Dieltech s.r.l.

SisTEA is Dieltech’s flagship micro-CAES platform, a modular energy storage solution engineered to deliver time-independent storage of up to 7 kWh per sub-module. By integrating advanced technologies into a single, highly coordinated architecture, SisTEA establishes a new standard in efficiency, reliability, and environmental sustainability. The system is built around a scalable configuration in which the common module is dimensioned according to the required power output, while storage sub-modules can be connected in parallel to match the desired energy capacity. This modular design ensures exceptional flexibility and allows SisTEA to adapt seamlessly to a wide range of operational and user-specific requirements. SisTEA is capable of storing and releasing both thermal and electrical energy, offering a versatile response to evolving energy demands. Its architecture enables theoretically indefinite energy retention, with no characteristic discharge time and no mechanical losses, delivering a highly resilient and long-duration storage solution. In addition, the system is fully green, as it contains no chemical or hazardous substances. At the core of SisTEA is an intercooled breathable-air compression unit. Manufactured using innovative technical ceramics, the compressor is designed to achieve high operating pressures safely and efficiently while ensuring optimal thermal exchange. Its geometry is the result of advanced fluid mechanics research, developed to guarantee heavy-duty operation and best-in-class performance. The thermal energy generated during compression is extracted from the main compressor and transferred to an innovative metallic hydrides subsystem located within a closed, pressurized hydrogen circuit. Through this process, the hydrides reversibly adsorb hydrogen atoms, enabling highly effective thermal energy management and recovery. During discharge, the stored mechanical energy is converted into electrical power through a three-phase asynchronous generator directly connected to the grid. System operation is managed by a central embedded controller that coordinates all interconnected sub-modules, continuously identifying the optimal point of work and, through self-learning time-series data acquisition, anticipating user behavior to further enhance performance. A fully operational SisTEA prototype is currently deployed as a cut-off filter for power peaks on a 90 kWp wind turbine in Southern Italy. Measured energy extraction from peak events is approximately 12 kWh for each full charge cycle, while overall system efficiency is currently around 60%.

VAYSA is a revolutionary vertical-axis wind turbine designed to disrupt a renewable energy market saturated by standard, heavy-duty horizontal systems. Abandoning the brute-force mass of legacy turbines, VAYSA leverages advanced physics to maximize aerodynamic efficiency while radically shrinking the physical footprint of power generation. This deep-tech approach fundamentally redefines the economics and global accessibility of modern wind power. The core of VAYSA is engineered using advanced computational fluid dynamics to craft optimized blade profiles that extract maximum kinetic energy from the wind. It operates as a fully integrated cyber-physical system driven by an advanced embedded controller running a real-time operating system. Utilizing sensor fusion and predictive algorithms, the system continuously monitors structural health, optimizes mechanical performance, and perfectly synchronizes with smart grids. The defining breakthrough of VAYSA is its highly innovative, ultra-lightweight structural architecture that completely reimagines mechanical load distribution. This design achieves an incredibly low moment of inertia while drastically reducing the reliance on heavy, expensive materials like steel and carbon fiber. Furthermore, the system is entirely modular, allowing users to seamlessly scale power output by stacking standardized, pre-assembled modules to their desired height. By combining aerospace-grade lightweight engineering with modular in-situ assembly, VAYSA completely eliminates the need for expensive heavy cranes and oversized transport logistics. This translates into an unbeatable low-cost solution that significantly lowers both capital and operational expenditures compared to traditional alternatives. Consequently, VAYSA can be rapidly deployed in remote, hard-to-access, or eco-sensitive areas where standard competitors simply cannot operate.