Manufacturing News
August 12, 2026
August 12, 2026 · Statewide · Story 2 of 5
AES Indiana Rate Case: The Zay Lawsuit and the September 8 Deadline
We've been tracking the AES Indiana rate fight for 30 days. This week brought a filing that raises the stakes considerably.
Former IURC Commissioner Andy Zay filed suit in Marion Superior Court Monday, alleging Governor Braun's office attempted to influence the active AES rate case and unlawfully removed him from the commission. Representative Carey Hamilton put the operator-relevant exposure plainly: if courts find that Braun's office engaged in prohibited ex parte communications during an active rate case, AES could use that procedural taint to challenge any adverse rehearing ruling, potentially locking the current $71 million rate increase in place while litigation drags past the January 2027 Phase 2 implementation date. AES has already committed not to file another base rate case until 2030.
September 8 is the IURC rehearing deadline and the hinge point for this entire situation. Commissioner Ziegner is now the sole pre-Braun appointee remaining on a board that has turned over almost entirely in eight months. Duke Energy Indiana's three-year rate plan filing is mandated for December 2026 under HEA 1002, meaning this same commission will also shape that case. If your cost model doesn't account for the possibility that Central Indiana's rate environment is effectively locked through 2030, September 8 belongs on your calendar now.
For your morning huddle
- Q
How could the Andy Zay lawsuit against Governor Braun affect AES Indiana's $71M rate increase?
If courts find that Braun's office engaged in prohibited ex parte communications during the active AES rate case, AES could use that procedural taint to challenge any adverse ruling at the September 8 IURC rehearing, potentially locking the current $71 million rate increase in place through 2030, when AES has already committed not to file another base rate case. Central Indiana operators should model their electricity costs against that scenario before the September 8 deadline closes.
From the brief, August 12, 2026
- SK hynix West Lafayette: Groundbreaking August 27, But the Supplier Window Is Open Now, Not Then
- AES Indiana Rate Case: The Zay Lawsuit and the September 8 Deadline
- NIPSCO Derecho: What a 60% Territory Outage Actually Costs Industrial Operators
- Willoughby Industries: $10M Zionsville Expansion, 100 Jobs at $34/Hour Average
- Indiana Biopharma: $100B Sector, $192M VC Gap, Mid-2027 Supplier Window
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Related
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- AES Indiana Rate Deadline September 5: What Indiana Manufacturers Need to Model Before the IURC Vote
- IURC Loses a Second Commissioner as the AES Indiana Utility Rate Case Heads to Rehearing
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