Energy Startups

dstelecom builds and operates fibre-optic network infrastructure in Portugal, focused on extending broadband connectivity to lower-density and interior regions. It aims to reduce regional disparities by expanding digital access for people and businesses in these territories.

1 investor

Manufacturer of advanced materials for semiconductors, displays, batteries, and pharmaceutical intermediates. Supplies core materials to technology and life-science manufacturers, targeting the global semiconductor and energy markets.

1 investor

Ductor builds and operates facilities that convert agricultural waste into sustainable organic fertilizers and biogas for renewable energy production. The company serves the agriculture and energy sectors with circular economy solutions.

1 investor

DUG is an energy and geophysics technology company that develops software and solutions for seismic data acquisition, processing, and interpretation in the oil and gas sector. The company serves exploration and production companies worldwide.

1 investor

Dunamis Energy develops and operates oil and gas assets in Colorado with backing from EnCap Energy Capital Fund XII.

1 investor

Duos Energy, a subsidiary of Duos Technologies Group (Nasdaq: DUOT), builds, owns, and operates off-grid and fast-track power plants in the U.S. to supply on-site electricity for edge data centers with AI-ready loads and industrial clients in sectors such as manufacturing, oil and gas, and mining. Its rapid-response power plants can be deployed in as little as 90 days to bypass constraints of overburdened utility grids.

1 investor

Dyme is a travel platform that directs booking profits to fund solar energy projects for schools and hospitals in underserved communities. The company combines sustainable travel with renewable energy deployment to reduce carbon emissions.

1 investor

DynaIndustrial is a fully integrated machining and fabrication company serving mining, steel, pipe, oil and gas industries with custom design and build projects, heavy industrial equipment repair, and medium-volume component production. Founded in 1976, the company operates with in-house engineering and state-of-the-art manufacturing capabilities across Saskatchewan, Canada.

1 investor

1 investor

Dyneon develops and manufactures high-performance fluoropolymers — including PTFE, fluorothermoplastic, and elastomer grades — for demanding applications requiring chemical resistance, purity, and thermal stability. Its materials serve industries such as medical, mobility, energy, communication, and chemical processing, with manufacturing based in Europe.

1 investor

E-battery Systems develops and operates safety-critical energy systems including high-voltage batteries, power electronics, and energy storage infrastructure for defense, industrial, medical technology, and energy sectors. The company operates through three integrated divisions: engineering (embedded electronics and software), battery and electronics systems, and energy and service systems.

1 investor

E-Heat builds and operates data centers that capture waste heat from server equipment and feed it into district heating networks or the heating systems of large building complexes. It supplies heating companies, industrial complexes, and greenhouses in Finland with waste-heat-based heat sources ranging from 0.5 to 10 megawatts.

1 investor

E-magazyny.pl is a Polish-language online media outlet covering the energy sector, with a focus on energy storage (BESS), renewables, hydrogen, electromobility, nuclear and conventional power. It publishes news, expert commentary, interviews and conference coverage for professionals following Poland's energy transition.

1 investor

E&E News is a journalism outlet providing original reporting on energy and environmental policy, regulation, and innovation for professionals. The publication covers topics including climate policy, electric utilities, renewables, federal agencies, and corporate sustainability.

1 investor

e2Companies provides Virtual Utility, combining on-site power generation and battery storage hardware (the R3Di system) with AI-powered software and Grove365 monitoring to deliver reliable, cost-effective power. It serves mid-sized to large organizations using at least 1 megawatt of power that require continuous, uninterruptible energy for critical operations.

1 investor

EAG Bioenergy operates and develops bioenergy assets—including biogas, biomethane, and biofertilizer projects—across the UK and Ireland. The company acquires, builds, and manages a renewable energy portfolio aimed at supporting decarbonisation and resource security.

1 investor

EarnDLT provides a platform for energy and commodity companies to measure, verify, and trade environmental attributes data as digital tokens, enabling producers to monetize verified emissions reductions and prove sustainability commitments to buyers.

1 investor

EarthEn develops thermo-mechanical, long-duration energy storage systems that use CO₂ in a closed-loop process to store between 4 and 100+ hours of energy for grid and renewable energy applications. Its "Pods" are designed as a scalable, safe alternative to traditional batteries for supporting 24/7 renewable power.

1 investor

Earthrise Energy designs, finances, builds, operates, and maintains energy assets. Its leadership team focuses on the development and management of energy infrastructure.

1 investor

EarthView develops BluBird, a continuous emissions monitoring system that detects, locates, and quantifies gas leaks in real time. The product targets industrial energy operations seeking to reduce emissions and meet sustainability goals.

1 investor

Eastcastle Infrastructure builds and operates build-to-suit telecom towers and related infrastructure for mobile network operators, serving markets in the Democratic Republic of Congo and Nigeria. The company also acquires and manages existing tower portfolios across African countries.

1 investor

Irimoku develops China's first domestically-manufactured heavy-duty mining trucks with integrated power systems, designed for operations in open-pit mines, steel mills, and large-scale water engineering projects. The company offers rigid dump truck models (EM186H, EM216H, EM260) with hybrid electric, pure electric, methanol range-extension, and hydrogen range-extension powertrain options.

1 investor

Austere Environmental builds remediation machinery that separates liquids from solids to recover petroleum, water, and reusable minerals from oil and gas drill cuttings and contaminated soil, returning clean soil to the environment. It serves upstream oil and gas operators and other heavy industries with applications in decontamination, dewatering, and mineral processing.

1 investor

EC Energy Technologies is a company associated with a product called Certia. The available page content does not describe what the company builds, who it serves, or its industry.

1 investor