Helion Energy to demonstrate net electricity production by 2024

[baking]

Why does it have to be 400 sf?

To reach their price point of <$60/MWh, unless you've heard differently.

[TallDave]

Why does it have to be 400 sf?

To reach their price point of <$6/MWh, unless you've heard differently.

your link says 60, not 6

also 400 SF would be smaller than my bedroom, don't think anyone needs a 50MWe fusion reactor quite that tiny:)

maybe for HEO you could get close to that, given that you only need a small fraction of the shielding

at any rate the economics are going to be driven by the simplicity of the design (no cryo, no SC, no drive current) as much as the size

hard to say how much diagnostic junk they can eventually remove or what the post-Orion form factor will look like, but remember their philosophy is to churn out reactors like airliners

[jrvz]

$60/MWh would be $.06/kWh, which sounds good. However, that estimate was in 2014. Have they revised it since then?

[baking]

Why does it have to be 400 sf?

To reach their price point of <$6/MWh, unless you've heard differently.

your link says 60, not 6

also 400 SF would be smaller than my bedroom, don't think anyone needs a 50MWe fusion reactor quite that tiny:)

maybe for HEO you could get close to that, given that you only need a small fraction of the shielding

at any rate the economics are going to be driven by the simplicity of the design (no cryo, no SC, no drive current) as much as the size

hard to say how much diagnostic junk they can eventually remove or what the post-Orion form factor will look like, but remember their philosophy is to churn out reactors like airliners

My bad, that was a typo. It should be <$60/MWh.

400 SF is the size of a standard shipping container, which was their original goal. (Actually, 40x8 or 320 SF, but I was being generous.) I don't think it is still practical, but I was trying to pin down Skipjack to quantify what he meant by "They will get a lot simpler and cheaper to build over time."

And I did the math wrong: 400 sf to 100,000 sf for a 50MWe power plant is 250X, not 2500X.

For comparison, a GW data center is about 4 million square feet in size. At 100,000 sf per 50MWe the GW power plant would be 2 million square feet.

Capital cost is also proportional to size.

[Munchausen]

To reach their price point of <$6/MWh, unless you've heard differently.

your link says 60, not 6

also 400 SF would be smaller than my bedroom, don't think anyone needs a 50MWe fusion reactor quite that tiny:)

maybe for HEO you could get close to that, given that you only need a small fraction of the shielding

at any rate the economics are going to be driven by the simplicity of the design (no cryo, no SC, no drive current) as much as the size

hard to say how much diagnostic junk they can eventually remove or what the post-Orion form factor will look like, but remember their philosophy is to churn out reactors like airliners

My bad, that was a typo. It should be <$60/MWh.

400 SF is the size of a standard shipping container, which was their original goal. (Actually, 40x8 or 320 SF, but I was being generous.) I don't think it is still practical, but I was trying to pin down Skipjack to quantify what he meant by "They will get a lot simpler and cheaper to build over time."

And I did the math wrong: 400 sf to 100,000 sf for a 50MWe power plant is 250X, not 2500X.

For comparison, a GW data center is about 4 million square feet in size. At 100,000 sf per 50MWe the GW power plant would be 2 million square feet.

Capital cost is also proportional to size.

The Orion building is said to be 100 x 275 feet:

https://x.com/Dkirtley/status/2001698046288236890

or 30,48 x 83,82, roughly 31 x 84 meters. In larger installation you will have centralized access roads and should be able to put three such buildings in a hectare.

That makes about about 7 hectares for a gigawatt of installed power. A minuscule installation even of you add in a an electrical substation, a workshop, a restaurant and an office building.

Smallest possble land requirement of just about any power source I should say.

For comparison the Forsmark nuclear power plant in Sweden (roughly 3500 megawatts of power) is about 1400 x 1300 meters (about 180 hectares) counting only the reactor buildings, the electrical substation, the workshop and the central cooling canal.

Add to that an office building, a restaurant, a huge parking lot, service personell hotel area, a cooling pond, an auxiliry gas turbine power station, process water supply facility, recreational and fish research facilities and quite a substantial harbour.

[TallDave]

400 SF is the size of a standard shipping container, which was their original goal. (Actually, 40x8 or 320 SF, but I was being generous.) I don't think it is still practical, but I was trying to pin down Skipjack to quantify what he meant by "They will get a lot simpler and cheaper to build over time."

And I did the math wrong: 400 sf to 100,000 sf for a 50MWe power plant is 250X, not 2500X.

For comparison, a GW data center is about 4 million square feet in size. At 100,000 sf per 50MWe the GW power plant would be 2 million square feet.

Capital cost is also proportional to size.

that's the reactor, not the caps and plant and shielding and so forth

standard shipping goes 53 foot on US rail, believe it goes 9.5 high max 4000 cubic feet... from what I have heard they would like to fit into that eventually but it's kind of a stretch goal

obviously today they're using 90-foot silica tubes, so that would require spin polarization or other upgrade to reduce the collision energy requirements

capital cost is proportional to mass and volume, not surface area... these things are much longer and skinnier than they are tall, and in theory you could even stack them

and electricity comes right out of them like magic, with no steam turbine, no blanket, no cryo, no superconductors... it is frankly ridiculous

[mvanwink5]

Nuclear fission plant components (reactor vessels, turbines, generators, heaters, condensers, cooling towers, etc) are extremely long lead items with no shortcuts, in sharp contrast to the components of Helion’s fusion generator. The point is time to make, deliver, install Helion’s fusion generators are all relatively short. Talk of capital is just about money, but **time** to online is everything in the AI race. Everything I have seen in Helion’s machine is capable to be made short term.

[Skipjack]

Why does it have to be 400 sf?

To reach their price point of <$60/MWh, unless you've heard differently.

The ultimate goal is 1 cent/kWh. Why would the sf of the full plant of all things affect the cost that much?
The machine itself is much smaller and that is the important part because it allows for road transport. The rest can also be shipped in containers.