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Nuclear Fusion
Goal Net-positive, grid-connected fusion power
Stage ladder
How stages are derived →- 1Plasma & confinement
- 2Scientific breakeven
- 3Repeatable gain & engineering
- 4Pilot plant licensed/built
- 5Commercial power
Companies, by verified stage
Helion Energy PRIVATE
4.0 / 5
$1.5B
Xcimer Energy PRIVATE
4.0 / 5
—
Type One Energy PRIVATE
3.5 / 5
—
Commonwealth Fusion Systems PRIVATE
3.0 / 5
$2.0B
General Fusion PRIVATE
2.5 / 5
$440M
Avalanche Energy PRIVATE
1.0 / 5
$69M
Pacific Fusion PRIVATE
1.0 / 5
—
First Light Fusion PRIVATE
Not staged
—
Focused Energy PRIVATE
Not staged
$300M
Inertia PRIVATE
Not staged
$450M
Marvel Fusion PRIVATE
Not staged
—
Proxima Fusion PRIVATE
Not staged
—
Renaissance Fusion PRIVATE
Not staged
$50M
TAE Technologies PRIVATE
Not staged
$1.2B
Thea Energy PRIVATE
Not staged
$130M
Tokamak Energy PRIVATE
Not staged
$250M
Zap Energy PRIVATE
Not staged
$330M
Metrics
Fusion energy gain (Q)
Energy gain Q
4.1 Q
Peak plasma temperature
Plasma temp
160M°C M°C
Longest sustained plasma
Plasma duration
1,337s s
Fusion triple product (n·T·τ)
Triple product
1.5×10²¹ keV·s·m⁻³
Private fusion investment
Private investment
$9.8B USD
Annual research output
Research output
3,180 papers