Changelog

2026-10-22 · v2026.10.22

• Rail freight now from the Surface Transportation Board waybill summary (verified, 2010-2024 history); unconfirmed BTS figure dropped.
• Added steel: Nucor hot-rolled coil posted price ($/short ton), with week-over-week change.
• Added EU ETS: EEX primary auction clearing price (€/tCO2), with week-over-week change.
• PJM West wholesale power shown as a 7-day average (week-over-week based on it), latest day shown separately, with a volatility note.
• New Watt-Ton basket: a fixed-quantity basket priced at the latest sourced prices, formula on the methodology page.
• Downloadable history CSVs per series under /history/ (copper and aluminum monthly from 1960); gaps left blank.
• Methodology: stated that no figure is extrapolated, interpolated, estimated or forecast.
• Added this changelog.
• Contact and sponsorship address changed to contact@wattsandtons.com.
• Added @WattsandTons on X to the footer.

2026-10-21 · v1

• First release: index, methodology, data and about pages, converter, cookie-free email signup.