Howden to Supply Steam Turbines for Terra Innovatum’s Micro-Modular Reactor Platform

Terra Innovatum has signed a long-term steam turbine and power generator procurement agreement with Howden Turbo GmbH, a division of Chart Industries to supply critical secondary-side equipment for its SOLO micro-modular reactor platform.¹ The agreement secures steam turbine and generator supply to support the FOAK execution and global NOAK rollout of the SOLO reactor, integrating proven Howden turbine technology to reduce technical risk and accelerate standardized deployment.¹ For turbomachinery professionals, the deal is an early but concrete signal of how the emerging micro-modular reactor sector is beginning to build its industrial supply chain — and where established steam turbine manufacturers fit into it.

What Is the SOLO Reactor and Why Does the Steam Turbine Selection Matter?

The SOLO is a one-megawatt-electric, helium-cooled micro-reactor designed to run on commercially available low-enriched uranium fuel, with a modular architecture that allows multiple units to be combined for larger output.² The partnership supports flexible system architectures by integrating multiple SOLO units with a common Howden turbine platform to deliver scalable output in the approximately 3 to 15 MWe range, addressing applications from data centers and industrial facilities to remote mini-grids.¹ Howden’s selection reflects a deliberate choice to anchor the secondary side of the reactor on proven, commercially mature turbine hardware rather than purpose-built nuclear equipment — a risk-reduction strategy that mirrors approaches taken in early small modular reactor programs elsewhere.

How Does Howden’s Technology Fit the Micro-Modular Application?

Howden and Terra Innovatum adapted Howden’s existing steam turbine platform to meet the specific performance, efficiency, and integration requirements of the SOLO reactor’s power conversion system.¹ The companies are also defining commercial frameworks, production ramp-up capacity, lead-time reduction strategies, and modular skid configurations to enable rapid, high-volume rollout of SOLO reactors and associated balance-of-plant equipment.¹ The emphasis on skid-level standardization and repeatable production points to an attempt to industrialize reactor deployment in a way that more closely resembles manufactured product rollout than traditional power plant construction.

Marco Cherubini, Co-Founder and CTO of Terra Innovatum, noted that Howden’s track record in steam turbine technology substantially reduces risk for both the first-of-a-kind deployment and longer-term scaling. Volker Brakel, Head of Steam Turbines at Howden, pointed to the SOLO’s modular architecture and defined market timing as the basis for building a credible industrial roadmap around the platform.¹

What Does This Mean for the Turbomachinery Sector?

Terra Innovatum has already selected its FOAK site at Rock City Admiral Parkway Development in Illinois, targeting deployment by 2027, and has entered into non-binding MOUs for up to 100 SOLO units worldwide.¹ The U.S. Nuclear Regulatory Commission is currently engaged in pre-application review activities with Terra Innovatum, with the NRC having indicated its intent to issue a Safety Evaluation of the SOLO Pre-Decisional Concept report by April 2026.² If those deployments materialize, the volume of steam turbine equipment required — even at 1 MWe per unit — represents a meaningful new demand category for turbomachinery manufacturers operating in the sub-10 MWe range, a segment historically dominated by industrial waste heat recovery and geothermal applications. Whether micro-modular nuclear becomes a sustained demand driver for that class of equipment will depend heavily on regulatory progress and FOAK execution, but agreements like this one suggest the sector is moving beyond conceptual design into active supply chain development.

References
1. Terra Innovatum Global N.V. “Terra Innovatum Secures Long-Term Steam Turbine Supply with Howden, a Chart Industries Company.” GlobeNewswire, July 7, 2026. 2. U.S. Nuclear Regulatory Commission. “Terra Innovatum SOLO — Pre-Application Activities.”