New and recently funded Energy Startups
1
Country: USA | Funding: $599M
Valar Atomics develops small modular nuclear reactors (SMNRs) using proven high-temperature gas reactor (HTGR) technology combined with safe TRISO fuel. HTGRs are optimized to produce high-quality process heat which is used for industrial and chemical applications, providing nearby partners with affordable, abundant and clean energy. Using TRISO-coated fuel particles and helium coolant, the HTGRs passively remove decay heat without active systems or operator intervention. This design minimizes the risk of core damage even in severe accident scenarios. The company plans to mass-produce the reactors and deploy them at so-called gigasites, where they will power AI data centers, industrial facilities, and other customers.
Valar Atomics develops small modular nuclear reactors (SMNRs) using proven high-temperature gas reactor (HTGR) technology combined with safe TRISO fuel. HTGRs are optimized to produce high-quality process heat which is used for industrial and chemical applications, providing nearby partners with affordable, abundant and clean energy. Using TRISO-coated fuel particles and helium coolant, the HTGRs passively remove decay heat without active systems or operator intervention. This design minimizes the risk of core damage even in severe accident scenarios. The company plans to mass-produce the reactors and deploy them at so-called gigasites, where they will power AI data centers, industrial facilities, and other customers.
2
Country: USA | Funding: $50.4M
Swift Solar is developing lightweight, flexible, and highly efficient solar panels based on perovskite tandem semiconductors. The company says it has improved perovskite stability by >100x: it's cells can operate over 3,000+ hours with no degradation. Swift's intellectual actives include unique patent-protected solar cell materials, architectures and manufacturing processes for high-performance and stable perovskite products. The company has own manufacturing facility in the USA
Swift Solar is developing lightweight, flexible, and highly efficient solar panels based on perovskite tandem semiconductors. The company says it has improved perovskite stability by >100x: it's cells can operate over 3,000+ hours with no degradation. Swift's intellectual actives include unique patent-protected solar cell materials, architectures and manufacturing processes for high-performance and stable perovskite products. The company has own manufacturing facility in the USA
3
Country: USA | Funding: $4M
Arinna builds ultrathin solar panels specifically for spacecraft. Its technology is based on a new material - transition metal dichalcogenides that are atomically thin semiconductors. This technology allows for extremely flexible cells that the company claims are cheaper, more durable than legacy space solar panels and 32% more efficient. Arinna’s technology also won’t require protective coverings, will last 15 years on orbit, and can be delivered within weeks. The company expects to have its first products being tested on orbit before the end of 2026. After qualifying their photovoltaics in space, the company hopes to build a facility that can mass produce the stuff at megawatt scale in 2028.
Arinna builds ultrathin solar panels specifically for spacecraft. Its technology is based on a new material - transition metal dichalcogenides that are atomically thin semiconductors. This technology allows for extremely flexible cells that the company claims are cheaper, more durable than legacy space solar panels and 32% more efficient. Arinna’s technology also won’t require protective coverings, will last 15 years on orbit, and can be delivered within weeks. The company expects to have its first products being tested on orbit before the end of 2026. After qualifying their photovoltaics in space, the company hopes to build a facility that can mass produce the stuff at megawatt scale in 2028.
4
Country: USA | Funding: $39.7M
Claros creates power management platform for data centers that utilizes cutting-edge hardware, software to enhance their energy efficiency and enable sustainable high-performance computing.
Claros creates power management platform for data centers that utilizes cutting-edge hardware, software to enhance their energy efficiency and enable sustainable high-performance computing.
5
Country: USA | Funding: $150M
Arc Boats builds hybrid electric vessels: tugs, ferries, and electric motors for autonomous defense boats (ensuring stealth). Its integrated electric systems combine the propulsion system, energy storage, and software into a single, coherent platform. The electric motor delivers high instantaneous torque and flexible speed control for precise control in port, reducing downtime and lowering operating costs. They ensure efficient charging and more environmentally friendly operation for busy, repetitive schedules. Without fuel systems or complex transmissions, the electric propulsion system minimizes maintenance and downtime.
Arc Boats builds hybrid electric vessels: tugs, ferries, and electric motors for autonomous defense boats (ensuring stealth). Its integrated electric systems combine the propulsion system, energy storage, and software into a single, coherent platform. The electric motor delivers high instantaneous torque and flexible speed control for precise control in port, reducing downtime and lowering operating costs. They ensure efficient charging and more environmentally friendly operation for busy, repetitive schedules. Without fuel systems or complex transmissions, the electric propulsion system minimizes maintenance and downtime.
6
Country: USA | Funding: $10M
Mantis Space is energy provider for space missions and LEO satellites. It creates a constellation of spacecraft that orbit Earth, capturing solar energy and transmitting it to other spacecraft in orbit using optical systems with modern laser technology. These systems wirelessly transmit power directly to the satellites' existing solar panels. Mantis' power infrastructure eliminates the typical power shortage experienced by satellites when they enter darkness approximately every 95 minutes (a period known in the space industry as an eclipse) and extends their operational life.
Mantis Space is energy provider for space missions and LEO satellites. It creates a constellation of spacecraft that orbit Earth, capturing solar energy and transmitting it to other spacecraft in orbit using optical systems with modern laser technology. These systems wirelessly transmit power directly to the satellites' existing solar panels. Mantis' power infrastructure eliminates the typical power shortage experienced by satellites when they enter darkness approximately every 95 minutes (a period known in the space industry as an eclipse) and extends their operational life.
7
Country: USA | Funding: $84.4M
Tandem PV produces tandem photovoltaic systems that use perovskite, which captures wavelengths of light that conventional silicon solar panels inefficiently convert into electricity. Their technology delivers significantly higher power output with the same panel area and similar cost per watt. Tandem PV panels have an enhanced durability suitable for long-term use, as demonstrated by accelerated testing showing degradation of less than 1% per year. The company is also building a robust patent portfolio in core perovskite layer technologies, system design and durability metrics to protect and expand these advantages as production scales.
Tandem PV produces tandem photovoltaic systems that use perovskite, which captures wavelengths of light that conventional silicon solar panels inefficiently convert into electricity. Their technology delivers significantly higher power output with the same panel area and similar cost per watt. Tandem PV panels have an enhanced durability suitable for long-term use, as demonstrated by accelerated testing showing degradation of less than 1% per year. The company is also building a robust patent portfolio in core perovskite layer technologies, system design and durability metrics to protect and expand these advantages as production scales.
8
Country: UK | Funding: $152.2M
Oxford PV develops perovskite tandem cell technology - solar cells that consist of two components: one perovskite and the other silicon. Traditional silicon solar cells absorb light in the red part of the spectrum, while perovskite absorbs light in the blue part. Thus, a tandem cell captures more sunlight than a single cell can, and therefore generates more energy. All this without changing the size (area) of the solar cell. Oxford PV's proprietary perovskite technology is designed to work with standard solar panels. The company has its own manufacturing facility and sets new world records for perovskite cells efficiency almost every year.
Oxford PV develops perovskite tandem cell technology - solar cells that consist of two components: one perovskite and the other silicon. Traditional silicon solar cells absorb light in the red part of the spectrum, while perovskite absorbs light in the blue part. Thus, a tandem cell captures more sunlight than a single cell can, and therefore generates more energy. All this without changing the size (area) of the solar cell. Oxford PV's proprietary perovskite technology is designed to work with standard solar panels. The company has its own manufacturing facility and sets new world records for perovskite cells efficiency almost every year.
9
Country: Germany
Perosol is developing lightweight, flexible and sustainably printed perovskite solar cells. The company intends to build a large-scale printing facility that will be able to produce several kilometers of solar cells per day.
Perosol is developing lightweight, flexible and sustainably printed perovskite solar cells. The company intends to build a large-scale printing facility that will be able to produce several kilometers of solar cells per day.
10
Country: UK
Rux Energy is developing a low-cost, safe and efficient hydrogen storage solution that will be a game changer for the implementation of low.
Rux Energy is developing a low-cost, safe and efficient hydrogen storage solution that will be a game changer for the implementation of low.
