# ALLIANT ENERGY - WISCONSIN POWER & LIGHT CO — Winnebago County, WI

**Citation:** NPMS FIPS 55139 / OPID 22784  
**Type / status:** inspection / current  
**Agency:** Pipeline and Hazardous Materials Safety Administration  
**Effective:** Not stated  
**Published:** 2026-07-16

0.021848 active Natural Gas pipeline miles in Winnebago County, WI; public NPMS snapshot 2026-07-16.

## Document text

ALLIANT ENERGY - WISCONSIN POWER & LIGHT CO (PHMSA OPID 22784) reported 0.021848 active Natural Gas pipeline miles in Winnebago County, WI (county FIPS 55139) in the public NPMS summary snapshot dated 2026-07-16. The snapshot includes active assets only and excludes permanently abandoned assets. Exact pipeline locations and restricted NPMS GIS data are not included.

## Provenance

- Official: Yes
- Source: <https://www.npms.phmsa.dot.gov/Documents/NPMS_Active_Pipe_County_Mileage.xlsx>
- Source ID: `npms-public-summaries`
- SHA-256: `db58b3bb6e0e6e45ab9d4248e731997065a2c4412200448b6cc6c5a2f68869bc`
- Retrieved: 2026-08-20T04:38:11.081Z
- Exported: 2026-08-26T14:11:16.811Z
- Document slug: `npms-mileage-5d9d8ea7a083760dd42dc966`

### Source metadata

```json
{
  "materialSubtype": "pipeline_mileage",
  "dataAsOf": "2026-07-16",
  "dateBasis": "data_as_of_not_publication_date",
  "fips": "55139",
  "stateFips": "55",
  "state": "WI",
  "county": "Winnebago County",
  "region": "Winnebago County, WI",
  "operator": {
    "id": "22784",
    "name": "ALLIANT ENERGY - WISCONSIN POWER & LIGHT CO"
  },
  "commodity": "Natural Gas",
  "mileage": 0.02184849,
  "plantCount": null,
  "snapshotScope": "active_assets_only",
  "personalContactDataExcluded": true,
  "restrictedGisExcluded": true,
  "provenance": {
    "workbook": "pipeline_mileage",
    "sheet": "Summary - Cnty, Oper, Commodity",
    "rowNumber": 15259,
    "rowSha256": "082f8c8ccce8f59604de1042ccb35fe9d6a1ad1371d404e28a2ae2c2c1b1163b"
  },
  "citedSections": [
    "191.29"
  ],
  "caveat": "Public aggregate snapshot only. It is not a complete representation of exact pipeline locations, may be updated, and is not an agency finding about facility condition.",
  "jurisdiction": "US",
  "operatorName": "ALLIANT ENERGY - WISCONSIN POWER & LIGHT CO"
}
```