Metrics &
KPIs

Composite Indicator

The PEAR-ROI Score

The PEAR-ROI Score is PRMS's composite performance index — a single dimensionless value (0–1) that integrates energy efficiency, water balance, ecological performance, and system autonomy into a verifiable measure of metabolic health.

It is not a rating assigned by a certifier. It is calculated continuously from operational data and updates as the building's performance evolves. A score of 0.78 — the Year 1 value for SmartLiving Milenio III — represents Level 3 Autónomo performance across all four metabolic layers.

Key Performance Indicators

What PRMS measures

Energy Domain

KPI	Unit	L1 Threshold	L2 Threshold	L3 Threshold	L4 Threshold
Energy Self-Sufficiency Index	%	≥20%	≥40%	≥70%	≥100% (net-positive)
Solar Generation Ratio	kWh generated / kWh consumed	—	≥0.4	≥0.7	≥1.0
Peak Demand Reduction	%	≥15%	≥30%	≥50%	≥70%
Energy Intensity	kWh/m²/year	≤100	≤60	≤30	Net positive

Water Domain

KPI	Unit	L1 Threshold	L2 Threshold	L3 Threshold	L4 Threshold
Water Balance Index	L consumed / L recovered	—	≥0.3	≥0.6	≥1.0 (closed cycle)
Potable Water Reduction	%	≥20%	≥40%	≥60%	≥90%
Greywater Reuse Rate	%	—	≥30%	≥60%	≥90%

Ecological & System Domain

KPI	Unit	Description
Metabolic Performance Index (MPI)	Dimensionless 0–1	Composite score integrating energy, water, and thermal domains
System Autonomy Ratio (SAR)	%	Percentage of operational needs met without external network input
Ecological Footprint Delta	m² / occupant	Reduction in ecological footprint vs. equivalent conventional building
Thermal Comfort Hours	% of occupied hours within comfort range	ASHRAE 55 or equivalent standard, measured by sensors
Data Continuity Index	% uptime	Percentage of time IoT instrumentation generates valid data

Instrumentation

How PRMS measures

All PRMS KPIs require physical instrumentation. Simulation, modeling, or estimation may support design but cannot substitute for operational data.