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With global energy demand at an all-time high, battery storage is evolving from a flexible filler into a critical grid resource. Success in this new era depends less on the hardware itself and more on the digital intelligence used to run it. By leveraging a digital layer to optimize the economics of battery assets, utilities are now rethinking BESS as a high-value, GW-scale engine for reliability and market participation.

To understand what this means on a practical level, we sat down with Brian Fellon, the Senior Vice President of Power Solutions at Xpansiv. He explains why battery energy storage systems are no longer an optional add-on but a critical backbone for grid operators. We also explore how utilities are moving from small-scale pilots to gigawatt-scale operations, the role of batteries in managing volatile demand from data centers, how real-time market participation demonstrates measurable value to regulators and ratepayers and much more. 

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