Electric — Metro
Disclosure control & data provenance
Grouping the dataset into 3 customer class groups, 1 were safe to publish and 2 were withheld under the rules below. The exact share published and the grand total are withheld here so the small suppressed group can't be recovered by subtraction; the published output carries a worst-case re-identification risk of 0% (Low).
Anomalies are flagged, not dropped; rows failing validation are quarantined as rejected. 1404 reads (7.8%) lack coordinates and are excluded from spatial views.
-
(n,k)-dominance — 1 group withheld
(triggered by your top-1 dominance limit p = 15%).
ESSnet/Eurostat SDC Handbook §4.2 (Hundepool et al.) — sensitive cells in magnitude tables
-
Complementary (secondary) suppression — 1 group withheld
(triggered by protecting a single suppressed group in its row).
ESSnet/Eurostat SDC Handbook §4.2.2 (magnitude tabular data)
-
PII handling — identifiers are excluded from the analytic
path; only disclosure-controlled aggregates are reported.
NIST SP 800-122; NISTIR 8053
| Customer class | Total consumption (kWh) | Contributors | Status |
|---|---|---|---|
| INDUSTRIAL | * | — | Withheld |
| COMMERCIAL | 101,278,040 | 250 | Published |
| RESIDENTIAL | * | — | Withheld |
Consumption profile
| 10th | 11561 |
| 25th | 16021 |
| Median | 25036 |
| 75th | 47346 |
| 90th | 164567 |
Geography & spatial clustering
No significant spatial pattern — values look randomly placed.
No statistically significant local hot or cold spots.
Weather & seasonality
E = 19979 + -9.1359·HDD + 6.3478·CDD · base 65°F · 10 months
Demand & load
| Class | Buildings | p25 | Median | p75 |
|---|---|---|---|---|
| RESIDENTIAL | 1202 | 0.198 | 0.261 | 0.299 |
| COMMERCIAL | 250 | 0.324 | 0.388 | 0.438 |
| INDUSTRIAL | 48 | 0.448 | 0.511 | 0.554 |
Benchmarking — Energy Use Intensity
| Class | Bldgs | p25 | Median | p75 | vs nat'l |
|---|---|---|---|---|---|
| RESIDENTIAL | 1202 | 24.9 | 40.1 | 65.7 | 134% |
| COMMERCIAL | 250 | 17.7 | 38.2 | 79.7 | 55% |
| INDUSTRIAL | 48 | 15.9 | 33.2 | 101.7 | — |
Energy burden & equity
Burden = annual energy cost ÷ tract median household income at $0.16/kWh. Bands: ≤6% affordable · 6–10% moderate · >10% high (ACEEE).
Measurement & verification (IPMVP Option C)
Baseline model fit on 5 months before Jul 2023; savings measured over the following 5 reporting months. Synthetic demo with no intervention — avoided energy near 0% is the method working correctly.
Differential privacy — an alternative release
An alternative to suppression: instead of hiding small groups, calibrated Laplace noise is added to each count (ε = 1.0, scale b = 1.0) so no individual's presence can be inferred while totals stay useful. Mean absolute error ±0.7 across 3 groups.
Appendix — policy & citations
| Governing standard | 15/15 rule |
| Minimum group size (k) | 15 |
| Dominance (top-n ≤ p) | 1 ≤ 0.15 |
| Min accounts for models | 15 |
| Grouping | Customer class |
- k-anonymity — Sweeney (2002); ESSnet/Eurostat SDC Handbook
- (n,k)-dominance — ESSnet SDC Handbook §4.2; CPUC 15/15
- Inequality — Gini (1912); Lorenz (1905)
- Spatial — Moran (1950); Cliff & Ord (1973)
- Weather / M&V — ASHRAE Guideline 14; IPMVP Option C; PRISM
- Benchmarking — EPA ENERGY STAR; DOE/EIA CBECS/RECS
- Load — NREL UMP; BPA M&V Peak Demand
- Burden — ACEEE; US Census ACS
- Differential privacy — Dwork et al. (2006); US Census 2020 DAS
- PII — NIST SP 800-122; NISTIR 8053; NIST SP 800-188
- Methods & Formulas — every rule & analysis with its formula-as-implemented and primary citation
Synthetic sample data — for demonstration, not distribution. Generated by UnitTrack, a Polish Clover Solutions product · 2026-07-27 19:30.