Today 1414 Degrees provided the June Quarterly updated to the ASX, outlining progress on key milestones in its approach to achieving commercial outcomes for the company’s thermal energy storage technology.

Executive Chairman, Dr Kevin Moriarty wrote to shareholders today summarising the key updates. His correspondence and the Quarterly update are provided below.


  • SiBox demonstration module successfully completes commissioning trials
  • SiBrick named and being readied for mass production trials
  • Study shows competitive opportunities for SiBox to replace gas in industrial processing
  • Business strategy focuses on revenue from licencing fees

Chairman’s Letter

The quarter has been pivotal in the development of the Company’s key technologies for commercialisation. Four years of intensive development of our SiBox® latent heat battery is producing very encouraging results. This progress coincides with growing interest from high-temperature industrial heat users. It’s worth mentioning that there are currently few competitive technologies in the industrial heat market, and those that exist are still in their early stages. While hydrogen burning is considered a potential competitor for producing clean industrial heat, its high cost compared to SiBox make it a less viable substitute for fossil fuels.

Interestingly, SiBox has the potential to contribute to reducing the cost and emissions of hydrogen production, therefore contributing to the many complementary technologies needed to reach net zero targets.

Our commercialisation strategy and timeline has been coming into focus during the quarter. Our SiBrick technology is being developed for mass production in existing refractory brick plants. This approach eliminates the need to build new production facilities, thereby removing a significant scale-up barrier to manufacturing large storage capacity. The SiBrick installed in the SiBox Demonstration Module (SDM) comprises a single 1 MWh storage block that can be replicated laterally or extended to increase the capacity and power output.

In the coming months our engineers will use the performance results from the SDM to design a commercial scale SiBox of up to 100 MWh, as specified in our SiBox development agreement with Woodside Energy Technologies (Woodside). As announced in 2021, upon the successful verification of the SDM, Woodside has the option to fund this commercial pilot and earn up to 49% of the SiBox intellectual property.

Our high level economic analysis announced early in the quarter showed that SiBox technology is already competitive in countries exposed to increasing gas and fossil fuel prices. It is even more competitive in countries with emissions penalties, particularly if Carbon Border Adjustment Mechanisms apply.  Additionally, our analysts predict that the build cost of SiBox will decrease with increasing capacity. A one GWh SiBox could supply up to 125 MW of highly efficient electrically generated heat to an industrial process.

Our business strategy entails licencing third-party engineering supply companies to build and deploy SiBox while 1414 Degrees continues to focus on the research and development of improved models for evolving technologies as the energy transition progresses. Initial limiting factors are likely to be the willingness of industries to retrofit the devices into existing processes, and the availability of low-cost electricity. Replacing large amounts of fossil fuels in industry will require a great expansion of renewable or other forms of electricity generation.

We had an enthusiastic response to our appeal for shareholders to name our silicon latent heat brick, with some very intriguing suggestions. My personal favourite was the amusing Silibrick, with ‘SiBrick’ being chosen and trademarked as the final name. To provide interested shareholders with a better understanding of SiBox we will be running tours of our workshop in the coming weeks.

The generator performance study for the Aurora Energy Project (Aurora) grid scale battery is complete, with the report expected by the end of July, but will not be submitted for regulatory approval until access to the transmission line has been secured. This will further delay the project and the benefits it brings to the national electricity network.

The quarter also saw the company provide some outlook on generating revenue from commercialisation. The Aurora BESS is still the most immediate prospect for generating net revenue.

The proposed commercial SiBox pilot could earn net revenues by displacing gas in an existing plant, so our technical analysts have been modelling potential revenue generation from growing SiBox deployment over decades as heat energy transitions to electricity. The results will be refined in the coming months with input from experienced economic analysts.

I look forward to reporting on a productive next quarter for shareholders.

Dr Kevin Moriarty

SiBox® Development Report

The commissioning trials of the SiBox Demonstration Module (SDM) have been successfully concluded, preparing for long term operational testing. 

The SDM comprises a modular arrangement of SiBricks optimised for energy storage capacity and effective heat transfer from the heating system through to hot clean air to recover the heat on demand. The SiBricks are contained within an insulated heat store and integrated with an energy recovery system that simulates a commercial application process such as a gas burner replacement in an alumina calciner.


The commissioning process included extensive trials to demonstrate SiBox operational capabilities, optimise control setpoints, generate initial results for analysis, and identify key parameters to inform future tests. The SiBox performed to expectations and analysis and comparison of the results with the theoretical models is ongoing.

As announced during the quarter, the commissioning trials successfully demonstrated the ability to deliver sustained clean heat for 6-12 hours at temperatures of 700°C to 850°C. 

Data from these trials closely align with the expectations from the engineering design tools and models developed, providing confidence for scale up designs of SiBox technology.

The 1 MWh of internal SiBricks performed robustly and were found in excellent condition on visual inspection. Several SiBricks were removed for analytical testing at different stages. 

The 12-month test runs of the SDM will simulate a variety of process conditions to validate both the SiBrick material and SiBox system performance. The key assessments include temperature distribution, heat transfer mechanics and fluid dynamics for outlet temperature control.

Figure 1. Discharge temperature versus time for SiBox runs with and without control system intervention. Note longer and precise temperature in controlled runs.

Commercialisation Report


SiBox® thermal energy storage aims to facilitate a cost-efficient energy transition pathway for even the hardest-to-decarbonise industrial sectors, replacing significant amounts of fossil fuels. Decarbonising high temperature processes that rely on natural gas presents a significant challenge and our SiBox is specifically designed for this very high temperature market. Recent analysis by 1414 Degrees revealed a significant finding: retrofitting a renewable powered SiBox can provide a much higher value proposition than incumbent fossil fuels as it can provide grid stability services in addition to the decarbonisation benefits. The analysis also found that gas supply constraints that are likely to continue in the foreseeable future will enable the SiBox technology to achieve cost-competitiveness earlier than anticipated. 


1414 Degrees’ proprietary thermal storage media, named SiBrick from 260 names suggested by shareholders, is at the core of the SiBox technology. It represents a significant breakthrough in harnessing the powerful latent heat capabilities of silicon for enabling a zero-carbon future. For over three years 1414 Degrees has been working under a technology partnership agreement with a global refractory manufacturer, Refratechnik-Steel Gmbh, to develop a mass-producible SiBrick. Refratechnik and 1414 Degrees are preparing for a production trial of 600 bricks in the next quarter. Future SiBox models could utilise up to 100,000 SiBricks per unit and underpin the commercialisation strategy with lower unit production costs. 


Green heat is a relatively new, but very large, market targeted by SiBox. The Demonstration Module showcases the technical and engineering capabilities of our technology for ultra-high temperature industries. Replacing even a portion of fossil fuel consumption in this multi-trillion-dollar market is incentivised by various forms of carbon taxes or penalties. 1414 Degrees’ technology can help major industries to reduce their compliance costs while producing greener products — ­cement, aluminium and steel. Our team are using data provided by industries to prepare the financial case to adopt our technology to reduce production cost and emissions. The results are being analysed by specialists and a report is expected in the current quarter.


Graham Davies has taken over from Tom Thwaites as General Manager – Aurora for 1414 Degrees. On secondment from Arup, Graham is a chartered engineer with over 25 years experience and a particular interest in heat transfer and renewable energy. We thank Tom for his service to the company at a critical juncture. Graham’s focus is on obtaining transmission line connection for the Aurora Energy Project initiatives in renewable generation, grid stability and transition technology.


Your Company ended the quarter with $1.95 million in cash, a decrease of $755,000 from the previous quarter.

As required by ASX Listing Rule 4.7C3, the Company notes that $50,000 was paid to related parties during the quarter. These payments were Directors Fees.