Data Quality Scoring
SDX assigns every building a Data Quality Grade from A to F. This grade reflects how complete, comprehensive, and current your utility data is. Higher grades produce more reliable benchmarks and increase your Data Dividend.
Three dimensions
Data quality is evaluated across three independent dimensions, each scored from 0 to 100.
1. Completeness
Completeness measures whether all expected meter readings have been received for the reporting period.
- What counts — A reading is expected for every active meter for every month (or billing period) in the trailing 12-month window.
- Gaps — Missing months reduce the completeness score proportionally.
- Example — A building with 12 of 12 monthly electricity readings and 10 of 12 gas readings has a completeness score of (12 + 10) / (12 + 12) = 91.7%.
2. Coverage
Coverage measures whether submitted meters account for the building's total consumption. SDX distinguishes between whole-building and partial metering.
- Whole-building — All energy sources flowing into the building are metered. This is the gold standard.
- Partial — Only some meters are present (e.g. electricity but not gas). Benchmarks can still be calculated but are flagged as partial.
- Scoring — Coverage is scored based on the percentage of expected utility types that have at least one active meter.
| Scenario | Coverage score |
|---|---|
| All utility types metered | 100 |
| Electricity + gas, missing water | 67 |
| Electricity only | 33 |
3. Freshness
Freshness measures how recently the most recent reading was received.
| Last reading age | Freshness score |
|---|---|
| Within 30 days | 100 |
| 31–60 days | 80 |
| 61–90 days | 60 |
| 91–180 days | 40 |
| 181–365 days | 20 |
| Over 365 days | 0 |
Composite grade
The three dimension scores are combined into a weighted composite:
Composite = (0.50 x Completeness) + (0.30 x Coverage) + (0.20 x Freshness)
The composite score maps to a letter grade:
| Composite score | Grade |
|---|---|
| 90–100 | A |
| 75–89 | B |
| 60–74 | C |
| 40–59 | D |
| 20–39 | E |
| 0–19 | F |
Where grades appear
- Building detail page — Each building shows its letter grade alongside the three dimension scores.
- Portfolio dashboard — The aggregate grade is the area-weighted average of all buildings.
- Benchmark scores — Buildings with a grade of D or below display a warning that results may be unreliable.
- Data Dividend — Grade is a direct input to the dividend formula. See How It's Calculated.
Improving your grade
- Fill gaps — Upload historical data for missing months to raise completeness.
- Add meters — Register gas, water, and district energy meters — not just electricity — to raise coverage.
- Automate — Connect automated feeds so freshness stays high without manual effort. See Submitting Data.
Grade history
SDX stores a monthly snapshot of every building's data quality grade. You can view the grade trend on the building detail page under Data Quality > History. This helps you track improvement over time and diagnose any dips.