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.

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.

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.

Why should energy storage projects be built with AC blocks?

The development timeline for energy storage projects built with AC blocks can also be shorter, with fewer total shipments of equipment required to get the project built and running. AC blocks connect directly to medium voltage transformers, simplifying the interconnection process as well.

Are AC and DC block configurations a good choice for energy storage sites?

With this technology now available, AC and DC block configurations are both competitive options for energy storage sites. Each offer distinct advantages that can be leveraged depending on the requirements and scope of your project.

Could Tesla's megablock save energy?

·Tesla Battery storage like Tesla’s Megablock would also allow energy producers like solar and wind installations to offload excess energy when energy generation is highest and discharge that energy when generation is low, for instance at night.