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OH Ohio 34
BOSC BOSC Lima Ottawa River · Lima, OH Draft Under construction #1261 URB Urbana Mad River · Great Miami Open Investigating #1263 DEF Defiance Maumee mainstem Queued Investigating #1264 FIN Findlay Blanchard River Queued Investigating #1265 TOL Toledo Lucas Co WRRF Queued Investigating #1266 VWT Van Wert Town Creek · Little Auglaize Queued Investigating #1267 BRY Bryan Prairie Creek · Tiffin River Queued Investigating #1268 OTW Ottawa Blanchard River (lower) Queued Investigating #1269 SPR Springfield Mad River · Great Miami Queued Investigating #1270 XEN Xenia Little Miami Queued Investigating #1271 WPA Dayton · WPAFB Mad River · Great Miami Queued Investigating #1272 HAM Hamilton · Middletown Great Miami (lower) Queued Investigating #1273 TRP Troy · Piqua Great Miami (upper) Queued Investigating #1274 SID Sidney Great Miami · headwaters Queued Investigating #1275 GRV Greenville · Darke Co Stillwater · basin divide Queued Investigating #1276 WIL Wilmington Todd Fork · Little Miami Queued Investigating #1277 WUN West Union · Adams Co Ohio Brush Creek · Ohio River Queued Investigating #1278 NAL New Albany · Licking Scioto ↔ Muskingum divide Watching Investigating #1279 COL Columbus Scioto · Olentangy Watching Investigating #1280 CSH Coshocton Tuscarawas + Walhonding Watching Investigating #1281 PIK Piketon Scioto River · PORTS Watching Investigating #1282 SAN Sandusky · Perkins Twp Sandusky Bay · Lake Erie Watching Investigating #1283 NWK Newark Licking River Watching Investigating #1284 ZAN Zanesville Muskingum mainstem Watching Investigating #1285 FRE Fremont · Clyde Lower Sandusky Watching Investigating #1286 TIF Tiffin Sandusky (mid) Watching Investigating #1287 BUC Bucyrus Sandusky headwaters Watching Investigating #1288 CLE Cleveland Lower Cuyahoga Watching Investigating #1289 AKR Akron Upper Cuyahoga · CVNP Watching Investigating #1290 LRD Lordstown · Warren Upper Mahoning Watching Investigating #1291 YNG Youngstown Mahoning mainstem Watching Investigating #1292 LAN Lancaster Upper Hocking Watching Investigating #1293 ATH Athens Lower Hocking Watching Investigating #1294 LOG Logan Hocking Hills Watching Investigating #1295
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Building
Chapter 3 of 6 · the story

How big is it — and what won't they tell you?

Most of this project is described in documents the developer wrote, and most of those are vague about scale. The air permit is different: to set federally enforceable pollution limits, Ohio EPA had to count the plant’s equipment, unit by unit. Read it for the shape it’s forced to disclose — and notice where it stops.

Record Teardown

Air Permit-to-Install P0138965

Ohio EPA · Division of Air Pollution Control · FINAL, issued 2026-05-28
● in the published bundle
Issued permit · text-native
① The source · annotated

Bytes not pulled locally (Git-LFS pointer) — available on request.

Download · Open in a new tab

REDACTED · CBI
1
2
3
issued PTI + 64-item Response to Comments · Ohio EPA · Air permits (eDoc 4132514)
The 66-page issued eDocument is committed as provenance; engine make/model/size is redacted in the source itself as trade secret.
② What we read
1
Synthetic-minor caps, printed in the permit
NOx 235.62 · CO 96.06 tpy
2
Three matched groups → three data halls
114 gensets · 36 towers
3
Per-engine power withheld as trade secret
ekW = REDACTED
③ What it reveals

The permit fixes the plant's shape exactly — three matched groups of generators and cooling towers, 114 data-hall gensets — yet locks the one number that sets its true scale, per-engine power, as a trade secret. The ~313 MW everyone cites is the draft public-notice figure; the issued permit will not confirm it.

④ How to check it
[open]per-engine ekW · trade secret
ekW · REDACTED · CBI Why won't the permit say how big it is?
the lock

Engine make / model / size — and so the per-engine ekW that sets the plant's true electrical scale — is claimed as a trade secret and withheld from the issued permit.

The permit fixes the plant's shape exactly — 114 data-hall gensets and 36 cooling towers in three matched groups — yet locks the one number that would let you compute its real backup capacity. The ~313 MW everyone cites is the draft public-notice figure; the issued permit will not confirm it. The scale is set; the proof is withheld.

The structure is unambiguous: three matched groups of generators and cooling towers — three data halls. The pollution caps are printed in black and white. But the single number that would convert “114 generators” into megawatts — the per-engine nameplate power — is withheld as a trade secret, so the widely-quoted ~313 MW traces only to the draft public notice, not the issued permit. Knowing which is which is the skill.

What you can read anywhere now

A synthetic-minor permit caps emissions just under the threshold that would trigger major-source review — so the caps tell you the operator’s own ceiling. Repeated equipment groups reveal layout the plans won’t. And a CBI / trade-secret redaction is not a dead end: it marks exactly which fact someone paid to keep out of the record.

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