4.1 Immediate Transition Pathways for High-Yield Facilities
Prioritizing campus building retrofits requires a structured evaluation matrix that pairs facility heat demand intensity with available low-carbon source options. Integrating localized ground heat exchange with ambient district loops significantly reduces annual heating energy demand and greenhouse gas emissions compared to conventional centralized fossil systems [2]. However, drilling space constraints, varying soil thermal conductivity, and heterogeneous building envelope efficiencies mean that capital outlays vary widely across an institutional portfolio [1]. Implementing a spatial mapping hierarchy ensures that early-stage investments focus on facilities where thermal load profiles align closely with available ambient heat recovery capacities, avoiding excessive auxiliary energy use during peak winter loads [1], [2]. The prioritization model combines spatial land availability for boreholes, baseline building hydronic temperatures, and estimated emission displacement potential to rank candidates into immediate, medium-term, and network-dependent deployment phases. By linking capital planning to spatial resource availability, institutional leadership can phase thermal electrification without exceeding financial or spatial capacity thresholds [1].