Energy Startups

Connecticut Electric manufactures and sells newly built, ETL-listed replacement circuit breakers compatible with legacy load center brands such as Zinsco, Federal Pacific, Challenger, Pushmatic, and Wadsworth. It also offers RV power products (cords, adapters, outlets) and EmerGen manual generator transfer switches for home backup power.

1 investor

CONNEXX SYSTEMS is a Japanese startup developing energy-storage batteries and a networked storage system ("Power Net") that links distributed batteries and renewable sources like solar and wind into a unified energy network. It aims to enable energy independence, stable electricity supply, and disaster resilience.

1 investor

ConocoPhillips is an independent oil and gas exploration and production (E&P) company that explores for, produces, transports, and markets crude oil, bitumen, natural gas, natural gas liquids, and LNG across 14 countries. It operates worldwide with production positions in regions including Alaska, the U.S. Lower 48, Norway, Qatar, Canada, and Australia.

1 investor

Conservice provides managed utility services for property owners and managers, handling utility bill payment, tenant billback, and regulatory compliance. It pairs a proprietary software platform with expert staff to deliver utility usage data, reporting, and integrations with property management software.

1 investor

Constellation Navigator provides energy and utility data, software, and advisory services to help organizations manage energy costs, operational performance, and sustainability goals. The platform is offered to organizations regardless of their energy supplier.

1 investor

Celerity is a risk optimization and consulting company that analyzes utility data to help public electric and gas utility organizations mitigate risk, optimize assets, and manage projects. It provides risk management, data analysis, strategic consulting, project management, and utility vegetation management services.

1 investor

Continental Battery supplies and distributes automotive and vehicle batteries through a nationwide network of dealers, serving business, retail, and supplier partners. The company also recycles or reconditions its batteries and has operated in the battery industry since 1932.

1 investor

ContourGlobal develops clean and renewable power generation to meet growing electricity demand and support a transition away from fossil fuels. The company operates in the energy sector with a focus on renewable and low-carbon power production.

1 investor

ContractPower is an AI contract intelligence platform built for the U.S. renewable energy sector, extracting compliance obligations from energy agreements such as PPAs, LGIAs, BESSAs, and O&M contracts and turning them into tracked tasks with reminders and clause-level citations. It serves asset managers, developers, deal teams, legal counsel, finance/tax equity teams, and EPC/O&M teams managing contract compliance across project portfolios.

1 investor

Contract Resources provides industrial services and transitional solutions for complex industrial sectors, including work involving new technologies such as hydrogen. It serves industrial clients with a focus on maintaining and improving performance across evolving industry needs.

1 investor

Convenient Power designs semiconductor integrated circuits for power management and wireless charging, including wireless charger transmitters and receivers, Qi ICs, flyback and synchronous rectifier controllers, and GaN-integrated devices. It also offers automotive-grade products such as wireless chargers, fast-charging protocol ICs, LED lighting drivers, eFuse protection, and high/low side switches.

1 investor

Convion develops solid oxide fuel cell systems for distributed power generation in industrial and commercial applications, offering clean and efficient energy production. The company provides sustainable power solutions for energy security and fuel flexibility, operating as part of HD Hydrogen.

1 investor

Cool Block is a community program that guides households and neighborhood blocks through practices to reduce their carbon footprint, prepare for energy blackouts and natural disasters, conserve water, and build community resilience. It is organized as a multi-chapter journey covering energy resilience, sustainable lifestyle, transportation efficiency, water stewardship, and neighborhood engagement.

1 investor

Coolbrook develops patented RotoDynamic Technology, including an electric RotoDynamic Heater (RDH) and RotoDynamic Reactor (RDR), to electrify high-temperature industrial processes reaching up to 1700°C. It targets hard-to-abate heavy industries such as cement, steel and iron, petrochemicals, and chemicals to replace fossil-fired heating and cut CO2 emissions.

1 investor

CooliBlade develops integrated air-cooling thermal management products, including its NEOcore thermosyphon heatsink technology, for high-power electronics. Its cooling solutions serve industries such as EV charging, renewable energy, battery energy storage, power modules, and 5G telecommunications.

1 investor

CoolPlanet offers a software platform combined with expert consultancy that gives industrial energy teams a single source of truth for energy, carbon, and cost data across multiple plants. It provides real-time energy monitoring, anomaly detection, ESG and carbon reporting, and decarbonisation strategy support, connecting to existing energy meters, IoT devices, and operational data.

1 investor

Cooperative Energy Futures (CEF) works on community energy systems through outreach, engagement, and legislative advocacy. The organization involves community members in energy initiatives, including work related to public utility commission legislation.

1 investor

Copec EMOAC is the energy arm of Copec that supplies 100% renewable electricity to large and medium-sized "clientes libres" (unregulated business customers) in Chile. It also provides energy management, digital monitoring, efficiency advisory, and electrical project services across various industries.

1 investor

Copec Flux provides energy solutions including engineering, installation, and maintenance for HVAC, heating, and security systems, as well as electric vehicle charging infrastructure and electrical services. It serves households, industrial clients, and large-scale projects in Chile.

1 investor

Copenhagen Atomics is a Danish nuclear energy company developing thorium molten salt reactors designed for mass manufacturing, sold to nuclear power plant owners as fixed-price 100 MWth reactor units with fuel supply and maintenance. Founded in 2014 and based near Copenhagen, it has built prototype reactors and targets low-cost electricity, with its first test reactor planned for 2028.

1 investor

The page presents analysis and policy conclusions on building an integrated European energy system, focused on electrification, grids, system flexibility and homegrown clean energy infrastructure across Europe.

1 investor

Copenhagen Offshore Partners (COP) develops offshore wind projects from origination through construction and operations, working with local communities, governments, and strategic partners. It operates a global portfolio of offshore wind and new energy projects across markets including Europe, Japan, and Korea.

1 investor

IFS Copperleaf provides enterprise decision analytics and asset investment planning software that helps electric utilities evaluate, optimize, and prioritize capital investment portfolios across their asset base. Its AI-powered optimization and value frameworks let transmission and distribution utilities manage risk, plan for the energy transition, and align investments with strategic, ESG, and net-zero goals; it integrates with EAM, APM, ERP, and GIS systems.

1 investor

Delivers state-of-the-art magnetics to enable power electronics components that are 90% smaller and 50% more efficient

1 investor