The commercial difficulties of Small Modular Reactors are usually attributed to engineering complexity, regulatory burden, or public opposition. None of these explanations accounts for the pattern observed over four decades. The sector has consistently failed to deliver projects on time and on budget despite mature reactor technology, experienced workforces, and sustained government support. A more plausible explanation is that SMR deployment is constrained by a coordination problem no single participant can solve alone.
This article applies three concepts from game theory to the current SMR market. The purpose is to use game theory as an analytical framework for understanding why capital deployment in this sector has been slow, and which developers are positioned to survive the current phase.
Coordination Failure and the Factory-Utilization Paradox
The economic case for SMR manufacturing depends on a single premise: low unit costs are achieved through high-volume factory production. This premise holds across aerospace, automotive, and shipbuilding. It has not yet been demonstrated in nuclear.
The difficulty is structural. Private industrial consortia are unwilling to invest in high-volume SMR assembly lines without binding orders. Utility boards are unwilling to finalize SMR procurement contracts until those assembly lines have demonstrated unit costs. Both positions are rational. Together they produce a coordination failure in which every SMR developer waits for another to move first, and no developer benefits from moving alone.
This dynamic is visible in the HALEU supply chain that most advanced SMR designs depend on. Enrichment facilities require approximately thirty years of steady operation to recover capital investment. Most advanced SMR designs remain unlicensed. Developers cannot commit to fuel purchases before licensing, and enrichers cannot build capacity without committed offtake. Neither side has an incentive to move first, and the sector stalls.
Breaking a coordination failure of this kind typically requires an external actor willing to absorb first-mover risk. In practice, this role falls to governments. The US Department of Energy’s $2.7 billion HALEU procurement program is an example of the public sector acting as coordinator of last resort. The private market cannot resolve the problem quickly enough to preserve the current cohort of SMR developers.
The HALEU Standoff as a Game of Chicken
The HALEU supply problem can also be modeled as a game of Chicken, in which two parties approach a collision and the first to swerve loses. Enrichers wait for committed offtake. SMR developers wait for licensing. Whoever moves first carries the financial risk of being wrong, and both sides have an incentive to delay.
The distinguishing feature of Chicken is that the cost of moving first is borne entirely by the first mover, while the benefit of resolution is shared. This asymmetry explains why private actors in the SMR fuel cycle have consistently delayed commitments even when the strategic case for domestic HALEU capacity is widely accepted.
Government intervention corrects the incentive structure of the market. By committing to purchase HALEU before commercial demand exists, the Department of Energy changes the payoff matrix for private enrichers. The risk of moving first is transferred to the public balance sheet, and the private participant is left with a decision that no longer carries a first-mover penalty.
Costly Signaling and the Limits of Federal Selection
A third concept relevant to the SMR market is signaling. In situations where participants have incomplete information about each other’s quality, they rely on signals. Signals are credible only when they are costly to send.
Non-binding memoranda of understanding are cheap talk. They cost nothing to sign and therefore reveal preference, not commitment. NANO Nuclear’s MOU with Enveniam, signed in September 2026, covers six SMR workstreams across fuel transportation, conversion, microreactor commercialization, advanced manufacturing, domestic supply chain, and commercial energy markets. The document binds neither party and commits no funding.
Federal program selections function differently. Being named to the Department of Energy’s reactor pilot program or the Department of Defense’s ANPI list requires an SMR design mature enough to be assessed and a company stable enough to be selected. SMR developers appearing on multiple government lists, including Oklo, Antares Nuclear, and Radiant Industries, have cleared more than one evaluation.
Even costly signals have limits. Federal selection does not constitute a paying customer. An SMR developer can hold a credible design, appear on multiple government lists, and still lack a signed buyer or a funded path to construction. The gap between a design existing and a project being financeable determines which SMR developers remain operational at the end of the decade.
Selection Drives Efficiency
A persistent assumption in the SMR sector is that the most efficient design will be selected. Historical evidence from comparable capital-intensive industries suggests the opposite. As François Lévêque has argued, a technology becomes widespread first, and efficient second. Unit costs decline through cumulative production, not through design optimization alone.
This has direct implications for the current SMR race. The first developers to secure regulatory approval, binding orders, and operating experience will begin accumulating learning-curve advantage before their competitors have completed licensing. Late entrants will face a market in which SMR cost benchmarks have already been set by earlier movers.
Implications for Investment Screening
If the SMR race is fundamentally a coordination problem, investment screening criteria should be recalibrated. The relevant question is which SMR developer can remain solvent until the coordination problem resolves.
Three categories of SMR developer are positioned to survive this period. Those with access to sovereign credit facilities, such as Rolls-Royce SMR’s £599 million loan from the UK National Wealth Fund. Those with hyperscaler customers willing to pay between $107 and $130 per megawatt-hour. And those with an existing revenue base that funds development without external capital.
SMR developers outside these categories face a straightforward calculation. Their financial runway must be long enough to outlast a coordination problem whose resolution timeline is not under their control.
The SMR race is a competition over coordination. The decisive capability is the ability to align fuel suppliers, manufacturers, regulators, and customers toward a common deployment timeline. This is a game of capital endurance. The SMR announcements that attract the most attention are frequently the ones that commit the least.
Full SMR developer-by-developer assessment covering customers, fuel, and deployment status is in the SMR Market Intelligence Report 2027.
