---
schema_version: "secwatch.filing_event.v1"
accession: "0000352541-26-000042"
form_type: "8-K"
ticker: "LNT"
cik: "0000352541"
company_name: "ALLIANT ENERGY CORP"
filed_at: "2026-07-30T22:02:45+00:00"
generated_at: "2026-07-31T10:05:51.506621+00:00"
event_type: "earnings"
sentiment: "neutral"
materiality_score: 0.65
calibrated_materiality_score: 0.65
confidence: "high"
source: SEC EDGAR
---

# Alliant Energy Q2 GAAP EPS $0.65 vs $0.68; reaffirms 2026 guidance $3.36-$3.46

## Summary
- Q2 2026 GAAP EPS $0.65, down from $0.68 in Q2 2025; non-GAAP EPS also $0.65.
- Reaffirms 2026 ongoing EPS guidance $3.36-$3.46; currently trending in upper half of range.
- Expects 60% load growth by 2031; three data centers making significant construction progress.
- Primary drivers: higher revenue requirements from rate base investments, offset by higher O&M and financing costs.
- Consolidated effective tax rate guidance of (35%) for 2026.

## SEC filing metadata
- accession: 0000352541-26-000042
- form_type: 8-K
- ticker: LNT
- cik: 0000352541
- company_name: ALLIANT ENERGY CORP
- filed_at: 2026-07-30T22:02:45+00:00
- event_type: earnings
- sentiment: neutral
- materiality_score: 0.65
- calibrated_materiality_score: 0.65
- confidence: high
- sec_items: 2.02, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/352541/000035254126000042/0000352541-26-000042-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/52485/000035254126000042/lnt-20260730.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0000352541-26-000042
- JSON: https://secwatch.observer/filing/0000352541-26-000042.json
- Plain text: https://secwatch.observer/filing/0000352541-26-000042.txt

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