Last Energy Funding, Investors & Competitors

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.

Cameco Corp is a provider of uranium needed to generate clean, reliable baseload electricity around the globe and is one of those uranium producers. It has three reportable segments: Uranium, Fuel Services, and Westinghouse, deriving maximum revenue from the Westinghouse segment. The Uranium segment involves the exploration for, mining, milling, purchase, and sale of uranium concentrate, while the Fuel Services segment involves the refining, conversion, and fabrication of uranium concentrate and the purchase and sale of conversion services. Westinghouse Electric Company provides products and services to nuclear reactors, including outage and maintenance services, engineering support, instrumentation and controls equipment, plant modification, and components and parts.

CEZ AS is a Czech energy company of which the government of the Czech Republic is the majority shareholder. The core business of the company is the generation, distribution, trade, and sale of electricity and heat. With its subsidiaries, the company operates a portfolio of both conventional and renewable energy power plants. Total energy production is mainly split between facilities utilizing thermal and nuclear inputs. CEZ segments comprise Generation; Distribution; Sales and Mining. The majority of its revenue is derived from the Generation segment.

Uniper SE is a Germany-based energy generation and energy trading company. The firm operates through three segments: Flexible Generation, Greener commodities, and Green Generation. The Green Generation segment comprises emission-free power generation plants that the Uniper Group operates in Europe. The Flexible Generation segment comprises the power and heat generation plants that the Uniper Group operates in Europe to flexibly meet grid operators' requirements. The Greener Commodities segment bundles the energy trading and optimization activities and forms the commercial interface between the Uniper Group and the globally traded markets for energy and the major customers. The majority of revenue is derived from the Greener Commodities segment.

Kansai Electric Power Co Inc is a Japan-based company that provides energy and information technology solutions. The company operates in four business segments. The Energy segment offers electricity, gas, and utility solutions. The Information and Communications segment provides comprehensive communication services. The Lifestyle/Business Solutions segment delivers consumer and business-related services. The Power Transmission and Distribution segment ensures a safe and reliable electricity supply from a neutral and fair standpoint. It generates the majority of its revenue from the Energy business segment.

China National Uranium Co Ltd is engaged in the mining, smelting, sales, and trade of natural uranium resources. It also engages in the comprehensive utilization and product sales of radioactive co-associated mineral resources such as monazite and uranium-molybdenum. Its business scope further includes investment in and management of overseas uranium resource projects, covering exploration, surveying and design, and engineering construction. Additional activities include import and export operations, as well as technology development, technical services, and technical consulting. The company is also involved in the mining and processing of rare earth metal ores, uranium ores, and precious metal ores.

Valar Atomics is a nuclear technology company developing modular high-temperature gas reactors fueled by TRISO particles for off-grid industrial power and clean fuel production. Headquartered in El Segundo, California, the firm plans gigasites hosting hundreds of 35 MW reactors to supply hydrogen and synthetic fuels to steel mills and chemical plants. Founded in 2022, Valar Atomics raised $10 million in seed funding and collaborates with the U.S. Department of Energy on advanced reactor demonstrations.

Devens, Massachusetts-headquartered Commonwealth Fusion Systems pioneers compact tokamak fusion reactors powered by high-temperature superconducting magnets. The company constructs SPARC, a six-meter-wide demonstration tokamak scheduled for net energy production by 2025 at its Devens site, which serves as a prototype for ARC, a 200-400 megawatt pilot plant intended for grid connection in New Hampshire during the early 2030s. CFS produces its proprietary magnets in-house at a dedicated factory opened in 2021 and collaborates closely with the MIT Plasma Science and Fusion Center on plasma physics advancements. Key technologies include the VIPER cable design enabling 20-tesla magnetic fields essential for plasma confinement. Founded in 2018 as an MIT spinout, CFS advances commercial fusion through rigorous peer-reviewed engineering.

Nova Fusion is a technology developer commercializing small modular nuclear fusion reactors for clean energy production. The company designs compact reactors aimed at providing scalable, zero-carbon power for industrial and grid applications. Nova Fusion advances fusion technology through proprietary plasma confinement and materials innovations. Located in the United States, it collaborates with research institutions to accelerate reactor prototypes toward commercial deployment.

Clean Planet is a Japanese research firm developing lattice confinement fusion technology for clean heat generation without radioactive waste. Its scientists conduct experiments on gas-phase and metal-hydride systems to achieve transmutation and excess heat production. Based in Tokyo and founded on September 1, 2012, the company collaborates with universities and operates test reactors in Hokkaido. Clean Planet publishes results from quantum mechanics-based models and partners with Mitsubishi Heavy Industries for commercialization.

Type One Energy Group is a Knoxville-headquartered fusion energy developer. Formed in 2019, it builds high-temperature superconducting stellarator reactors using advanced manufacturing and computational design. The FusionDirect program targets a prototype by 2025 at the Oak Ridge National Laboratory site, partnering with utilities for grid-scale power deployment.

CORE POWER (UK) Ltd is a London-based developer of floating nuclear power plants and propulsion systems for maritime and industrial applications. It advances modular reactor designs in collaboration with shipbuilders and energy firms to enable zero-emission shipping routes and offshore power generation.

Saudi Aramco is the national oil company of Saudi Arabia and holds the exclusive right to explore for, produce, and refine the country’s hydrocarbons. It is the largest oil and gas producer in the world with a production volume of 12.4 mmboe/d in 2024, including 10.8 mmboe/d of liquids. Its 4.1 mmb/d in net refining capacity makes it the world’s fourth-largest refiner. It also owns 57.6 million metric tons of chemical manufacturing capacity, placing it among the top five global chemical companies.

ExxonMobil is an integrated oil and gas company that explores for, produces, and refines oil worldwide. In 2025, it produced 3.3 million barrels of liquids and 8.4 billion cubic feet of natural gas per day. At the end of 2025, reserves were 19.3 billion barrels of oil equivalent, 69% of which were liquids. The company is one of the world's largest refiners, with a total global refining capacity of 4.1 million barrels of oil per day, and is one of the world's largest manufacturers of commodity and specialty chemicals.

Chevron is an integrated energy company with exploration, production, and refining operations worldwide. It is the second-largest oil company in the United States with production of 3.0 million of barrels of oil equivalent a day, including 7.7 million cubic feet a day of natural gas and 1.7 million of barrels of liquids a day. Production activities take place in North America, South America, Europe, Africa, Asia, and Australia. Its refineries are in the US and Asia for total refining capacity of 1.8 million barrels of oil a day. Proven reserves at year-end 2024 stood at 9.8 billion barrels of oil equivalent, including 5.1 billion barrels of liquids and 28.4 trillion cubic feet of natural gas.