In recent years, Positive Energy Districts (PEDs) have been interpreted in many—and often conflicting—ways. This breadth has limited traction: projects defined disparate “energy-positive” metrics that were not directly tied to Paris-aligned climate neutrality. We recast PEDs as a vehicle for verifiable climate neutrality and present a declaration-ready assessment that integrates (i) a cumulative, science-based GHG budget per m² gross floor area (GFA), (ii) full life-cycle accounting, and (iii) time-resolved operational factors that include everyday motorized individual mobility (EMIM) and quantify flexibility. Two KPIs anchor the framework: the cumulative GHG LCA balance (2025–2075) against a maximum compliant budget of 320 kgCO₂e·m⁻²GFA and the annual primary-energy (PE) balance used to declare PED status with or without mobility. We follow EN 15978 system logic with PED-oriented refinements—certain biogenic storage, PV→grid substitution crediting, and omission of project-level PV embodied impacts—and apply time-resolved emission factors that decline to zero by 2050. Under this assumption, most GHG accounting past 2050 ceases to be decision-relevant; the framework’s obligation is to stay within the 2025–2050 budget. Its applicability is demonstrated on six Austrian districts spanning new build and renovation, diverse energy systems, densities, and mobility contexts. Baseline scenarios show heterogeneous outcomes—only some meet both the cumulative GHG budget and the positive primary-energy balance—but design iterations indicate that all six districts can reach the targets with realistic, ambitious packages (e.g., ecological material substitutions, PV oversizing with flexibility, GSHP/TABS, BESS/V2B, and mobility electrification/demand reduction). Hourly emission factors with rolling-average flexibility signals can materially lower import-weighted emission intensity versus monthly or annual factors and reveal seasonal import–export asymmetries that annual bookkeeping masks. Built on transparent, auditable rules and open tooling, this framework both diagnoses performance gaps and maps credible pathways to compliance—steering PED design away from project-specific targets toward verifiable climate neutrality. It now serves as the basis for a national labeling/declaration scheme, enabling broad, consistent adoption across projects.
Schneider et al. (Fri,) studied this question.