The gradual retirement of coal-fired power stations across the Australian electricity network is reshaping the way energy systems are planned, built and operated. For decades, coal provided a predictable and continuous supply of electricity, forming the backbone of baseload generation. As these assets are phased out, the challenge is not simply to replace their capacity, but to replicate their reliability while accommodating a rapidly increasing share of renewable energy.
Solar photovoltaic generation in particular has expanded at an extraordinary pace. Its variability, however, introduces new complexities. Electricity supply now peaks during daylight hours, while demand often rises later in the day. This mismatch has made energy storage an essential component of the modern grid. Battery energy storage systems, commonly referred to as BESS, have emerged as a practical solution to capture surplus generation and discharge it when required.
BESS installations are now expected to perform multiple roles simultaneously. They must support grid stability, provide frequency regulation, enable renewable integration and ensure supply reliability. As their importance grows, so too does the need for systems that can operate safely and efficiently at larger scales and higher energy densities.