Energy Startups

Fluence provides energy storage products and turnkey battery storage systems for industrial applications, including utilities and data centers. Its offerings, such as the Smartstack AC-based storage platform, are aimed at grid operators and data center operators needing grid-stable power and AI-optimized renewables and storage.

2 investors

Fluid Efficiency develops a removable drag reducing agent for natural gas liquids pipelines that increases throughput without fouling downstream equipment. The product enables pipeline operators to increase capacity from existing infrastructure without major capital investment.

2 investors

Focused Energy commercializes fusion ignition technology to develop the first commercial laser fusion power plant. The company applies breakthroughs from Lawrence Livermore's 2021 ignition milestone to build fusion energy generation infrastructure.

2 investors

Focused Energy is developing laser-based fusion technology to build a commercial fusion power plant, working toward delivering fusion energy to the electric grid. The company is founded by scientists involved in achieving fusion ignition and engineers from projects such as NIF, LLE, and ASML.

2 investors

Furbnow provides independent home energy efficiency assessments and advice for homeowners, sending qualified retrofit assessors to survey homes and delivering phased upgrade plans (a "BuildPack") covering insulation, ventilation, and heating systems. It also connects homeowners with vetted contractors and installers, operating in the UK.

2 investors

Fusebox offers an operating system for virtual power plants (VPPs) that provides site-level optimization, real-time dispatch, and ancillary market workflows for managing distributed energy flexibility. It is hardware-agnostic and connects to existing assets via standard industrial protocols and open APIs, serving utilities, energy traders, and independent aggregators across European ancillary markets.

2 investors

Fusion Energy Partners is a consultancy that advises on fusion energy across the full research, development, and operation lifecycle. It uses an in-house team of experts and a wider network to provide guidance on fusion power plant concepts and related technical issues.

2 investors

Galatea provides a technology platform for the energy industry to digitalize, optimize, and automate transportation and logistics workflows for waste, water, and commodity operations. It offers digital forms, operational visibility, and automation tools to producers, transporters, and receivers to improve compliance, reporting, and cost efficiency.

2 investors

Gazelle develops a modular floating offshore wind platform with a dynamic mooring system designed to be lighter, smaller, and easier to deploy for deep-water wind energy generation. The company targets the offshore wind energy market, with platforms assembled at port facilities.

2 investors

Genesis Digital Assets builds and operates data center infrastructure for high-performance computing workloads. The company designs purpose-built facilities with a focus on durability, energy efficiency, and community engagement.

2 investors

GenServe provides maintenance and repair services for commercial generators across all brands. It also runs GenServe University, a training program for generator maintenance technicians.

2 investors

Geothermal Technologies, Inc. (GTI) develops a subsurface geothermal energy harvesting system that integrates drilling, seismic imaging, downhole fiber optics, electromagnetic geophysical imaging, and ORC power generation to produce baseload electricity. The company aims to build geothermal power plants that address the limitations of prior Enhanced Geothermal System (EGS) efforts.

2 investors

Gigforce is a field-first EV charging infrastructure company that handles site surveys, DISCOM approvals, installation, commissioning, and long-term maintenance for charging sites across India. It works with EV OEMs, charge point operators, fleet operators, power and energy firms, commercial property owners, and enterprises.

2 investors

Gisual provides an API that delivers near real-time commercial power outage data into network operations tools, letting telecoms and managed service providers automatically triage outage issues, attribute problems to power rather than network, and avoid unnecessary truck rolls. It integrates with platforms such as ServiceNow, SolarWinds, IBM Netcool, Remedy, and ScienceLogic.

2 investors

Glow finances and deploys solar energy installations across multiple continents to reduce carbon emissions at scale. The company uses a protocol-based approach to coordinate solar projects ranging from residential systems to utility-scale farms serving institutional and individual investors.

2 investors

GoPowerEV offers a subscription-based EV charging service for multifamily apartment communities, installing in-space chargers in residents' own parking spots. Its hardware and software solution uses a two-step "EVReadiBase" to "PowerPort" approach to prepare properties for future EV demand while lowering installation and operating costs for property owners.

2 investors

Graphitic Energy uses an improved methane pyrolysis process to split natural gas into clean hydrogen and solid carbon (graphite), aiming to produce hydrogen without CO2 emissions or renewable electricity. The hydrogen and graphite serve industrial applications such as refining, ammonia synthesis, and steel making.

2 investors

Green Fusion offers a software platform for heating and energy management that monitors, controls, and optimizes heating systems and sector-coupling installations (gas heating, district heating, CHP, heat pumps, PV, storage) across a real estate portfolio. It serves the housing/real estate sector, primarily in Germany, and its system is TÜV-certified under §71a of the German Building Energy Act (GEG).

2 investors

Green Gravity develops, installs and operates gravitational energy storage systems that use disused mine shafts to provide long-duration energy storage. The company targets the renewable energy and mining sectors, positioning its technology as a low-cost, circular-economy alternative to chemical battery storage.

2 investors

Greencode Ventures is a European venture capital fund investing from Seed through Series A in applied AI solutions for energy systems, industrial operations, and critical infrastructure. As a VC firm rather than an operating company, it backs founders building companies in the energy transition space.

2 investors

GreenLancer operates an online marketplace connecting solar and EV charging station contractors with PV engineers and designers for standardized permit design, engineering, repair, and maintenance services. It serves solar contractors, EPCs, homeowners, and financial institutions managing solar assets across the United States.

2 investors

GreenLIB offers Refinement-as-a-Service (RaaS) for battery recycling, using thermal pre-treatment to upgrade contaminated black mass into clean, high-purity material and recover valuable metals such as nickel, cobalt, lithium, and graphite. It serves EV OEMs, battery manufacturers, shredders, MHP producers, and refiners through flexible material-return models with no CAPEX for the customer.

2 investors

Greensparc builds modular, utility-aligned co-location data centers designed to bring AI compute infrastructure to remote communities. The company focuses on Alaska with plans to expand across the continental U.S. and emerging markets.

2 investors

Greentown Labs is a climatetech startup incubator that supports and houses early-stage entrepreneurs, connecting them with corporate partners, investors, and community resources to develop and commercialize energy and climate technologies. It operates locations in Boston and Houston in the United States.

2 investors