Quantum for Energy and Utilities 2026

Power and grid infrastructure3 As power systems become more decentralized and volatile, quantum technologies could improve grid control, security and energy storage. 3.1 Transmission Transmission system operators (TSOs) manage the high-voltage backbone of the grid. Their core challenge is maintaining stability and flow control in a network increasingly dominated by inverter- based resources. Optimal power flow (OPF) OPF is the mathematical problem of determining the most efficient generator dispatch settings to meet demand while respecting physical grid constraints (such as thermal limits and voltage stability). Optimizing power flows across a large grid is computationally hard, so real operations often use simplified models. Quantum methods, typically paired with classical computers, aim to explore more options faster and surface better operating points; pilots such as E.ON working with D-Wave have tested this method on renewable-heavy grid scenarios.Grid partitioning and contingency analysis To manage resilience, grids can be partitioned into self-sustaining islands (microgrids) during faults to prevent cascading blackouts. Quantum-classical hybrid solvers can optimize how a decentralized grid is split into local clusters that can “island” as microgrids. This can help absorb local surplus power and reduce the risk of cascading outages, and it fits well because the task is essentially a network-splitting problem. Real-time fault detection Transmission operators increasingly depend on high-frequency measurement streams to identify abnormal conditions before they propagate into outages. As inverter-based resources and weather-driven generation increase volatility, the value of low-latency detection and control grows. Quantum-enhanced signal processing and anomaly detection sensors are being explored to accelerate pattern recognition in high-frequency phasor measurement streams, with the goal of flagging line stress or incipient faults early enough for preventive re-dispatch, protection adjustments or operator intervention.The power grid is evolving from a centralized, unidirectional system into a “system of systems”, requiring real-time orchestration of millions of active endpoints. The integration of renewable energy and distributed energy resources (DERs) introduces stochasticity that challenges traditional grid management paradigms. Quantum for Energy and Utilities: Key Opportunities for Energy Transition 22