Energy Startups

TerraWind Renewables develops and acquires onshore wind farms in the APAC region, with current operations focused on Japan and Korea. The independent power producer targets building a portfolio of 500 MW in operation or under construction by 2030, with a pipeline of 1 GW.

1 investor

Terreva is a portfolio company owned and managed by CIM Group, a real estate and infrastructure owner, operator, and developer.

1 investor

TESCO Metering manufactures custom metering equipment and testing devices for electric utilities, including meter test boards, field testing kits, and EVSE testers. The company has produced American-made utility products at its certified facility in Bristol, Pennsylvania since 1904.

1 investor

Startupbootcamp operates a global network of industry-focused startup accelerator programs across 20+ locations worldwide, providing mentorship, funding, and resources to early-stage companies.

1 investor

Tesseract Energy is a residential energy supplier that lets customers sign up online and switch from their previous supplier. It offers EV charger integration and installation, smart home device management with rewards, solar and battery export tracking, home-move energy transfers, and multi-property account management.

1 investor

TESVOLT builds battery storage systems for commercial, industrial, municipal utility and agricultural customers, combining hardware, energy management software and digital services into integrated energy storage solutions. The company also offers flexibility marketing, energy trading, and full-service planning and construction of battery parks, with a stated focus on the German market for commercial storage from 30 kWh to 2 MWh.

1 investor

TexPower manufactures cobalt-free lithium iron phosphate (LFP) and nickel manganese aluminum (NMA) cathode materials for lithium-ion batteries used in electric vehicles and energy storage systems. Based in Houston, Texas, it operates a pilot cathode facility and supplies the U.S. battery supply chain with plans to scale production capacity.

1 investor

Thames Water is a water and wastewater utility company providing drinking water and sewerage services to millions of people across London and the Thames Valley. The company is undertaking a £20 billion network upgrade program focused on fixing leaks, reducing pollution, and protecting water quality across its 140,000km of pipes and sewers.

1 investor

TAEF is a multilateral financial institution that provides corporate banking, investments, and treasury and capital markets services to corporate, institutional, and sovereign entities. The organization operates under a Central Bank of Bahrain banking license and maintains stringent AML/CFT compliance protocols aligned with international standards.

1 investor

The Nuclear Company provides a digital infrastructure platform that integrates the nuclear deployment chain, from construction through operations and security. It serves utilities and nuclear developers seeking standardized processes and data management for nuclear fleet development and operation.

1 investor

The Pennycress Company develops pennycress oil as a renewable fuel feedstock for biodiesel, renewable diesel, and sustainable aviation fuel production. Grown as a winter annual on fallow farmland, the feedstock avoids crop displacement while reducing lifecycle greenhouse gas emissions and qualifies for government low-carbon fuel incentive programs.

1 investor

Thermagix develops patented Phase-Change Thermoacoustic technology to capture and convert industrial low-grade waste heat that was previously unrecoverable. It targets industrial businesses seeking to recover wasted energy and reduce carbon emissions.

1 investor

Thermal Storage Finland (TSF) offers the Hybridilämpövoimala™, a hybrid heat plant with a control system that optimizes the use of available heat sources to produce heat in the most efficient and cost-effective way. It provides emission-free heat production solutions for industry and real estate across several European markets.

1 investor

Thermeleon builds a heat battery ("Warmtebatterij") for greenhouses that stores surplus heat during the day and releases it at night to provide cooling and heating, reducing energy demand and CO2 use. The customizable product is aimed at growers looking to improve greenhouse energy efficiency without production loss.

1 investor

ThermoVault makes a smart controller with self-learning algorithms that optimizes existing electrical water heaters, storage heaters, and heat pumps to reduce home electricity bills. By using these devices as thermal storage, it helps integrate renewable energy into the grid for residential energy consumers.

1 investor

ThermoKey manufactures heat exchangers and cooling solutions for air conditioning, refrigeration, data center cooling, and industrial applications. The company specializes in aluminium microchannel technology designed to reduce refrigerant usage and support low-GWP alternatives.

1 investor

Thésée Datacenter is a French data center hosting provider offering Tier IV certified colocation with high availability, high-density/HPC capacity, and energy-efficient indirect free-cooling. It operates dual sites in the Paris region for hosting critical data.

1 investor

The Switch develops permanent magnet and DC switchboard technologies for the marine industry to generate, use, and distribute energy more efficiently. The company targets decarbonization in maritime applications through advanced electrification solutions.

1 investor

THG Energy provides a unified data platform that connects energy stakeholders including brokers, providers, businesses, institutions, industrial users, and governments to access and align on energy data.

1 investor

Thin Line Capital is a venture capital firm that invests $400-$600k into seed-stage, low-capex climate-tech companies focused on renewable energy, electrification of transport, and climate resiliency. Founded and run by former entrepreneurs, it takes an active partner role supporting founding teams in the energy and sustainability sectors.

1 investor

Think Power Solutions provides safety training and utility infrastructure solutions for the energy sector, emphasizing worker safety, compliance, and risk management in electrical line work and transmission/distribution operations.

1 investor

Thiozen, an MIT spinout, produces hydrogen from sour gas waste streams using a low-emission method aimed at the energy industry. The company serves energy sector partners seeking affordable clean hydrogen for decarbonization and energy security.

1 investor

Third Wave Power makes portable, solar-powered energy products for use off the power grid, including field work, emergency backup, and outdoor or rural settings. The company also combines solar with IoT connectivity for off-grid consumer products and sensor solutions for smart city applications.

1 investor

A foundation providing educational information about molten salt reactors and thorium technology as potential solutions for fossil-fuel-free energy transition. The organization offers scientific resources and maintains advisory expertise from leading Dutch technical institutions.

1 investor