Let’s make the internet weird.

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Cake day: June 15th, 2023

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  • Yeah I’m with you. I have a senior license at a US nuclear plant just for some background as I don’t know yours. What I’m saying is that I can see value of multiple, say 300MW SMRs at a single site, that can go from 0-100% very quickly compared to current 900-1100MW reactors. So the idea would be you could have a plant in Mode 3 Hot Standby ready to raise power for peak loading. Ideally you’d have at least one reactor online at all times that provides its own in house loads and the standby in house loads that would be quite low. That is the value I see.

    The issue at that point would be refueling and maintenance outages. It seems ideal that the design would need to support online refueling and enough loops/system availability to do the majority of plant maintenance online. In addition, the regulatory landscape has a lot of momentum to allowing plants to move to risk informed tech specs which allow for major equipment outages in modes of applicability. If the industry as a whole can agree on a handful of SMR designs with multiple capacity options, it really could be a stop gap to hopefully fingers crossed fusion power in, I don’t know, 50-100 years from now? My two cents.


  • The small reactors on submarines can maneuver very quickly without causing fuel damage. Less power per core = less heat generation. Large reactors are limited by flux rate because they can have such high localized heating during maneuvering which has the potential to damage fuel. In that sense, SMRs could raise and lower power to meet demand or even operate on full power/standby basis like what gas plants offer during peak load.

    I can’t speak to the strategy of an electric utility using SMRs, but to your point, I would think the idea would still be base load. Build a site with the potential for more SMRs to be built to meet demand in the future.