Oklo vs NuScale: Comparing Two Nuclear SMR Stock Opportunities in 2026

Small Modular Reactors (SMRs) are a game-changer in the energy world, designed to be smaller, more flexible, and potentially more cost-effective than traditional large nuclear power plants. Think of them as the 'mini-fridges' of nuclear energy – compact, factory-built, and easier to deploy closer to where power is needed, like data centers or industrial facilities. This modularity is a key advantage, allowing for incremental power additions rather than massive, multi-year construction projects. The global demand for reliable, clean energy, especially with the rise of AI and data centers, is creating a massive opportunity for these advanced nuclear technologies. Both Oklo and NuScale are vying to capture a piece of this future, but they're taking different paths to get there. Understanding these foundational differences is crucial before looking at their stock performance. It's not just about generating electricity; SMRs also offer potential for district heating, desalination, and even hydrogen production, broadening their market appeal.

When it comes to the heart of these companies – their reactor technology – Oklo (OKLO) and NuScale (SMR) have distinct approaches. NuScale's flagship is the NuScale Power Module (NPM), which is based on proven pressurized water-cooled reactor technology. It's designed to be fully factory fabricated, reducing on-site construction time and costs. NuScale's modules are scalable, meaning multiple 77 MWe (megawatt-electric) units can be combined to form a larger plant, offering flexibility in power output. A 6-module plant, for instance, could generate 462 MWe. Their design emphasizes passive safety features, relying on natural processes like convection and gravity for cooling, which means no operator action or external power is needed for safe shutdown.

Oklo (OKLO), on the other hand, is developing the Aurora Powerhouse, a liquid metal-cooled, metal-fueled fast reactor. This design builds on the heritage of the Experimental Breeder Reactor II (EBR-II), which operated successfully in Idaho for decades. Oklo's reactors are also designed for inherent safety, being self-stabilizing and self-controlling, cooled by natural forces. The Aurora Powerhouse is envisioned to have a maximum power level of 75 MWe per unit. Oklo is pursuing a multi-faceted business, including clean power, advanced nuclear fuel, and critical radioisotopes, with its Groves Isotope Test Reactor being a key project.

The path to commercializing nuclear technology is heavily reliant on regulatory approvals, primarily from the U.S. Nuclear Regulatory Commission (NRC) and the Department of Energy (DOE). NuScale (SMR) has made significant strides here, becoming the first and only SMR design to receive certification from the U.S. NRC for its 50 MWe design in 2020. Building on this, NuScale received Standard Design Approval (SDA) from the NRC for its uprated 77 MWe design in May 2025, marking another major licensing milestone. This approval allows companies to reference NuScale's design when applying for combined licenses to build reactors at specific sites. NuScale is also performing front-end engineering work for a 462-MWe power plant in Romania and has 12 power modules in production.

Oklo (OKLO) has also been actively pursuing regulatory pathways. While their initial combined license application to the NRC for the Aurora Powerhouse in 2020 faced challenges due to insufficient data in 2022, they've since pivoted and made progress through the DOE's Reactor Pilot Program (RPP). In March 2026, Oklo received two nuclear safety design agreement (NSDA) approvals from the DOE and a materials license from the NRC for its Idaho Radiochemistry Laboratory, which is expected to generate its first revenue this year from isotope production. More recently, in July 2026, the U.S. Department of Energy approved the Documented Safety Analysis for Oklo's Groves Isotope Test Reactor in Texas, targeting first criticality for July 2026. The NRC also approved Oklo's Principal Design Criteria (PDC) topical report for the Aurora powerhouse in Idaho in May 2026, which streamlines future licensing by establishing a regulatory framework.

Both Oklo (OKLO) and NuScale (SMR) are pre-commercial, meaning they haven't started generating significant revenue from their main power-producing reactors yet, but their business models and paths to commercialization differ. NuScale operates with a modular approach, aiming to sell its SMR technology and services to utilities and industrial customers. Their scalable design allows for flexibility in meeting various energy needs, from power generation to process heat. NuScale has secured partnerships, including front-end engineering work for a plant in Romania and a deployment of 6 gigawatts (GW) of SMRs to the Tennessee Valley Authority (TVA), though commercial operation for these is still a few years out. The U.S. Department of Energy has also provided over $575 million in support of NuScale's design and licensing.

Oklo (OKLO) is pursuing a vertically integrated, build-own-operate model, aiming to not only develop but also own and operate its advanced nuclear facilities. Beyond power generation with its Aurora Powerhouse, Oklo is also focusing on advanced nuclear fuel and critical radioisotope production. The company expects to make its first revenue this year from its Idaho Radiochemistry Laboratory, which has received a materials license from the NRC for isotope work. Oklo has also been selected by the U.S. Department of Energy for advanced negotiations under the Surplus Plutonium Utilization Program, highlighting a potential fuel supply chain advantage. The company has also signed an agreement with Meta for power, which includes a prepayment mechanism to fund early-stage development.

As of July 2026, both Oklo (OKLO) and NuScale (SMR) are speculative investments, reflecting their pre-commercial status and the capital-intensive nature of nuclear development. Oklo's stock price was around $45.75 on July 16, 2026, with a market capitalization of approximately $7.15 billion. The company reported a Q1 2026 EPS of -$0.19, meeting analyst expectations. Analysts have a consensus 'Moderate Buy' rating for Oklo, with an average 12-month price target of $84.00, implying significant upside from current levels. Oklo's cash position is strong, with $2.5 billion in cash and marketable securities as of March 31, 2026, providing a long runway given its Q1 2026 operating cash burn of $17.9 million. However, the stock has been volatile, down 41% in 2026, with some insider selling reported in June and July 2026.

NuScale (SMR) was trading around $7.64 on July 17, 2026, with a market cap of approximately $2.82 billion. NuScale announced Q1 2026 earnings on May 7, 2026, reporting an EPS of -$0.14, missing consensus estimates, and quarterly revenue falling 95.8% year-over-year to $0.57 million. The next earnings report is estimated for August 5, 2026. Analysts have an average 12-month price target of $15.46, representing a potential upside of over 100% from its July 2026 price. NuScale's stock has also seen significant volatility, trading 75% below its all-time highs as of June 2026. Both companies are burning cash as they develop their technologies, making their cash reserves and ability to secure future funding critical for their long-term success.