Annual report summary

GD, GTG programs reported

Operating in IA, IL
2024
Total regulated miles
4k
across reported programs
Service connections
217k
latest reported total
LNG facilities (if any)
—
facilities reported
Program Miles Services State Year
Gas Distribution 4k 217k IA 2024
Gas Transmission & Gathering 1 — IL 2024

Miles by installation service by decade.

Gas Distribution
1k mi peak 4k total
Pre-1940
35
1940–1949
4
1950–1959
147
1960–1969
869
1970–1979
372
1980–1989
313
1990–1999
1k
2000–2009
665
2010–2019
491
2020–2029
209
Unknown
313
Gas Transmission & Gathering
28 mi peak 52 total
Pre-1940
0
1940–1949
0
1950–1959
0
1960–1969
28
1970–1979
0
1980–1989
0
1990–1999
24
2000–2009
0
2010–2019
0
2020–2029
0
Unknown
0
Reference
Operator name ALLIANT ENERGY INTERSTATE POWER AND LIGHT COMPANY
Primary ID 8170
Programs GD, GTG
Contact details
Preparer name J***e O*****n
Preparer title Lead Gas Engineer
Preparer phone (608) 516-0510
Preparer email j*********n@a***********y.c*m
Preparer fax (000) 000-0000
Preparer address —
Report submission type INITIAL
Report date 2025-03-12T00:00:00
Filing date 2025-03-12T00:00:00
Additional information —
Form revision 7100.1-1 (Rev. 06-2023)
Company official name —
Company official title —
Company official phone —
Company official email —
Company official fax —
Emergency contact name —
Emergency contact phone —
Emergency contact email —
Section 6 — Flattened data preview
Key Value
annuals.gd.miles 4439.74
annuals.gd.report_year 2024
annuals.gd.services 217373.0
annuals.gd.source_count 1
annuals.gd.state IA
annuals.gd.year 2024
annuals.gtg.miles 1.4
annuals.gtg.report_year 2024
annuals.gtg.source_count 1
annuals.gtg.state IL
annuals.gtg.year 2024
annuals.raw.gd.COMMODITY Natural Gas
annuals.raw.gd.DATAFILE_AS_OF 12/1/2025
annuals.raw.gd.OFFICE_ADDRESS_STATE WI
annuals.raw.gd.OPERATOR_ID 8170.0
annuals.raw.gd.OPERATOR_NAME ALLIANT ENERGY - INTERSTATE POWER AND LIGHT COMPANY
annuals.raw.gd.OPERATOR_TYPE Investor Owned
annuals.raw.gd.REPORT_NUMBER 20250983.0
annuals.raw.gd.REPORT_YEAR 2024.0
annuals.raw.gd.SUPPLEMENTAL_NUMBER 71982.0
annuals.raw.gd.created_at 2025-12-05 14:43:51.824096
annuals.raw.gd.report_data.AVERAGE_LENGTH 88.14
annuals.raw.gd.report_data.FED_LAND_LEAKS_REPAIRED 0.0
annuals.raw.gd.report_data.FILING_DATE 2025-03-12T00:00:00
annuals.raw.gd.report_data.FORM_REV 7100.1-1 (Rev. 06-2023)

1532 additional key/value pairs available.

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