What auxiliary loads are needed for a Bess project?

Fire safety systems, such as fire alarms, control panels and gas ventilation systems (if present). These auxiliary loads are essential for ensuring the safe and efficient operation of BESS projects. Therefore, providing a reliable power supply for these auxiliary loads is crucial.

What are the technical requirements and financial implications of Bess auxiliary power?

One critical but often overlooked aspect of BESS project development is the technical requirements and financial implications of BESS auxiliary power. In addition to the power required to charge its batteries, a BESS also requires power for its auxiliary loads. BESS auxiliary loads typically fall into the following three categories:

What are the requirements for auxiliary power supply circuits?

The auxiliary power supply circuit must be designed to meet the BESS product's technical requirements, which vary by product. For example, the rated voltage of the auxiliary power supply might be 400V, 480V, or 208V. The circuit must also be sized based on the peak auxiliary load of the selected BESS product and the specific project configuration.

Why is auxiliary power important in Bess project design & development?

As discussed above, auxiliary power is a vital consideration in BESS project design and development. While it is an important aspect, a comprehensive approach, such as the total cost of ownership method, should be used for BESS product evaluation and selection.

What if a Bess product does not meet backup power requirements?

If a BESS product cannot meet these backup power requirements as mandated by the code or the Authority Having Jurisdiction (AHJ), an external backup power source needs to be provided. Options for backup power include local distribution network feeders (if available with sufficient kVA rating) or backup generators.