Energy Startups

Build To Zero develops thermal energy storage solutions, primarily ThermalBox®, that integrate renewable energy with long-duration thermal storage to decarbonize industrial heat processes and address solar variability. The company serves industrial customers seeking to reduce greenhouse gas emissions through electrification and energy storage technologies.

1 investor

BuildingLens offers SaaS tools for small to mid-sized buildings, including AirLens for indoor air quality monitoring and EnergyLens for energy management. The company focuses on serving priority populations with limited access to healthy, automated buildings in the U.S.

1 investor

BuildScience offers software for commercial building owners and operators to manage building operations and tenant services. The company states its platform has been deployed in a 1M sq.ft. Class A office building to reduce operating costs and improve tenant satisfaction.

1 investor

Builtech is a service group that consolidates building services engineering (TGA) companies in Germany, focusing on heating, sanitary, electrical, HVAC, refrigeration, and ventilation work. It supports energy-efficient construction and renovation and offers business succession to TGA tradesmen through its network and management.

1 investor

Buoyant Ventures is an early-stage venture fund that invests in seed and Series A companies developing AI, software, and hardware solutions for climate resilience, resource efficiency, and decarbonization. The firm operates primarily in the U.S. and Canada, providing capital and access to a network of executives from energy and industrial enterprises.

1 investor

Burnstar produces turquoise hydrogen using natural gas feedstock combined with carbon capture and storage technology to create zero-emission hydrogen for industrial and energy sector customers.

1 investor

Burn Stoves manufactures cookware and grills in Kenya using local production to reduce costs. The company produces stainless steel cookware sets and charcoal-compatible grills designed for durability and affordability.

1 investor

Southwire is a leading North American manufacturer of wire and cable solutions for building, utility, industrial and data center applications. The company produces building wire, metal-clad cable, utility products, portable cord products and engineered electrical solutions.

1 investor

Buttimer Engineering designs and delivers customized engineering solutions for pharmaceutical, data center, food & beverage, port infrastructure, energy, and manufacturing sectors. Operating internationally with facilities across Ireland, the UK, Poland, and the UAE, the company provides mechanical, electrical, controls, and automation services.

1 investor

BWTS Energy Services provides inspection, maintenance, and repair services for renewable energy installations including wind turbines, photovoltaics, biogas, e-mobility, and hydrogen systems. The company operates a national network of decentralized service technicians serving operators of renewable energy assets in Germany.

1 investor

MMT develops nondestructive testing instrumentation to measure mechanical properties of oil and gas pipelines without service interruption, using patented frictional sliding technology and AI modeling. The company serves pipeline operators and regulatory agencies seeking to extend infrastructure life while reducing testing costs and ensuring safety.

1 investor

Bynry offers utility billing software that automates meter-to-cash workflows for water, electric, and gas utilities, providing real-time monitoring, pre-validation, error flagging, multi-channel bill distribution, and ledger integration.

1 investor

Connected Energy builds scalable energy storage systems that repurpose used EV batteries into second-life energy assets, serving organisations and partners across the UK and Europe. The company operates in the energy storage and cleantech sector.

1 investor

C-SAM provides configurable operational software for asset management and maintenance across multiple industries, with a primary focus on energy, marine, and aviation sectors. The platform enables organizations to track, manage, and optimize assets ranging from small items to high-value equipment worth millions of pounds.

1 investor

C-COM Satellite Systems designs and manufactures auto-pointing mobile satellite antenna systems, including its iNetVu vehicle-mount and flyaway terminals and portable Manpack antennas, providing satellite broadband connectivity in remote locations. It sells through a global dealer and integrator network to vertical markets such as cellular backhaul, disaster recovery, film production, and the military, and is developing next-generation electronically steerable flat-panel phased array antennas.

1 investor

C1 Connections manufactures fasteners and connection systems for wind turbine towers, enabling developers and fabricators to build high-capacity tubular steel connections with local production flexibility. The company offers customized fastener designs and proprietary connection technology for wind power infrastructure.

1 investor

The Center for Climate and Energy Solutions (C2ES) is a nonprofit organization focused on climate policy, working to accelerate the transition to net-zero greenhouse gas emissions through reports, briefs, and policy recommendations. It engages foundations, governments, individuals, and businesses to advance pragmatic climate action, primarily in the United States.

1 investor

Cadmus provides advisory and implementation services to government, commercial, and private organizations, using digital solutions and domain expertise to help clients achieve strategic goals and drive organizational change.

1 investor

Caithness Energy is an independent power producer that develops, acquires, and operates utility-scale power generation assets across North America, including renewable energy projects in wind, solar, and geothermal as well as natural gas generation. The company maintains a portfolio of over 1,050 megawatts of operational and development-stage projects.

1 investor

Caltec designs patented surface jet pump and compact separation technologies used in the oil and gas industry to boost production and reduce emissions. Its passive systems have no moving parts and can be retrofitted to existing facilities to improve efficiency.

1 investor

Calumix is a nanotechnology company that produces advanced carbon-coated aluminum current collectors for lithium-ion batteries, offered as a drop-in solution to improve rate performance and calendar life while reducing stack height. It serves North American battery cell makers and also applies its coating materials platform to other uses such as free chlorine sensing.

1 investor

Cambridge Heavy develops compact inertial confinement fusion machines designed to produce tritium, a critical fuel required to power next-generation fusion reactors. The company targets the global fusion industry with benchtop-scale systems that address the severe shortage of tritium supply.

1 investor

Candela designs and builds electric hydrofoil vessels that use significantly less energy than traditional boats, serving both private and public transportation markets. The company develops batteries, motors, and control systems to eliminate fossil fuels from marine transportation.

1 investor

A locally owned HVAC, plumbing, and electrical contractor providing installation, repair, and maintenance services for residential and commercial customers in the Cape Cod area. The company emphasizes energy efficiency, safety, and 24/7 support across heating, cooling, indoor air quality, and electrical systems.

1 investor