Energy Startups

Steelhead LNG is a developer and licensor of a patented floating LNG export facility design (At-Shore LNG) that reconfigures traditional onshore LNG plant elements to lower cost and carbon footprint. It targets LNG project proponents, licensing its modular, air-cooled, electric-driven facility design for the natural gas liquefaction and export industry.

1 investor

Steeper Energy develops core technologies and engages in commercial project development, with a team of scientists and engineers working from locations in Denmark and Canada.

1 investor

Steve Vick International (SVI) provides trenchless technologies, equipment hire, and specialist contract services used to renew and maintain underground utility infrastructure across the gas, water, and nuclear industries. Founded in the UK, the company manufactures signature technologies such as live gas mains insertion and serves utility operators through distributors in multiple countries.

1 investor

Stimline provides software and automation systems for oil and gas well completion and intervention operations, including its IDEX collaboration platform used by energy and service companies for drilling, completion, intervention, and P&A. Its products cover automated wireline, coiled tubing, and carbon rod systems as well as digital planning and rig-site execution tools.

1 investor

Standard Energy develops vanadium ion battery technology for the energy storage market, departing from conventional battery approaches to create novel battery chemistry solutions.

1 investor

STOFF2 produces green hydrogen through zinc intermediate step electrolysis, a technology that combines hydrogen generation with energy storage using renewable sources like solar and wind. The system reduces hydrogen production costs by using electricity during periods of surplus renewable generation and operates without requiring critical materials like platinum, cobalt, or lithium.

1 investor

Stone designs and manufactures power generation turbines from the ground up, starting with natural gas turbines shipping in 2027, followed by steam, geothermal, and advanced cycles. The company aims to rebuild industrial manufacturing capacity for large-scale turbine production.

1 investor

Stone Ridge Asset Management is an institutional asset manager that co-invests alongside leading endowments and family offices in differentiated alternative asset classes. The firm sources and structures investment vehicles in opaque markets while applying proprietary data and disciplined risk management.

1 investor

Storio Energy develops and operates battery energy storage systems (BESS), using battery optimization and algorithms to support grid services such as France's secondary reserve (aFRR). The company focuses on enabling a fully low-carbon powered world and operates primarily in France.

1 investor

Stormentum designs home energy storage systems with a focus on reducing costs through storage-first architecture, targeting residential adoption of modern energy systems.

1 investor

The Canadian Strategic Missions Corporation (CSMC) is a space and defence company developing dual-use technologies through two subsidiaries: CSMC Nuclear, which builds portable micro-nuclear reactors for remote environments, and CSMC Labs, an R&D division commercializing deep-tech in quantum, robotics, nano-materials, and space systems. Its nuclear reactors serve Canadian defence, Indigenous communities, and space exploration.

1 investor

StreamTECH provides workforce management and operational compliance software for field-based businesses, initially built for oil & gas but expanded to serve multiple industries. The platform handles scheduling, time tracking, compliance reporting, and equipment management with a focus on reducing manual work and improving operational visibility.

1 investor

Strobe provides software and grid-edge hardware to design, monitor, and autonomously operate distributed energy assets—batteries, solar, and generators—as a single market-aware power plant. Its platform simulates and right-sizes systems, dispatches assets in real time, and bids them into wholesale energy, capacity, and ancillary markets such as NYISO.

1 investor

Stromdao provides consulting services to municipal utilities and distribution network operators to translate technical infrastructure measures into regulated financial planning and governance-ready investment decisions.

1 investor

Subatomic is focused on restoring domestic uranium supply in the United States.

1 investor

Subcritical Systems develops accelerator-driven nuclear energy systems that use a particle accelerator to sustain fission in a subcritical core for electrical power generation in the US. The technology is designed to be inherently safe with no criticality potential and cost-competitive with natural gas.

1 investor

Subra develops scalable superconductor solutions aimed at improving energy transmission and infrastructure. The company positions its technology as supporting clean, connected, and carbon-free energy systems.

1 investor

Summit Nanotech develops an integrated Direct Lithium Extraction (DLE) platform, called denaLi, combining a multi-column extraction system, its eLivate DLE sorbent, and multi-physics predictive modeling to recover lithium from brine with low water use. It serves the mining, oil & gas, and battery industries, with regional testing hubs in Denver, USA and Santiago, Chile.

1 investor

Summit Ridge Energy is a commercial solar power producer that develops, finances, and operates solar projects across the United States, with a focus on community solar and energy independence. The company serves businesses and communities by providing locally generated solar power while emphasizing U.S.-based manufacturing and supply chains.

1 investor

Summit Lithium develops direct lithium extraction (DLE) technology to produce lithium at lower cost and with reduced environmental impact compared to conventional methods. The company serves battery and energy transition markets with a focus on water efficiency and smaller surface footprints.

1 investor

Sun Exchange finances, designs, installs, insures, and maintains solar systems for schools, farms, retirement homes, nonprofits, and other organisations, which then pay only for the solar energy produced. Founded in 2015, the company operates in South Africa.

1 investor

Sunbird Énergie designs and delivers solar energy installations, guiding clients through the technical decisions of their solar projects. It serves businesses undertaking energy projects.

1 investor

SunCommon is a solar installation and energy company serving homeowners and communities in Vermont and New York to help address the climate crisis. Operating as a certified B Corp and Benefit Corporation, the company combines commercial solar deployment with local community engagement and climate advocacy.

1 investor

Sunday Power operates at the intersection of real estate and renewable energy, serving the property sector with expertise in energy solutions. The company brings together developers, engineers, and advisors with backgrounds in technology, renewable energy, and real estate.

1 investor