> ## Documentation Index
> Fetch the complete documentation index at: https://documentation.kodelabs.com/llms.txt
> Use this file to discover all available pages before exploring further.
# Benchmarking and intensity metrics
> How EnerG normalizes energy, water, and carbon by area to rank buildings fairly across a portfolio
Benchmarking compares buildings of different sizes on a fair basis. EnerG normalizes usage by area, then ranks and colors buildings by percentile. This page explains the intensity metrics and how rankings work.
To use the ranking view, see [Portfolio Home](/products/energ/analytics/benchmarking).
## Why normalize by area
Total usage favors small buildings and penalizes large ones. A tower always uses more energy than a branch office, even when the tower runs more efficiently.
Intensity metrics divide usage by floor area. A small site can use less total energy and still rank worse per square foot. Normalization is what makes cross-building comparison meaningful.
## The three intensity lenses
Portfolio Home ranks buildings through three metric lenses.
| Metric | Definition |
| -------------------------------------------------------------------------------------------------------------------- | ---------------------------------------------------------------------------------------- |
| EUI | Annual energy divided by conditioned area, after fuels convert to a common unit |
| WUI | Annual water divided by area or another relevant denominator |
| GHG | Greenhouse gas emissions, tied to area, occupancy, or revenue by your reporting standard |
All three lenses share the same layout. Only the metric labels and ranking logic change.
## How rankings and percentiles work
EnerG ranks every qualifying building by the active metric, then colors it by percentile band.
| Band | Percentile |
| ------ | ------------------------------ |
| Green | Top 25% |
| Yellow | 25–50% |
| Orange | 50–75% |
| Red | 75–100% |
| Blue | No ranking (insufficient data) |
Lower intensity is better, so top performers sit in the green band. The same colors appear on the map, the ranking chart, and building cards.
## Completeness sets who qualifies
Benchmarking only scores buildings that meet your completeness threshold. Buildings below it show **No Ranking** until coverage recovers.
This prevents a building with missing bills from posting a misleading intensity. See [Data completeness](/products/energ/concepts/data-completeness) for how the gate works.
## Next steps
Rank buildings and filter by EUI, WUI, and GHG.
Understand the coverage gate that decides which buildings rank.
See how GHG intensity ties to scopes and emission factors.
Compare intensity against a weather-normalized reference.