South America Nuclear Reactor Construction Market: Market Size & Forecast 2026

South America maintains a specialized nuclear energy sector with operational capacity concentrated in Brazil and Argentina, making it one of the smaller regional nuclear markets globally. The market represents construction activities ranging from completing delayed reactor projects to maintaining existing infrastructure and exploring new build programs. Regional nuclear development operates within a broader Latin American construction industry context that encompasses extensive infrastructure and energy projects.

• •Brazil operates two reactors at Angra dos Reis (Angra 1 and 2) with Angra 3 under construction
• •Argentina operates three reactors including Atucha I, Atucha II, and Embalse, maintaining the region's longest nuclear operating history
• •Several Latin American nations have expressed interest in nuclear energy for baseload power generation

Energy security concerns and the need for reliable baseload power remain primary catalysts for market expansion, particularly in countries seeking to reduce dependence on imported hydrocarbons. Climate commitments and decarbonization targets are positioning nuclear energy as a complementary solution alongside renewable energy sources. Government policies promoting energy mix diversification and international cooperation agreements continue to support construction initiatives.

• •Rising electricity demand driven by industrialization and growing populations
• •Need to meet climate targets while ensuring stable energy supply
• •Government policies supporting energy source diversification

The market exhibits high geographic concentration, with Brazil and Argentina accounting for virtually all nuclear capacity and active construction projects in the region. Brazil's Angra 3 project at the Central Nuclear Almirante Álvaro Alberto represents the primary ongoing construction effort, though it has experienced significant timeline extensions. Other regional countries including Chile, Colombia, and Mexico have periodically explored nuclear options but remain in early-stage feasibility or policy discussion phases.

• •Brazil leads regional construction efforts with the long-delayed Angra 3 project
• •Argentina maintains established nuclear infrastructure with ongoing operational experience
• •Chile and other nations have conducted feasibility studies but have not advanced to active construction

What are the recent trends and outlook?

The region is exploring advanced reactor technologies, including small modular reactors, which may offer reduced capital requirements and shorter construction timelines compared to traditional large-scale plants. Decarbonization goals and energy security considerations have renewed discussions about expanding nuclear capacity in several countries. However, project completion challenges, financing requirements, and competition from other energy sources will continue to shape the market's development trajectory.

• •Small modular reactor designs are being evaluated for potential deployment in the region
• •Several countries are conducting feasibility studies for potential new nuclear programs
• •Project delays, financing constraints, and regulatory processes remain significant implementation challenges