Request a bill review

How these costs move together

Correlation of 12-month changes since January 2016, with the cost driver leading by up to nine months. 1.0 means the two always move together; the last column shows how the link has held up since 2023.

By Sam Strong, VP Business Development · Reviewed by Tara Dugger, COO · Data from FRED, BLS and EIA · Updated Nov 11, 2026

Correlation of 12-month changes
DriverCostStrongest linkTimingSame monthSince 2023
WTI crude oilBasic organic chemicals0.87one month later0.820.73
WTI crude oilPetrochemical manufacturing0.86one month later0.790.71
WTI crude oilChemicals and allied products0.84one month later0.790.61
WTI crude oilPlastic resins and materials0.76one month later0.730.59
WTI crude oilIron and steel0.69in the same month0.690.43
WTI crude oilGrains0.70one month later0.630.26
WTI crude oilFinal demand0.69one month later0.640.66
WTI crude oilCpi all items, seasonally adjusted0.607 months later0.480.13
WTI crude oilFood manufacturing (naics 311)0.634 months later0.45-0.21
WTI crude oilIndustrial electric power0.579 months later0.26-0.33
WTI crude oilHenry Hub gas0.492 months later0.43-0.07
Henry Hub gasIndustrial natural gas0.82one month later0.720.55
Henry Hub gasChemicals and allied products0.65in the same month0.650.41
Henry Hub gasBasic organic chemicals0.60in the same month0.600.35
Henry Hub gasFood manufacturing (naics 311)0.674 months later0.610.47
Henry Hub gasIndustrial electric power0.588 months later0.24-0.39
Henry Hub gasCpi all items, seasonally adjusted0.596 months later0.40-0.50
Chemicals and allied productsCpi all items, seasonally adjusted0.796 months later0.590.02

Find out what your bills should have cost.

Send one recent bill per site, or a list of accounts. We tell you where we expect findings before you sign anything. No upfront audit fee.