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Nicor Gas

Northern Illinois Gas Company

IL · gas

Current parent
The Southern Company

SO

Open cases
1
Updated
Jul 21, 2026

Current economics

Rate base
Not available

authorized · Jul 21, 2026

Source ↗
Authorized ROE
Not available

authorized · Jul 21, 2026

Source ↗
Authorized common-equity ratio
Not available

authorized · Jul 21, 2026

Source ↗

Oversight and service

ILIllinois Commerce Commissiongas

Proceedings

View all utility cases →

Regulatory history

Effective dateProceedingROECommon equityRate base
CurrentCurrent natural-gas profile

Natural gas · Latest supported values

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Authorized · Jul 21, 2026

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Authorized · Jul 21, 2026

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Authorized · Jul 21, 2026

View full observation log (3)
MetricDateStageValueScope
Common equity ratioJul 21, 2026authorized—Illinois gas retail jurisdiction
Rate baseJul 21, 2026authorized—Illinois gas retail jurisdiction
Return on equityJul 21, 2026authorized—Illinois gas retail jurisdiction