When energy storage comes up, most people picture a battery that later returns electricity to the grid. Many factories, however, need heat rather than electricity at the point of use. Thermal energy storage addresses that different requirement: capture energy as heat, hold it and supply it to an industrial process when needed. For Ariel Malik, this shift in perspective is an example of matching technology to the actual task.
How does industrial thermal storage work?
A system can use electricity or recovered process heat to warm a storage medium. That medium may be a solid, liquid or phase-change material, depending on the design and temperature required. Later, the system delivers heat, steam or another useful thermal output. It does not follow that every stored unit of heat can be turned back into electricity efficiently. A project should define its intended output from the start.
The Australian Renewable Energy Agency, ARENA, has supported projects exploring this approach. Its MGA Thermal demonstration was designed around a modular thermal storage system. A separate 2026 ARENA announcement described work to move industrial thermal storage opportunities closer to investment readiness through technical designs and commercial analysis. These are demonstrations and development efforts, not proof that every factory can adopt the same configuration.
Where might the commercial value appear?
Thermal storage can help a site shift electricity use to periods when power is available or more attractive in price, then meet heat demand later. It may also make it easier to integrate variable renewable generation into industrial operations. The case depends on the process temperature, the number of operating hours, the available space, the heat-delivery rate and the cost of alternative fuels.
This complements the earlier discussion of materials and energy efficiency in Australian buildings. Better insulation reduces heat demand in one setting. Industrial storage changes when and how heat is supplied in another. The underlying discipline is the same: measure the thermal problem before selecting a technology.
What must a pilot prove?
- Reliable heat delivery at the temperature and rate the process requires.
- Performance across repeated charge and discharge cycles.
- Compatibility with existing plant equipment and operating schedules.
- A credible lifecycle cost, including maintenance and integration.
Operators also need to consider what happens during maintenance or an unexpected process interruption. A thermal system that saves energy but creates production risk may fail the practical test. This is why demonstration projects and site-specific engineering matter as much as the storage material.
From a promising material to a useful system
Ariel Malik's broader interest in energy technology points to a simple commercial principle: a material is valuable when it solves a real operating problem at scale. Thermal storage may serve industries where heat is the product they actually need. Its success should be judged by delivered heat, reliability and economics, rather than by how closely it resembles a conventional electric battery.
Sources: ARENA, MGA Thermal Energy Storage Project; ARENA, industrial decarbonisation announcement. Photo: Maksym Kaharlytskyi / Unsplash.
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