Helium-3 is the cleanest fusion fuel in existence. The D/He-3 reaction produces no neutrons — only charged particles. No radioactive waste. No reactor contamination. Direct energy conversion at 80% efficiency. The entire current global supply is 8 kilograms per year, rationed from US government nuclear weapons tritium decay. Speculāris harvests it from the lunar regolith and delivers it to Earth orbit from Month 17.
Helium-3 is almost entirely absent from Earth's atmosphere — it escapes to space over geological time because it is lighter than air. The only terrestrial source is the decay of tritium in nuclear warheads. The United States Department of Energy produces approximately 8 kilograms per year. It is quota-limited, politically controlled, and insufficient for any meaningful fusion research programme, let alone a commercial fusion energy industry.
The fusion research programmes at QST, NIFS, ITER, and university plasma labs worldwide are not limited by funding, engineering, or physics. They are limited by He-3 supply. ITER uses deuterium-tritium precisely because DT has a lower ignition threshold than D/He-3 — not because it is better physics. The only reason humanity is not pursuing the cleaner, more efficient D/He-3 cycle at scale is that there is no He-3. Until now.
| Fuel cycle | Neutron output | Radioactive waste | Conversion efficiency | Fuel availability |
|---|---|---|---|---|
D-T (Deuterium-Tritium) Current ITER standard |
80% neutrons | High — activated walls, tritium | ~35% thermal | Tritium must be bred |
D-D (Deuterium-Deuterium) |
~50% neutrons | Moderate | ~35% thermal | Abundant — seawater |
p-B11 (Proton-Boron) |
Near zero | Minimal | ~60% direct | Boron abundant |
D-He3 (Speculāris) FPP-1 and FPP-2 design fuel |
Near zero | Negligible | ~80% direct MHD | Lunar harvest — unlimited |
The LH-1 is an autonomous bulldozer that scrapes lunar regolith, heats it to release solar-wind-implanted He-3, and stores it for collection. It is manufactured entirely at L4 from asteroid-derived materials. It requires no Earth launch after the initial seed ship. It is delivered to the Moon by fusion ship and is self-fueling after an initial bootstrap charge from the L4 factory.
The Shackleton Crater connection: The lunar south pole experiences near-continuous solar illumination — up to 89% of the year at the crater rim. This is both the solar power source for the LH-1 and the reason He-3 concentrations are highest here — maximum solar wind exposure over geological time. The same geography that makes Shackleton ideal for a permanent lunar base makes it ideal for He-3 harvesting. The LH-1 fleet and the Shackleton data centre (20 floor nodes + 10 rim nodes, built by two permanently assigned Constructor drones) share the same location.
The LH-1 fleet scales exponentially. Each generation of machines is funded by its own harvest, built at L4 from asteroid materials, and delivered to the Moon without an Earth launch. Every six months the fleet doubles. The He-3 supply problem that has constrained fusion research for fifty years is resolved within a few years of first harvest.
Speculāris strategic investment partners receive He-3 at 50% perpetual discount as part of the investment return structure. Japan is positioned as the anchor He-3 customer — QST, NIFS, and ITER participation programmes gain the competitive research advantage of a guaranteed He-3 supply that no other national programme has access to.
Fifty years of fusion research have been conducted with the wrong fuel because the right fuel was not available. Deuterium-tritium ignites at a lower temperature. It produces neutrons that activate the reactor walls. It requires a tritium breeding blanket. It generates radioactive waste. It was chosen because D/He-3 was not an option.
The lunar regolith contains one million kilograms of helium-3 implanted by four billion years of solar wind. It has been sitting there since before life existed on Earth. Waiting for a machine that could harvest it. The LH-1 is that machine.
Speculāris — On the cutting edge.
Strategic investment partners receive He-3 at 50% perpetual discount as part of the Speculāris return structure. Japan is the anchor customer. The supply chain is ready.