TL;DR: Helion Energy does not publish a price list we can verify, which is normal for Industrials companies at this stage. Below: what we can confirm, how to get a real quote, and 8 comparable tools to benchmark the number against.
What is verifiable about Helion Energy pricing, how to get a real quote, and 8 comparable tools to price it against.
Last verified:
Not in any source we can verify. Helion Energy is a Y Combinator-backed Industrials company from the Summer 2014 batch, and companies at this stage usually quote per customer rather than publish rate cards. We will not guess at a number — anything quoted elsewhere without a source is guesswork too. The company profile we work from is the Y Combinator listing; the current figure has to come from Helion Energy directly.
These are the closest comparable tools, matched on what Helion Energy actually does. Price each one alongside it — stage and team size are a reasonable proxy for where a vendor sits on price.
| Compare against | What it does | Stage | Team |
|---|---|---|---|
| Boost Biomes | — | YC Summer 2019 | 12 |
| ThereCraft | — | YC Summer 2017 | 1 |
| Prometheus | We use solar and wind power to make zero net carbon electrofuels | YC Winter 2019 | 25 |
| Airthium | Decarbonized heat and power cheaper than fossil fuels | YC Summer 2017 | 18 |
| Maritime Fusion | Fusion reactors for ships | YC Winter 2025 | 6 |
| Intelline | Intelline makes the world's most efficient fuel agnostic engines for… | YC Winter 2019 | 3 |
| Zephyr Fusion | Powering tomorrow's industrial revolution in space | YC Fall 2025 | 2 |
| Apollo Atomics, Inc. | We make the most compact nuclear reactors | YC Spring 2026 | — |
That depends on a number we cannot see, so judge it on what we can: Helion Energy is currently Active with a team of around 150. A small team means faster support and more negotiating room, but more risk of the product changing direction. A larger or public vendor costs more and moves slower. If price is the deciding factor, the earlier-batch companies in the table are usually the ones still competing on it.
See all Helion Energy alternatives compared →
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