Elliot Nell
@elliot_nell_
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Co-Founder/CEO @MersenneTech and investing @novi_loren. Technologist, veteran. @NavalAcademy / @StanfordGSB
NYC
Joined January 2025
The most overlooked role in hard tech: Head of Finance / CFO
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Everytime I get mad at people in the cheap seats criticizing founders in the arena, I remind myself of what Giannis said. Arguably my favorite response to a reporter ever.
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@EnergyJvd Harnessing the power of uranium and thorium is not in conflict with harnessing the Sun. Fission provides dense, on-demand, location independent power. Its value is differentiated. It’s extremely useful in areas with poor solar resource, like the far North or deep space.
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Texas is building out renewables at a blistering pace. California isn't. The impediments to clean energy in the US aren't the repeal of the IRA or NEPA: They're state level permitting, environmental review, and interconnection policies. Charts by @JEBistline & @curious_founder
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A lot of people build startups to win the lottery instead of building the thing they'd build if they’d already won. The companies I'm most drawn to are ones that founders build as machines to do the stuff they want to do with other people who do, too. https://t.co/43rAdemSDy
notboring.co
You have the right to work only but never to its fruits.
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1. Pick the biggest problem you can work on. 2. Find a solution space with early indications of viability. 3. Sell others on the value of ideal solution. 4. Iterate to solution. This is the process
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playbook: - learn finance, the best industrialists throughout history were the best financiers - build real technology that differentiates your unit economics and scales - assemble a world-class team and execute bonus: - ignore AI raises - don't sleep
Everyone in the ReInd movement needs to quit complaining about capital allocators not wanting to fund you. Deep Tech if you're not Elon or Palmer is 50% engineering 50% GTM & Ops 50% capital markets. And yes that adds up to 150% because all three are 10x harder than an AI wrapper
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If you're terminally online and want to build the future of humanity @MersenneTech by meme'ing your way there, HMU. You're gonna socials, video content, and broadly speaking marketing strategy. Remote OK, US citizens only.
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DOE Nuclear Fuel Cycle DPA Consortium: Strengthening Every Link in the U.S. Fuel Chain Workforce Development • DOE & NEI project 18 K–25 K new skilled workers needed by 2032 • ~35 % of nuclear workforce retirement-eligible by 2030 • BIL funding expanding apprenticeships and
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The US Navy has managed a total of 273 nuclear reactors, 6200 reactor-years, over 177 million miles, averaging 4 new reactors per year over 70 years. They have done this with a perfect safety record. Zero accidents. Zero injuries, zero deaths, zero environmental pollution.
The view that the US has stopped producing nuclear reactors is actually pretty inaccurate. Over the last decade the US Navy has commissioned 1-2 new nuclear reactors per year. They currently operate 100 reactors, more than any other org on the planet.
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Substrate vs. ASML & TSMC. Extropic ships thermo chips. Mazama makes geothermal super hot. Mersenne announces compact nuclear. Valthos raises for next-gen biodefense. 1X begins selling NEO home robots for $20k. +J. Storrs Hall x Abundance ++ X-59 What a week for the optimists.
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Tungsten It has the highest melting point of all known elements and is about as dense as uranium or gold. You can’t really melt tungsten down and cast it easily as it would require insane energy and container materials. It’s hard as hell and very brittle so it’s very difficult
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The feed over the last 24 hours has been nothing but acceleration
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Let's talk shielding of microreactors. Here's an operable 3.3 MWt nuclear microreactor on a flatbed (the ML-1). a 🧵
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Nuclear engines seem hard until you remember we humans created the RS 25
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If you’re building a hard tech company in 2025, you should prioritize getting a massive diagonal elevator platform installed in your HQ to make it easy to descend into the lower levels and access the underground portion of your facility.
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In the company of giants.
Semiconductor seed rounds, nuclear deals, and dual-use electric boats Daily Hard Tech Headlines: - Substrate, a semiconductor startup, has raised $100M to build a novel lithography platform for next-generation chip manufacturing. - @MersenneTech has launched; the company is
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An important chart from @washingtonpost on energy costs – generation has become cheaper, but the cost of delivering energy to consumers across the grid has more than doubled.
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