The mechanism is not hand-wavy. Emerald's Conductor platform integrates directly with Nvidia's DSX Flex, which can modulate GPU compute load in seconds based on a signal from the grid operator, while keeping high-priority workloads untouched.
Three flexibility levers, per the company's own technical materials: pausing batchable jobs that do not have a deadline, shifting workloads to a different region entirely, and coordinating with onsite batteries or backup generation to absorb the gap.
The proof points are not simulations. Emerald has now run five commercial demonstrations, in Arizona, Illinois, Virginia, Oregon, and London, working with Nvidia, EPRI, Oracle, Nebius, and National Grid.
The Arizona one, published in Nature Energy, cut a 256-GPU cluster's power draw by 25 percent for three straight hours during a real grid stress event in Phoenix, with workload quality of service fully maintained.
The London one is the sharper number. A Nebius facility running Nvidia Blackwell Ultra GPUs cut power draw by up to 40 percent in under a minute, hit every one of more than 200 simulated grid-event targets, and sustained a reduction for as long as 10 hours when National Grid asked for it.
With the demonstration phase now closed, the company says it has moved into commercial scaling, meaning full data centers running this in production, not pilots.