Small-scale AiO BESS

Delta's AiO BESS is an energy storage system that seamlessly integrates a power conditioning system (PCS), an advanced battery system with a built-in battery management system (BMS), and a cooling system into a compact, all-in-one solution. This offering is targeted at businesses that require less than 1MW or 4 MWh of energy storage for applications such as commercial buildings, campuses, small-scale factories, shopping centres, charging stations, aged care centres, etc.

Its robust construction allows it to withstand harsh environmental conditions. This versatile system is scalable and suitable for various configurations, including grid-tied and off-grid scenarios such as power backup, peak shaving, load shifting, PV self-consumption, PV smoothing and diesel displacement (replacing diesel generators).

Designed for superior power efficiency and space optimisation, the AiO BESS features liquid-cooled battery modules that maintain optimal temperature uniformity, enhancing performance and extending battery life. It is also available with optional DC integration with PV, providing a truly integrated renewable generation and storage package.

The system includes the DeltaGrid® EM energy management system, which is a forward-looking digital platform that leverages AIoT (Artificial Intelligence of Things) technologies, energy control, cybersecurity and reliability technologies for microgrid energy consumption optimisation, utility ancillary services, distributed energy resource (DER) generation monitoring, reduction of carbon emissions tracking and other applications. Its control modes and AI algorithm can control energy flows precisely and automatically, thus optimising energy usage, maximising system performance and making your energy systems more valuable and economical.

What does Delta’s all-in-one BESS include?: Delta’s all-in-one solution combines the battery system, power conversion system (PCS), cooling system, and control functions into a single cabinet, which simplifies installation and reduces the amount of auxiliary equipment required onsite.
What applications is this small-scale all-in-one BESS suited to?: This system is for commercial and industrial applications such as factories, commercial buildings, campuses, and EV charging sites. Typical use cases include peak shaving, load shifting, backup power, PV self-consumption, and PV smoothing, which makes it relevant for sites that want to lower demand charges, improve resilience, or better manage variable solar production.
What are the main commercial benefits of a small-scale BESS for a business?: For most commercial and industrial users, the value of a system like this comes from reducing peak demand charges, shifting energy use away from expensive tariff periods, improving solar self-consumption, and providing backup capability when the grid is unstable. Because Delta’s system integrates the PCS, battery, controls, and cooling into one package, it is also intended to reduce deployment complexity compared with more fragmented site-built systems.
Is Delta’s all-in-one BESS scalable if the site grows?: Yes. One of the core benefits of Delta’s all-in-one system is that it is designed as a scalable platform. Up to 10 cabinets can be operated in parallel for larger commercial and industrial installations, which allows a site to start with a smaller configuration and expand over time.

Small-scale BESS