---
schema_version: "secwatch.filing_event.v1"
accession: "0001004155-26-000016"
form_type: "8-K"
ticker: null
cik: "0001004155"
company_name: "SOUTHERN CO GAS"
filed_at: "2026-09-08T14:16:08+00:00"
generated_at: "2026-09-08T14:17:17.902985+00:00"
event_type: "regulatory"
sentiment: "positive"
materiality_score: 0.6
calibrated_materiality_score: 0.6
confidence: "high"
source: SEC EDGAR
---

# Nicor Gas settles 2026 rate case; $82M revenue increase pending approval

## Summary
- Stipulation signed Sept 8, 2026 with Illinois regulators and parties, subject to Illinois Commission approval.
- Annual base rate revenues to increase ~$82M, with target effective date of Nov 16, 2026.
- Settlement provides return on equity of 9.48% and equity ratio of 50.00%.
- Nicor Gas to move to dismiss appeal of Nov 19, 2025 rate case decision if final order approved.
- Illinois Commission expected to rule by Dec 7, 2026; terms may differ from stipulation.

## SEC filing metadata
- accession: 0001004155-26-000016
- form_type: 8-K
- cik: 0001004155
- company_name: SOUTHERN CO GAS
- filed_at: 2026-09-08T14:16:08+00:00
- event_type: regulatory
- sentiment: positive
- materiality_score: 0.6
- calibrated_materiality_score: 0.6
- confidence: high
- sec_items: 8.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1004155/000100415526000016/0001004155-26-000016-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1004155/000100415526000016/so-20260908.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001004155-26-000016
- JSON: https://secwatch.observer/filing/0001004155-26-000016.json
- Plain text: https://secwatch.observer/filing/0001004155-26-000016.txt

This AI-assisted summary is a reading aid. Review the linked SEC EDGAR filing before relying on any specific claim.