NuScale Power
NRC-certified VOYGR SMR design
Next-Gen Energy
Fission, fusion, and grid-scale storage startups.
28 companies · 6 segments
Fission — Small Modular Reactors
X-energy
Xe-100 HTGR; Amazon-backed
Oklo
Aurora fast microreactor (NYSE: OKLO)
Kairos Power
FHR; Google offtake partnership
TerraPower
Natrium sodium fast reactor (Gates-backed)
Last Energy
20 MW micro-SMR for industrial sites
Fusion
Commonwealth Fusion Systems
HTS-magnet tokamak (SPARC/ARC)
Helion Energy
Pulsed magneto-inertial; Microsoft PPA
TAE Technologies
Aneutronic field-reversed configuration
Tokamak Energy
Spherical tokamak + HTS magnets (UK)
Type One Energy
Optimized stellarator
Pacific Fusion
Pulsed inertial fusion
Grid-Scale Storage — Long-Duration
Form Energy
100-hour iron-air batteries
ESS Inc.
Iron-flow batteries (up to 22 hr)
Antora Energy
Thermal storage + thermophotovoltaics
EnerVenue
Nickel-hydrogen grid batteries
Malta
Pumped-heat electricity storage
Geothermal
Fervo Energy
Enhanced geothermal (Cape Station, UT)
Eavor
Closed-loop advanced geothermal
Quaise Energy
Millimeter-wave deep drilling
Sage Geosystems
Geopressured geothermal + storage
Next-Gen Batteries
QuantumScape
Solid-state lithium-metal cells
Sila Nanotechnologies
Silicon anode chemistry
Natron Energy
Sodium-ion for data centers
Northvolt
European gigafactories (restructuring 2024–25)
Fuel & Carbon
Electric Hydrogen
100 MW electrolyzer stacks
Twelve
CO₂ → e-fuels & chemicals
Climeworks
Direct air capture (Orca/Mammoth, Iceland)