BrenX Ltd. (NASDAQ: BRNX) has reported preliminary operating data from its flagship industrial project at Tempo Beverages in Israel, indicating that its 32 MWh bGen™ thermal energy storage system is supplying steam at a cost roughly 40% below a modeled heavy fuel oil steam baseline. The company estimates that if current performance is sustained, Tempo could save approximately $1.0 million annually, or about $15 million over 15 years. For the five operating days from October 25 to 29, net energy cost savings were estimated at about $18,200, or $3,640 per operating day, assuming 280 operating days per year and net of maintenance costs.
The preliminary results matter because they offer one of the first real-world validations of thermal energy storage as a cost-competitive alternative to fossil fuel boilers. BrenX said the system has also outperformed its base case on production, reaching approximately 85 tons of steam per operating day during commissioning, about 21% above the project's base case of roughly 70 tons. The company is targeting full replacement of Tempo's steam demand and has said steam sales above the contracted minimum can generate revenue beyond the baseline in the project's financial model.
BrenX has also developed a digital platform that gives Tempo live access to steam output, electrical power, pressure, temperature, charging costs, energy savings and avoided carbon emissions. A built-in savings calculator lets users model results under different electricity tariffs. The company said that for a business introducing a new kind of industrial energy system, such transparency can help shorten the sales cycle by allowing plant managers and CFOs to see preliminary operating data indicating potential customer energy cost savings.
The timing of the data works in BrenX's favor. In late October, the Dutch TTF benchmark for European natural gas rose above 100 euros per megawatt-hour, its highest level since 2022. For European manufacturers that burn gas to produce steam, those prices flow directly into operating costs. One way to counter that is through electrification. According to the International Energy Agency, Nearly 40% of fossil-fuel-based low- and medium-temperature industrial heat could be electrified cost-effectively, and the IEA pointed to thermal storage as an "increasingly promising" solution, with food processing and dairy among the industries best suited for electrification.
Tempo is the first proof point in a broader strategy for BrenX, which rebranded from Brenmiller Energy in August and has expanded its focus to developing, owning, operating and optimizing energy assets that may combine local generation, electrical and thermal storage, grid connectivity and intelligent energy management. The company believes that demonstrating sustained customer savings could support broader adoption of its energy services model and the development of recurring revenue from industrial energy services. In Hungary, BrenX owns and is operating a 1.2 MWp solar facility in Kaposszekcső and has signed a definitive agreement to buy adjacent land for its planned first integrated energy resource center. In Israel, construction is underway on a 12 MWh bGen™ system at Wolfson Medical Center in Holon, designed to replace the hospital's fuel-oil boilers and expected to save approximately $1.5 million in annual energy costs.
The next milestone for investors is the completion of commissioning at Tempo and the start of commercial operations, followed by validation of sustained operating performance and customer savings. For those tracking the company, the preliminary data was published on Benzinga, and additional details about BrenX are available through its website, where interested parties can click here. The original release can be viewed on www.newmediawire.com.
