Antares Funding, Investors & Competitors

Radiant is a Seattle-headquartered company that engineers the Kaleidos microreactor, a truck-transportable nuclear fission system generating one megawatt of continuous power for off-grid locations, military bases, and disaster response. Designed to eliminate diesel generator reliance, the reactor achieves full power in under 24 hours and operates for 40 years without refueling. Radiant partners with the U.S. Department of Defense through a $10 million contract and collaborates with the Tennessee Valley Authority on demonstrations. Founded in 2019, the firm advances advanced nuclear technology across North America.

GE Vernova is a global leader in the electric power industry, with products and services that generate, transfer, convert, and store electricity. The company has three business segments: power, wind, and electrification. Power includes gas, nuclear, hydroelectric, and steam technologies, providing dispatchable power. The wind segment includes wind generation technologies, including onshore and offshore wind turbines and blades. Electrification includes grid solutions, power conversion, electrification software, and solar and storage solutions technologies required for the transmission, distribution, conversion, and storage of electricity from the point of generation to the point of consumption.

X-Energy Inc is a leading developer of advanced SMR and fuel technology for clean energy generation. It is seeking to redefine the nuclear energy industry through its flagship product, the Xe-100, an advanced small modular HTGR designed to generate up to 80 megawatts of electric power and/or up to 200 megawatts of thermal output, depending on the configuration. X-energy’s simple and intrinsically safe advanced SMR designs, like the Xe-100, significantly expand the applications and markets for nuclear technology with enhanced safety, lower cost and faster construction timelines when compared with conventional nuclear energy sources and broader use cases when compared with other SMRs.

NuScale Power Corp is redefining nuclear power through the development of proprietary and SMR technology that will deliver safe, scalable, cost-effective, and reliable carbon-free power. Its products are VOYGR Plants and E2 Centers.

Kyoto Fusioneering is a Kyoto-headquartered engineering firm developing magnetic coils and diagnostics for fusion reactors. Founded in 2021, the company supplies high-temperature superconducting components to projects like ITER and private ventures including Commonwealth Fusion Systems. Kyoto Fusioneering tests prototypes at facilities in Uji City.

K2 Space is a Los Angeles-based aerospace company developing reusable satellite bus platforms for medium and geostationary Earth orbits. Its E2 satellite supports up to ten units per Falcon 9 launch, incorporating high-power electric propulsion for enhanced performance in communications and computing missions.

Tianbing Technology is a Chinese aerospace company supplying advanced propulsion systems and launch vehicles. It develops next-generation green HCP liquid propellants operable at ambient temperatures alongside minimalist engines that outperform traditional chemical systems for small satellite main engines and upper-stage kick motors. Operating under Space Pioneer, the firm tested its HCP system first and pursues reusable rocket technologies including the TQ-11A engine and PALLAS-1 carrier rocket aiming for orbital launches.

Ansaldo Energia is a Genoa-headquartered power generation specialist offering turnkey plants, gas and steam turbines, generators, microturbines, and comprehensive maintenance services for equipment from various manufacturers, alongside nuclear activities.

Epirus is a Los Angeles-headquartered defense technology firm developing solid-state, software-defined high-power microwave systems for counter-electronics missions. Its Leonidas family of directed energy weapons integrates long-pulse HPM with AI for electronic warfare, targeting drones and threats in military applications since 2018.

Siemens Energy manufactures a wide range of equipment used to generate and transmit energy. The group is a product of the spinout from Siemens AG in 2020, consisting of the power and gas segment and Siemens Gamesa, although its operations go back over 150 years. Approximately one-sixth of global electricity generation is based on its technology.

Bloom Energy designs, manufactures, sells, and installs solid oxide fuel cell systems for on-site power generation. Bloom Energy Servers are fuel-flexible and can use natural gas, biogas, and hydrogen to create 24/7 electricity for stationary applications. Bloom sells its systems in the United States and internationally.

SLB is the world’s premier oilfield-services company as measured by market share. While the industry is largely fragmented, SLB holds the first or second competitive position in many of the differentiated oligopolies in which it operates. Also known as Schlumberger, the company was founded in 1926 by two brothers bearing the same last name. Today, it’s most known as a global industry leader in innovation, while it focuses its strategy on its three growth engines: core, digital, and new energy businesses. Over three-fourths of its revenue base is tied to international markets, while the company boasts nearly $3 billion in digital-related revenue.

Following a 2022 reorganization, Baker Hughes operates in two segments: oilfield services and equipment, and industrial and energy technology. The firm's oilfield services and equipment segment is one of the Big Three oilfield-services players, along with SLB and Halliburton, and mostly supplies to hydrocarbon developers and producers, including national oil companies, major integrated firms, and independents. Markets outside of North America buy roughly three-fourths of the segment's offerings. Baker Hughes' industrial and energy technology segment manufactures and sells turbines, compressors, pumps, valves, and related testing and monitoring services for various energy and industrial applications.

Adani New Industries is a wholly-owned subsidiary of Adani Enterprises headquartered in Ahmedabad that manufactures solar photovoltaic modules, wind turbine generators, green hydrogen electrolysers, and energy storage systems. Established in 2023, it operates a 4 GW solar module facility in Mundra alongside plans for 5 GW annual wind turbine production and a 2.5 GW electrolyser plant by 2026. The company supports India's green energy transition by producing high-efficiency N-type TOPCon solar cells and integrates backward into polysilicon and ingots. Its Khavda mega-factory aims for 10 GW integrated solar manufacturing capacity.

Vistra Corp. is one of the largest power producers and retail energy providers in the USA. It owns 44 gigawatts of generation capacity, including natural gas (27 GW), nuclear (6.5 GW), coal (8.7 GW), and solar and battery storage (1.4 GW). The Cogentrix acquisition will add 5.5 GW of gas generation. Vistra's retail electricity business serves 5 million customers in 20 states, including almost a third of all Texas electricity consumers. Vistra emerged from the Energy Future Holdings bankruptcy as a stand-alone entity in 2016.

Sandvik is a manufacturer of specialized tools and mining equipment used predominantly by global mining, engineering, and automotive customers. The group is composed of three segments: mining and rock solutions, rock processing, and machining. Sandvik was founded in 1862 and listed on the Nordic Exchange in Stockholm in 1901.