Two Leading Nuclear Stock Contenders: NuScale Power vs. Oklo - Which Offers Better Value?

NuScale Power (NYSE: SMR) and Oklo (NYSE: OKLO) represent the cutting edge of next-generation nuclear energy innovation, but their paths to commercialization and investment profiles differ significantly. Both companies are transforming the landscape with smaller, more flexible reactor designs—yet their risk-return profiles tell vastly different stories for nuclear stock investors.

Revolutionary Technology, Different Approaches

These two nuclear energy innovators take fundamentally different approaches to scaling reactor technology. NuScale manufactures small modular reactors (SMRs) that fit into compact 65-foot-high, 9-foot-wide vessel designs. The company holds exclusive Standard Design Approvals (SDAs) from the U.S. Nuclear Regulatory Commission for its 77 MWe design, currently being deployed for Romania’s RoPower facility and a substantial 462 MWe multi-unit project. Additionally, NuScale secured a landmark agreement with the Tennessee Valley Authority (TVA) to develop up to 6 gigawatts of SMR capacity across seven U.S. states.

Oklo’s strategy centers on ultra-compact microreactors—even smaller than traditional SMRs. Its Aurora microreactor generates just 1.5 MWe independently but can be networked to produce 15-100 MWe per installation. This modular flexibility makes Oklo’s design particularly attractive for remote and off-grid applications. Notably, Oklo’s microreactors employ metallic uranium fuel pellets instead of uranium dioxide, offering superior thermal resistance and lower fabrication costs. The closed-loop fuel recycling system extends operational intervals to approximately ten years between refueling cycles—compared to the standard two-year refueling requirement for conventional reactors and NuScale’s staged-fueling approach.

Timeline Realities: When Does Revenue Actually Arrive?

The commercialization timeline poses a critical challenge for both companies. NuScale’s Romanian facility, developed in partnership with Fluor Corporation, recently achieved final investment decision status, but initial reactor deployment isn’t anticipated until the early 2030s. The TVA project timeline similarly points to 2032 for initial installations.

In the interim period (2025-2028), NuScale will generate revenue primarily through front-end engineering design studies, converting initial memorandums of understanding into binding contracts, and licensing arrangements. Analysts project revenues rising from approximately $31 million in 2025 to around $287 million by 2028—a ninefold increase that still represents pre-commercialization performance.

Oklo presents a more aggressive deployment schedule, targeting initial Idaho facility operations in late 2027. If achieved, this would generate an estimated $16 million in 2027 revenues, with substantially stronger growth thereafter as the business scales. The company also secured a U.S. Air Force contract for Eielson Air Force Base in Alaska and partnered with Siemens Energy for steam turbine and generator systems.

Valuation: Why the Market Premium for Oklo?

The two companies’ market valuations diverge dramatically despite Oklo’s earlier expected commercialization. Oklo trades at a $9.7 billion market cap—commanding a remarkable 600+ times multiple of 2027 projected sales. NuScale, valued at $3.9 billion, appears comparatively conservative at 19 times 2027 sales, though still representing premium valuation for a pre-revenue nuclear innovator.

This valuation gap reflects deeper market uncertainty. Oklo’s first deployments will validate whether its microreactor approach achieves the promised efficiency and cost advantages. Beyond 2027, visibility diminishes substantially, making the $9.7 billion valuation fundamentally speculative. NuScale’s catalysts, while further out (early 2030s activation), at least provide a clearer operational pathway through its government partnerships and regulatory approvals.

Investment Considerations for Nuclear Stock Decisions

Recent stock performance tells an intriguing story: NuScale experienced a steep 80% decline in recent months, while Oklo retreated a more moderate 20%. This divergence suggests the market increasingly values Oklo’s nearer-term commercialization prospects despite its elevated valuation multiple.

For investors evaluating this nuclear stock choice, several considerations emerge. Oklo’s earlier deployment timeline and advanced fuel-recycling technology represent genuine competitive advantages, yet the valuation requires significantly more faith in execution beyond the initial 2027 deployments. NuScale benefits from larger, more certain government contracts and regulatory validation, but faces a decade-long wait for meaningful revenue inflection.

Both companies target distinct market niches—Oklo emphasizes remote and off-grid flexibility, while NuScale pursues larger regional deployments through established utility partnerships. Rather than representing direct competition, they may ultimately capture different segments of the expanding nuclear energy renaissance. For nuclear stock investors with extended time horizons, the choice depends on risk tolerance: Oklo offers explosive upside potential but exceptional valuation risk, while NuScale provides a more anchored value proposition despite longer commercialization timelines.