Index lookup · WPU05130101
Producer Price Index for unprepared bituminous coal and lignite sold to utilities.
Latest value is 1 month old. Next update expected around Sep 2026.
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Enter a base value, a current value, and a contract amount to see the adjustment.
Strongest average month-over-month move historically: May (-3.7% avg).
Covers coal sold to utilities for power generation, relevant to a legacy power-purchase or industrial-boiler fuel contract still indexed to coal.
A starting point citing this series by name and code. Replace the bracketed terms with your contract's actual scope before use.
The [affected portion] of the Contract Price shall be adjusted using US PPI — Unprepared Bituminous Coal and Lignite (Utility Sold) (BLS series WPU05130101), published by BLS. Base Period: the index value published for August 2026 (or the month of contract signing, if different) is the Base Value. Adjustment: at each Adjustment Date, the Current Value is the most recently published three-month average of the index (the Averaging Window). The Escalation Factor equals Current Value divided by Base Value. Cap: the Escalation Factor applied under this clause shall not exceed 1.10 or fall below 0.90 (a 10% cap and floor) in any single Adjustment Date, regardless of the index's actual movement. [Replace bracketed terms with your contract's actual affected-portion definition and adjustment-date schedule before use. This is a drafting starting point, not legal advice.]
Want this in a spreadsheet instead? Use =ESCALAKE("wpu05130101") in Google Sheets →
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Split the contract by asset type: solar, wind, transmission, substations, or water. Transformers (PCU335311335311) and switchgear (PCU335313335313) have real, live BLS price indices. Solar, wind, and power line construction do not, so those need a weighted input composite instead.
Read more →Escalake tracks US PPI — Unprepared Bituminous Coal and Lignite (Utility Sold), applies your formula, and gives both sides a number they can confirm, no spreadsheet required.
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