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Abstract As drilling rates have improved over the past decade, flow rates continue to increase to meet the demands of hole cleaning and cuttings evacuation. This presents challenges as lateral sections become longer and hydraulic losses through the drillstring and the annulus generate higher pressures. Pumping at higher pressures is a major draw on rigsite power generation. Rig power systems are being pushed to their limit across North America, with blackout occurrences becoming more frequent. In addition, many wells are now limited by pump pressure near TD, which negatively impacts on-bottom drilling performance. Rigs are being upgraded across North America, becoming tailored for longer laterals and more challenging well trajectories. However, pumping harder at higher pressures is not always the answer. This case study focuses on a 1200HP 7500psi super triple that became limited on pressure and power draw from the three generators on site. This rig is equipped with a full suite of fuel monitoring sensors and a battery energy storage system, allowing for a complete dataset to optimize the power system for all rig operations. Flow rate tests and Equivalent Circulating Density (ECD) modelling reveal a "tipping point" in the lateral, after which higher flow rates do not yield higher ROP while maintaining effective hole cleaning and reducing power draw. This enabled a flow rate roadmap to be implemented on future wells, resulting in more consistent ROP and power draw (within capacity) throughout the lateral. The rig power system could then be further optimized, since pumping at high pressures in the lateral created the highest continuous load. This paper will explore relationships between flow rates at high pressure versus power draw and fuel consumption. Creative solutions to optimize rig power generation, manage instantaneous peak demand, and reduce diesel consumption will be discussed. A holistic approach is taken, accounting for flow rates (hole cleaning, ECD, ROP), downhole motor selection, drilling parameters, and the use of a battery energy storage system and dynamic gas blending at high substitution rates to displace diesel.