The supply-side ledger.

Capacity Ledger runs on a living database of every announced closure, curtailment, expansion, and force majeure in US specialty chemicals. The build is boring on purpose:

1. Scrape the primary record rather than the recap: 8-K filings, earnings-call transcripts, state WARN notices, and air-permit dockets.
2. Classify each event by type, site, and the product lines it touches.
3. Pull how much of that product the US already imports, using USITC trade data.
4. Check who the surviving producers are and how much headroom their utilization leaves.
5. Translate the whole thing into a plain read on what the buyer of that product should expect.

The second half is feedstock. We run margin dashboards on the ethane, propane, benzene, and chlor-alkali chains from EIA and FRED data, because a curtailment is almost always a margin story you could have read in the spread months earlier.

Who reads it

Product and market managers, sourcing and procurement leads, distributor sales desks, and chem-sector investors. You already know what nameplate capacity, a turnaround, and a force majeure letter are, so we will not explain them.

What we are not

A price-assessment service. The proprietary layer (ICIS, OPIS) costs five figures a seat and stays proprietary. What we build is the capacity math, the trade-flow math, and the feedstock spread, in one place, at newsletter prices: the read that tells you which way a price is leaning before an assessment confirms it moved.

Subscribe here, or read the free launch brief first: Why We Started Counting Closures.