing and operating renewable energy projects, specifically wind parks, in Serbia and Montenegro.

1 investor

Designs and installs solar energy systems for commercial property owners and consumers, and offers energy management software.

1 investor

Citera is a digital energy and emissions consultancy paired with a software platform that automates utility data collection, extracts information from unstructured documents, and produces regulatory and ESG reporting plus custom dashboards. It serves real estate companies and other energy-intensive organizations with services spanning audits, ISO 50001 readiness, and decarbonization planning.

1 investor

The Citizens Utility Board of Michigan (CUB) is a consumer advocacy organization that represents residential utility customers in Michigan, working to keep electricity and natural gas bills reasonable and the electric system reliable. It intervenes in energy rate cases and publishes reports ranking Michigan utilities on reliability, affordability, and environmental impact.

1 investor

Cladtek operates a world-class manufacturing process centered on operational excellence, with a proprietary iN-Shield program designed to ensure quality, safety, and continuous improvement across operations.

1 investor

Clairco provides IoT sensors, AI-powered dashboards, and HVAC optimization solutions for indoor air quality management and energy efficiency in buildings. The company serves facility managers and building operators through hardware sensors, real-time analytics, and proprietary filtration technology.

1 investor

Sweco is an architecture and engineering consultancy providing services in urban development, mobility, energy, water management, buildings, and ecology for public and private clients. It combines international expertise with local presence, with a focus on the Netherlands and broader European market.

1 investor

Claro Energy is an Indian solar company that designs and installs solar solutions including irrigation pumps, industrial and residential rooftop systems, and energy storage. It primarily serves farmers, homeowners, and commercial and industrial clients across India, and pioneered a pay-per-use "Irrigation-as-a-Service" model for farmers.

1 investor

The Clean Energy Transition Institute is an independent, nonpartisan nonprofit that produces research, decarbonization studies, and regional convenings on clean energy and deep decarbonization pathways. It focuses on an equitable energy transition across the four U.S. Northwest states of Idaho, Montana, Oregon, and Washington.

1 investor

Clean Energy Ventures is a venture capital firm that invests in climate and clean energy companies with scientifically-proven technologies and clear commercialization paths.

1 investor

Clean Harbors provides environmental, waste management, and industrial services, including hazardous waste disposal, recycling, chemical packing, emergency response, and field and specialty services. It serves industries such as chemical manufacturing, energy, healthcare, pharmaceuticals, government, refining, and transportation across the United States, Canada, and internationally.

1 investor

CleanCapital develops, constructs, owns, operates, and invests in small-scale solar and energy storage projects for businesses, schools, non-profits, and communities. Founded in 2015, it operates one of the largest U.S. portfolios of distributed solar projects, serving customers across 30 states and U.S. territories.

1 investor

Clean Energy Credit Union is a federally chartered credit union that provides financing for clean energy projects, including solar systems, electric vehicles, and energy-efficient home improvements. It serves members who are part of its field of membership, including employees or members of clean energy and environmental organizations.

1 investor

Clean Energy Systems develops power generation systems based on rocket engine combustion technology that enable efficient cogeneration of power, steam, water, and CO2 for cleaner energy production.

1 investor

CleanMax (Clean Max Enviro Energy Solutions Limited) develops clean energy infrastructure and sustainable energy solutions to help industries and large corporates reduce their carbon footprints. It serves Fortune 500 global corporates with green energy generation capacity and ESG-focused offerings, and is based in India.

1 investor

Cleantech for Europe is an initiative advocating for the deployment of domestic clean electricity and heat in Europe, publishing open letters and campaigns on topics such as geothermal energy, energy security, and decarbonisation.

1 investor

Clear Blue Technologies develops Smart Off-Grid power technology and Energy-as-a-Service solutions for cost-efficient, remotely managed power systems serving municipal lighting, telecom infrastructure, and satellite internet across 55+ countries. The company operates a utility-model business with a proprietary cloud platform that monitors and maintains systems with 99.5% average uptime.

1 investor

Clear Solar develops dust mitigation technology for solar panels that operates without water or harmful chemicals, drawing from aerospace engineering expertise. The company targets solar operators globally to improve panel efficiency and reduce operational costs.

1 investor

CLEMAP provides intelligent energy and charging management for businesses, connecting EV charging infrastructure, photovoltaics, and storage into a flexible energy system. Its manufacturer-independent local and cloud-based load management handles charging processes from a single charge point to entire fleets, with real-time monitoring and dynamic tariffs.

1 investor

ClevAir provides software that automates and optimizes HVAC and ventilation in commercial buildings in real time based on occupancy, air quality, and weather, aiming to cut energy use and CO₂ emissions while maintaining indoor climate. Its platform includes a dashboard, secure 4G gateway, and sensor integrations (BACnet, MQTT, LoRaWAN), working with or without an existing building management system, and enables demand response and grid participation.

1 investor

clever bioTechnologies develops software that uses AI and mechanistic (hybrid) models to help biogas plant operators optimize feeding schedules, run combined heat and power units on demand, and monitor reactor stability in real time. It targets biogas plant operators in Germany, aiming to keep plants profitable through market-oriented electricity production as subsidies decline.

1 investor

The Climate Club is an intergovernmental forum where governments cooperate on accelerating industry decarbonisation, with an initial focus on emission-intensive sectors such as steel and cement. It coordinates mitigation policies, aligns industrial standards and markets, and supports technical and financial assistance for emerging markets and developing economies.

1 investor

Climate Investment is a venture capital firm that invests in companies developing decarbonization technologies across methane reduction, energy efficiency, and carbon capture, utilization, and storage sectors. The firm provides capital, strategic support, and access to a global network to help portfolio companies scale and achieve measurable greenhouse gas emissions reductions.

1 investor