Energy Startups

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

ICA-Finance is a consultancy working on gas flare reduction, climate change, and carbon finance projects, including CDM and carbon offsets for the oil sector. It has been involved since 2005/2007 and participates in Norwegian–Iraqi bilateral cooperation on oil sector management, with offices in Oslo and Lagos.

1 investor

Cladtek manufactures corrosion-resistant alloy clad piping systems and connectors for subsea, onshore, and emerging energy applications including oil and gas, carbon capture, and geothermal projects. The company produces mechanically lined pipes, weld overlay clad pipes, and related fabrication services for high-pressure pipeline environments.

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

Claros develops hardware and software for power delivery and management in data centers, aimed at increasing compute density and energy efficiency for AI applications. Its systems target data center operators and edge devices, in the power management and energy technology category.

1 investor

Clean Energy Ventures is a venture capital firm that invests in early-stage climate and decarbonization technology companies, backing founders who combine defensible science with commercial fundamentals. The firm provides engineering and operating support to help portfolio companies scale from pilot to full commercialization.

1 investor

Clean Energy Credit Union is a member-owned, online-only credit union that offers savings accounts, rewards checking, and certificates alongside financing for solar systems, electric vehicles, and green home improvements. It serves individuals seeking banking and clean energy loans, with all deposits used to fund clean energy loans for members.

1 investor

Clean Energy Systems (CES) develops high-pressure oxyfuel-based thermal power generation technology with integrated CO₂ capture, using its proprietary platelet burner to produce dispatchable, zero-emission, zero-NOx power from a wide range of gas streams. Its ZEUS project targets converting high-CO₂ and stranded natural gas reserves into clean power for onshore and offshore deployment.

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 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

Clear Blue delivers managed off-grid solar power and lighting systems with cloud-based monitoring and 24/7 remote management for municipalities, telecom operators, and critical infrastructure globally. The company provides energy-as-a-service that replaces diesel generators and grid connections with utility-grade reliability and cost-competitive pricing.

1 investor

CLEAResult provides energy-efficiency and sustainability services to businesses and utilities, including distributed energy resource solutions, fleet electrification, strategic energy planning, and 80 PLUS power-supply certification. It offers consulting, data-backed energy transition roadmaps, and digital tools such as ChooseEV to support EV adoption.

1 investor

Clearfork Midstream provides midstream gathering, treating, and transportation services for natural gas producers operating in the Haynesville Shale, moving gas to U.S. market hubs including Gulf Coast LNG export facilities.

1 investor

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.

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

Climate Impact Partners helps companies of all sizes meet sustainability goals through carbon credits, energy attribute certificates, and sustainable aviation fuel. It operates in the carbon markets as an advisor and solutions provider for corporate emissions reduction.

1 investor

Climate Investment is a venture-to-growth equity investor backing climate-focused technologies in high-emission sectors such as energy, industry, built environments, and transportation, with the aim of delivering measurable greenhouse gas reductions. Established by members of the Oil and Gas Climate Initiative (OGCI), it combines capital with industry partnerships to accelerate commercial deployment and market adoption.</parameter> <parameter name="founders">[]

1 investor

Climate Pros provides commercial refrigeration and HVAC installation, maintenance, and repair services for grocery stores, supermarkets, convenience stores, pharmacies, and cold storage facilities. The company develops in-house software for diagnostics and real-time monitoring, and operates across all 50 U.S. states.

1 investor

ClimateWells generates energy transition carbon credits by paying oil and gas operators to permanently shut down marginal, low-production wells earlier, cutting methane emissions and restoring local communities. It targets marginal wells that account for a small share of production but the majority of oilfield methane emissions, serving carbon credit buyers and the energy sector in the U.S.

1 investor

Cling Systems is a brokerage service for surplus and end-of-life batteries, helping manufacturers and battery holders assess, price, and sell inventory to qualified buyers globally. It handles the full transaction including inventory valuation, buyer matching, compliant logistics and shipping, and settlement.

1 investor

Clockwork provides a reliability and diagnostics layer for EV charging networks, integrating with existing charge management systems to detect and resolve operational issues before they impact drivers.

1 investor