Energy Startups

Davidson Instruments develops fiber optic pressure measurement systems for harsh industrial applications, including sensing technology used with advanced combustion control systems for jet engines and other industrial combustion turbine engines. Its technology is aimed at reducing greenhouse gas emissions and improving fuel efficiency in turbine engines.

1 investor

Dawn Solar provides solar panel detachment and resetting services for roofing companies, handling the removal and reinstallation of solar panels during roof replacement or repair jobs. It targets roofers dealing with insurance-covered roof work involving existing solar installations.

1 investor

Daze designs and manufactures automated electric vehicle charging systems, including Dazeplug and Dazebox products, serving the electric mobility market across Europe.

1 investor

DBBS Technology develops patented "Zero-Mixing" HVAC technology that eliminates water mixing in building heating, hot water, and thermal storage systems to raise heating/cooling efficiency and cut energy use and emissions. Its solutions target building HVAC retrofits, domestic hot water, industrial process heat, solar thermal, geothermal, and combined heat and power installations.

1 investor

Decade Energy provides electrification solutions for mobility and fleet depots, including grid upgrades, battery storage, charging infrastructure, and energy optimization software. It focuses on securing long-term grid capacity for electric truck and fleet depots across Europe.

1 investor

DeCharge operates a decentralized, community-owned EV charging network where individuals can purchase chargers or provide liquidity to earn rewards from charging fees and network spreads. The platform uses blockchain technology to enable fractional ownership of charging infrastructure and allows EV drivers to access a global network of charging stations.

1 investor

Decom Engineering designs and deploys subsea and onshore "Chopsaw" cold-cutting tools and bespoke cutting systems for the offshore energy sector, including precision cuts on risers, conductors and mooring chains. The company serves oil and gas, industrial and energy transition operators, delivering projects across more than 10 countries.

1 investor

Deep Casing Tools develops downhole tools and technologies for oil and gas well construction, completion, and casing recovery, including its TurboCaser, TurboRunner, and Rubblizer products. It serves oil and gas companies aiming to reduce drilling time, cost, risk, and emissions across onshore and offshore projects, and operates as a division of Drilling Tools International (DTI).

1 investor

Deep Fission develops a nuclear reactor deployment system that places a pressurized water reactor about a mile underground in a deep borehole, using hydrostatic pressure for operating conditions and geothermal-style energy transfer to surface turbines. The company aims to reduce the cost and complexity of surface infrastructure and has signed letters of intent for power site partnerships totaling 18.5 GW.

1 investor

The Metals Company is developing polymetallic nodules on the seafloor as a source of base metals such as nickel, cobalt, copper and manganese for batteries and energy-transition infrastructure. It also processes these into battery-grade chemicals, copper cathode, and feedstock for manganese alloys and steel, serving energy, defense, manufacturing and infrastructure markets.

1 investor

Deep Isolation Nuclear, Inc. is a company whose stock trades on the OTCQB under the ticker DBHL. The page shown is an investor relations section listing SEC filings, quarterly results, and stock information.

1 investor

1 investor

DEEPINFAR provides underwater operation and inspection solutions for offshore oil, wind power, and other marine facilities using underwater equipment and engineering services.

1 investor

Deetken Impact is a Canadian investment fund manager focused on impact investing across Latin America and the Caribbean, deploying capital into businesses that deliver social, environmental, and financial returns. It invests in areas such as SME financing, women entrepreneurship, renewable energy, affordable housing, and healthcare, offering both capital and strategic advice to investees.

1 investor

Delair builds long-range professional drones and mission-planning software for inspecting and mapping linear infrastructure such as electric power transmission and distribution lines. Its systems, used by asset managers and subcontractors including French power operator RTE, integrate with data analytics platforms to assess infrastructure condition and support maintenance planning.

1 investor

Delfos provides an AI-powered monitoring platform for renewable energy portfolios that predicts failures and optimizes performance across wind and solar installations. The platform helps renewable energy operators reduce downtime, accelerate maintenance decision-making, and recover hidden revenue losses.

1 investor

Delta Green provides electricity suppliers with a flexibility aggregation platform and branded customer app that turns distributed household assets such as home batteries and solar into a virtual power plant. Aimed at energy retailers in Central Europe, its technology enables real-time energy monitoring, flexibility activations, and new revenue from residential customers.

1 investor

Delta Utilities provides natural gas distribution service to residential and business customers across Louisiana and Mississippi, supported by local teams. The company focuses on the Gulf South region, offering billing, account management, and safety resources.

1 investor

DENS develops and produces the Hydrozine generator along with modular, scalable battery systems, including mobile, stationary, and integrated battery solutions for clean power generation. Its systems serve applications such as construction, events, EV charging, water pumps, and bridging or increasing grid connections.

1 investor

Deployable Energy builds the Unity Nuclear Battery, a compact, modular, transportable 1 MW microreactor system that provides continuous clean power. It targets industrial, defense, humanitarian, and remote applications, and is preparing an initial reactor demonstration at Idaho National Laboratory.

1 investor

Dereknet builds Derek Suite, a software platform that serves as a single source of truth using consistent and verified production data to help engineering and leadership teams in the oil and gas industry make decisions. Its features include anomaly detection and continuous well rate measurement via a "Neuronet" system, covering measurement management from well to export.

1 investor

DevEngine provides development-stage capital and hands-on project development support to sustainable infrastructure and clean energy developers, co-investing at the ProjectCo level. It targets early development phases that traditional infrastructure investors typically avoid, serving project developers seeking both funding and operational expertise.

1 investor

Dexma is an energy intelligence software platform that makes building energy consumption visible, measurable, and manageable for organizations. Founded in Barcelona, it serves 10,000+ organizations across more than 35 countries and is now part of Spacewell, a Nemetschek Group company.

1 investor

Dhemax provides technology and consulting for fleet electrification, including a charge management system (CMS), a charging app with roaming integration, and preventive/corrective maintenance for EV chargers. It serves companies and transport operators (public transit, last-mile delivery, and collective transport fleets) across markets such as Spain, Portugal, Mexico, Chile, Colombia, Uruguay, and Panama.

1 investor