Thermal Storage

Delivering dispatchable renewable energy through thermal storage innovation

Thermal storage is one of the most effective technologies to provide dispatchable renewable energy and to support the electrification of industry

At Sener, we believe that thermal storage plays a crucial role not only in enabling solar plants to deliver energy continuously, day and night, but also in helping industrial facilities decouple production processes from energy supply, improving flexibility and efficiency. Our molten salt storage solutions are a key component of hybrid renewable infrastructures, combining reliability, scalability and proven field performance.

Sener has participated in CSP projects totaling more than 2,000 MWe of installed capacity

Providing engineering, technology or construction services depending on each project’s scope. Our proprietary molten salt storage technology has been implemented in flagship plants such as Gemasolar (Spain) —which achieves up to 15 hours of energy dispatch after sunset— as well as in Kathu (South Africa) and NOORo III (Morocco), contributing to enhanced efficiency, reliability and flexibility in concentrated solar power generation

We deliver thermal storage solutions that boost plant flexibility, performance and sustainability

Our systems enhance the resilience and flexibility of renewable plants, mitigating the operational impact of curtailment events and allowing operators to store and dispatch energy when market conditions are most favorable. While thermal storage generally increases LCOE, it also improves the value of delivered energy by enabling generation during high-price periods. Every solution is engineered for durability, safety and operational efficiency across a wide range of conditions.

Why choose us

We design and implement thermal storage systems adapted to CSP, industrial heat processes and hybrid renewable plants. Our molten salt technology is the result of years of in-house R&D, focused on high energy density, thermal stability and long-duration discharge. We also integrate thermal storage with energy management systems (EMS), enabling smart control, load balancing and performance optimization.

How we work

We provide a full range of services: from conceptual engineering and feasibility studies to detailed design, commissioning and asset monitoring. Our team works closely with solar developers, utilities and industrial partners to integrate thermal storage into new or existing infrastructures. We simulate thermal behavior, assess material compatibility and implement control strategies tailored to each project’s energy profile and operating logic.

We create and integrate thermal storage from concept to commissioning

Thanks to our proprietary models and simulation tools, we adapt each solution to specific energy loads, renewable generation curves and dispatch profiles — ensuring both economic and technical performance across the system lifecycle.

Experience in thermal storage worldwide

At Sener, we transform thermal storage into a strategic energy asset — extending renewable generation, enhancing grid reliability and enabling a smarter, cleaner energy future.