3.1 Integration of Thermal Energy Storage Systems into Nuclear Plant Cycles
The integration of thermal energy storage systems into conventional nuclear generation cycles provides an essential buffer against the steep net-load gradients induced by variable renewable energy sources. Direct load-following in nuclear reactors introduces severe thermal stresses, xenon poisoning dynamics, and mechanical fatigue across primary coolant loops, which substantially degrades capital efficiency and operational longevity. By diverting primary steam output into secondary thermal storage media during periods of peak renewable output, the nuclear reactor core maintains steady-state operation while modulating electrical output delivered to the transmission network [1]. This decoupling mechanism preserves base-load efficiency while actively mitigating wholesale market price depression caused by renewable overgeneration. Furthermore, coordinating this thermal buffering capability with responsive consumer loads provides bidirectional flexibility across both generation and demand interfaces [6]. Grid frequency stability depends fundamentally on instantaneous reserve availability, and hybridized nuclear stations combined with responsive commercial building loads supply critical synthetic inertia and reactive power support that pure inverter-dominated systems struggle to sustain [1], [6]. Consequently, the hybrid thermal-nuclear configuration transforms base-load assets into dynamic balancing resources, aligning physical power system stability with the economic incentives of post-reform energy markets.