What are AC block energy storage systems?

Innovations in string inverter technology and software controls are giving rise to AC block energy storage systems. While DC blocks will continue to have their place in the energy storage market, AC blocks provide distinct advantages such as granular control, higher availability and shorter project development timelines.

Are energy storage system integrators moving to AC block solutions?

In a recent ESN Premium article, various energy storage industry experts and executives discussed the shift toward system integrators and manufacturers more commonly offering AC block solutions, which integrate power electronics and other balance of plant within the BESS enclosure, in addition to or instead of DC blocks.

Why do energy storage systems need a DC block?

AC blocks also provide higher availability, which is defined as the percentage of time an energy storage system is online and operating at its designed capacity. If a DC block’s central inverter fails, a larger section of the energy storage system needs to be shut down to replace it.

What is a block-type thermal energy storage system?

Among the emerging solutions is a unique block-type thermal energy storage system developed by the Australian startup MGA Thermal. MGA claims that the system is more energy dense than other block-based systems, and it requires up to 24 times less land than conventional battery storage.

What is block-based thermal energy storage?

Battery storage has become commonplace for grid management, microgrids, home and commercial use, and EVS, too. However, the high performance and continuity required of some industrial processes has over-reached the limits of conventional battery technology. Block-based (aka solid-state) thermal energy storage has emerged as one solution.

How do energy storage enclosures integrate with the grid?

There are two primary configurations for integrating energy storage with the grid. The first is the AC block configuration, where string inverters are internalised in each energy storage enclosure. These inverters convert DC power from the batteries to AC, allowing the energy storage enclosure to directly interface with the grid.