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2a9999bdf6
Wires SAP 10.2 Table 12 "Primary energy factor" column into Table 12 helpers and onto CalculatorInputs as three per-end-use factors (space heating, hot water, other). calculate_sap_from_inputs now emits primary_energy_kwh_per_yr and primary_energy_kwh_per_m2 on SapResult, matching the cert's `energy_consumption_current` field (PEUI). Triggered by a decomposition that revealed I'd been comparing our delivered energy to the cert's primary energy — apples to oranges. With proper primary-energy comparison the actual finding is: 300-cert primary-energy diff (cert calibration prices): energy MAE: 57.3 kWh/m² energy bias: +51.6 (we over-predict by ~50%) energy P50: +49.5 This is a much bigger systemic bug than the SAP MAE 5.34 suggested. Closing it requires investigating either (a) demand model over-prediction, (b) HW losses, (c) PEF values per fuel, or (d) cert reporting convention differences. Targeted for the next context. Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com> |
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| pyproject.toml | ||