U.S. Energy Information Administration

Normal Butane

EIA petroleum sum snd data for Normal Butane.

Series

24

normalized EIA series

Observations

7,038

records in the database

Latest record

31 May 2026

newest observation

Cadences

2

annual, monthly

Series chart

Selected series performance

Latest

No value

No observation

Change

No prior value

No prior value

52W high

No value

No observation

52W low

No value

No observation

ATH

No value

No observation

ATL

No value

No observation

Series

Available petroleum series

U.S. Field Production of Normal Butane (Thousand Barrels per Day)eia-petroleum-petroleum-sum-snd-m-epllban-fpf-nus-mbbld-monthlyU.S.monthly757 MBBL/D31 May 2026 · 545 rows
U.S. Field Production of Normal Butane (Thousand Barrels)eia-petroleum-petroleum-sum-snd-m-epllban-fpf-nus-mbbl-monthlyU.S.monthly23,464 MBBL31 May 2026 · 545 rows
East Coast (PADD 1) Field Production of Normal Butane (Thousand Barrels per Day)eia-petroleum-petroleum-sum-snd-m-epllban-fpf-r10-mbbld-monthlyPADD 1monthly87 MBBL/D31 May 2026 · 545 rows
East Coast (PADD 1) Field Production of Normal Butane (Thousand Barrels)eia-petroleum-petroleum-sum-snd-m-epllban-fpf-r10-mbbl-monthlyPADD 1monthly2,688 MBBL31 May 2026 · 545 rows
Midwest (PADD 2) Field Production of Normal Butane (Thousand Barrels per Day)eia-petroleum-petroleum-sum-snd-m-epllban-fpf-r20-mbbld-monthlyPADD 2monthly157 MBBL/D31 May 2026 · 545 rows
Midwest (PADD 2) Field Production of Normal Butane (Thousand Barrels)eia-petroleum-petroleum-sum-snd-m-epllban-fpf-r20-mbbl-monthlyPADD 2monthly4,867 MBBL31 May 2026 · 545 rows
Gulf Coast (PADD 3) Field Production of Normal Butane (Thousand Barrels per Day)eia-petroleum-petroleum-sum-snd-m-epllban-fpf-r30-mbbld-monthlyPADD 3monthly418 MBBL/D31 May 2026 · 545 rows
Gulf Coast (PADD 3) Field Production of Normal Butane (Thousand Barrels)eia-petroleum-petroleum-sum-snd-m-epllban-fpf-r30-mbbl-monthlyPADD 3monthly12,970 MBBL31 May 2026 · 545 rows
Rocky Mountain (PADD 4) Field Production of Normal Butane (Thousand Barrels per Day)eia-petroleum-petroleum-sum-snd-m-epllban-fpf-r40-mbbld-monthlyPADD 4monthly79 MBBL/D31 May 2026 · 545 rows
Rocky Mountain (PADD 4) Field Production of Normal Butane (Thousand Barrels)eia-petroleum-petroleum-sum-snd-m-epllban-fpf-r40-mbbl-monthlyPADD 4monthly2,444 MBBL31 May 2026 · 545 rows
West Coast (PADD 5) Field Production of Normal Butane (Thousand Barrels per Day)eia-petroleum-petroleum-sum-snd-m-epllban-fpf-r50-mbbld-monthlyPADD 5monthly16 MBBL/D31 May 2026 · 545 rows
West Coast (PADD 5) Field Production of Normal Butane (Thousand Barrels)eia-petroleum-petroleum-sum-snd-m-epllban-fpf-r50-mbbl-monthlyPADD 5monthly495 MBBL31 May 2026 · 545 rows
U.S. Field Production of Normal Butane (Thousand Barrels)eia-petroleum-petroleum-sum-snd-m-epllban-fpf-nus-mbbl-annualU.S.annual259,738 MBBL31 Dec 2025 · 45 rows
U.S. Field Production of Normal Butane (Thousand Barrels per Day)eia-petroleum-petroleum-sum-snd-m-epllban-fpf-nus-mbbld-annualU.S.annual712 MBBL/D31 Dec 2025 · 43 rows
East Coast (PADD 1) Field Production of Normal Butane (Thousand Barrels)eia-petroleum-petroleum-sum-snd-m-epllban-fpf-r10-mbbl-annualPADD 1annual30,504 MBBL31 Dec 2025 · 45 rows
East Coast (PADD 1) Field Production of Normal Butane (Thousand Barrels per Day)eia-petroleum-petroleum-sum-snd-m-epllban-fpf-r10-mbbld-annualPADD 1annual84 MBBL/D31 Dec 2025 · 37 rows
Midwest (PADD 2) Field Production of Normal Butane (Thousand Barrels)eia-petroleum-petroleum-sum-snd-m-epllban-fpf-r20-mbbl-annualPADD 2annual56,191 MBBL31 Dec 2025 · 45 rows
Midwest (PADD 2) Field Production of Normal Butane (Thousand Barrels per Day)eia-petroleum-petroleum-sum-snd-m-epllban-fpf-r20-mbbld-annualPADD 2annual154 MBBL/D31 Dec 2025 · 37 rows
Gulf Coast (PADD 3) Field Production of Normal Butane (Thousand Barrels)eia-petroleum-petroleum-sum-snd-m-epllban-fpf-r30-mbbl-annualPADD 3annual138,611 MBBL31 Dec 2025 · 45 rows
Gulf Coast (PADD 3) Field Production of Normal Butane (Thousand Barrels per Day)eia-petroleum-petroleum-sum-snd-m-epllban-fpf-r30-mbbld-annualPADD 3annual380 MBBL/D31 Dec 2025 · 37 rows
Rocky Mountain (PADD 4) Field Production of Normal Butane (Thousand Barrels)eia-petroleum-petroleum-sum-snd-m-epllban-fpf-r40-mbbl-annualPADD 4annual28,128 MBBL31 Dec 2025 · 45 rows
Rocky Mountain (PADD 4) Field Production of Normal Butane (Thousand Barrels per Day)eia-petroleum-petroleum-sum-snd-m-epllban-fpf-r40-mbbld-annualPADD 4annual77 MBBL/D31 Dec 2025 · 37 rows
West Coast (PADD 5) Field Production of Normal Butane (Thousand Barrels)eia-petroleum-petroleum-sum-snd-m-epllban-fpf-r50-mbbl-annualPADD 5annual6,304 MBBL31 Dec 2025 · 45 rows
West Coast (PADD 5) Field Production of Normal Butane (Thousand Barrels per Day)eia-petroleum-petroleum-sum-snd-m-epllban-fpf-r50-mbbld-annualPADD 5annual17 MBBL/D31 Dec 2025 · 37 rows

Latest observations

Recent records

U.S. Field Production of Normal Butane (Thousand Barrels per Day)eia-petroleum-petroleum-sum-snd-m-epllban-fpf-nus-mbbld-monthlymonthly757 MBBL/D31 May 2026
U.S. Field Production of Normal Butane (Thousand Barrels)eia-petroleum-petroleum-sum-snd-m-epllban-fpf-nus-mbbl-monthlymonthly23,464 MBBL31 May 2026
East Coast (PADD 1) Field Production of Normal Butane (Thousand Barrels per Day)eia-petroleum-petroleum-sum-snd-m-epllban-fpf-r10-mbbld-monthlymonthly87 MBBL/D31 May 2026
East Coast (PADD 1) Field Production of Normal Butane (Thousand Barrels)eia-petroleum-petroleum-sum-snd-m-epllban-fpf-r10-mbbl-monthlymonthly2,688 MBBL31 May 2026
Midwest (PADD 2) Field Production of Normal Butane (Thousand Barrels per Day)eia-petroleum-petroleum-sum-snd-m-epllban-fpf-r20-mbbld-monthlymonthly157 MBBL/D31 May 2026
Midwest (PADD 2) Field Production of Normal Butane (Thousand Barrels)eia-petroleum-petroleum-sum-snd-m-epllban-fpf-r20-mbbl-monthlymonthly4,867 MBBL31 May 2026
Gulf Coast (PADD 3) Field Production of Normal Butane (Thousand Barrels per Day)eia-petroleum-petroleum-sum-snd-m-epllban-fpf-r30-mbbld-monthlymonthly418 MBBL/D31 May 2026
Gulf Coast (PADD 3) Field Production of Normal Butane (Thousand Barrels)eia-petroleum-petroleum-sum-snd-m-epllban-fpf-r30-mbbl-monthlymonthly12,970 MBBL31 May 2026
Rocky Mountain (PADD 4) Field Production of Normal Butane (Thousand Barrels per Day)eia-petroleum-petroleum-sum-snd-m-epllban-fpf-r40-mbbld-monthlymonthly79 MBBL/D31 May 2026
Rocky Mountain (PADD 4) Field Production of Normal Butane (Thousand Barrels)eia-petroleum-petroleum-sum-snd-m-epllban-fpf-r40-mbbl-monthlymonthly2,444 MBBL31 May 2026
West Coast (PADD 5) Field Production of Normal Butane (Thousand Barrels per Day)eia-petroleum-petroleum-sum-snd-m-epllban-fpf-r50-mbbld-monthlymonthly16 MBBL/D31 May 2026
West Coast (PADD 5) Field Production of Normal Butane (Thousand Barrels)eia-petroleum-petroleum-sum-snd-m-epllban-fpf-r50-mbbl-monthlymonthly495 MBBL31 May 2026
U.S. Field Production of Normal Butane (Thousand Barrels per Day)eia-petroleum-petroleum-sum-snd-m-epllban-fpf-nus-mbbld-monthlymonthly733 MBBL/D30 Apr 2026
U.S. Field Production of Normal Butane (Thousand Barrels)eia-petroleum-petroleum-sum-snd-m-epllban-fpf-nus-mbbl-monthlymonthly22,003 MBBL30 Apr 2026
East Coast (PADD 1) Field Production of Normal Butane (Thousand Barrels per Day)eia-petroleum-petroleum-sum-snd-m-epllban-fpf-r10-mbbld-monthlymonthly85 MBBL/D30 Apr 2026
East Coast (PADD 1) Field Production of Normal Butane (Thousand Barrels)eia-petroleum-petroleum-sum-snd-m-epllban-fpf-r10-mbbl-monthlymonthly2,550 MBBL30 Apr 2026
Midwest (PADD 2) Field Production of Normal Butane (Thousand Barrels per Day)eia-petroleum-petroleum-sum-snd-m-epllban-fpf-r20-mbbld-monthlymonthly149 MBBL/D30 Apr 2026
Midwest (PADD 2) Field Production of Normal Butane (Thousand Barrels)eia-petroleum-petroleum-sum-snd-m-epllban-fpf-r20-mbbl-monthlymonthly4,475 MBBL30 Apr 2026
Gulf Coast (PADD 3) Field Production of Normal Butane (Thousand Barrels per Day)eia-petroleum-petroleum-sum-snd-m-epllban-fpf-r30-mbbld-monthlymonthly404 MBBL/D30 Apr 2026
Gulf Coast (PADD 3) Field Production of Normal Butane (Thousand Barrels)eia-petroleum-petroleum-sum-snd-m-epllban-fpf-r30-mbbl-monthlymonthly12,134 MBBL30 Apr 2026
Rocky Mountain (PADD 4) Field Production of Normal Butane (Thousand Barrels per Day)eia-petroleum-petroleum-sum-snd-m-epllban-fpf-r40-mbbld-monthlymonthly78 MBBL/D30 Apr 2026
Rocky Mountain (PADD 4) Field Production of Normal Butane (Thousand Barrels)eia-petroleum-petroleum-sum-snd-m-epllban-fpf-r40-mbbl-monthlymonthly2,342 MBBL30 Apr 2026
West Coast (PADD 5) Field Production of Normal Butane (Thousand Barrels per Day)eia-petroleum-petroleum-sum-snd-m-epllban-fpf-r50-mbbld-monthlymonthly17 MBBL/D30 Apr 2026
West Coast (PADD 5) Field Production of Normal Butane (Thousand Barrels)eia-petroleum-petroleum-sum-snd-m-epllban-fpf-r50-mbbl-monthlymonthly502 MBBL30 Apr 2026
U.S. Field Production of Normal Butane (Thousand Barrels per Day)eia-petroleum-petroleum-sum-snd-m-epllban-fpf-nus-mbbld-monthlymonthly737 MBBL/D31 Mar 2026
U.S. Field Production of Normal Butane (Thousand Barrels)eia-petroleum-petroleum-sum-snd-m-epllban-fpf-nus-mbbl-monthlymonthly22,834 MBBL31 Mar 2026
East Coast (PADD 1) Field Production of Normal Butane (Thousand Barrels per Day)eia-petroleum-petroleum-sum-snd-m-epllban-fpf-r10-mbbld-monthlymonthly86 MBBL/D31 Mar 2026
East Coast (PADD 1) Field Production of Normal Butane (Thousand Barrels)eia-petroleum-petroleum-sum-snd-m-epllban-fpf-r10-mbbl-monthlymonthly2,667 MBBL31 Mar 2026
Midwest (PADD 2) Field Production of Normal Butane (Thousand Barrels per Day)eia-petroleum-petroleum-sum-snd-m-epllban-fpf-r20-mbbld-monthlymonthly147 MBBL/D31 Mar 2026
Midwest (PADD 2) Field Production of Normal Butane (Thousand Barrels)eia-petroleum-petroleum-sum-snd-m-epllban-fpf-r20-mbbl-monthlymonthly4,572 MBBL31 Mar 2026
Gulf Coast (PADD 3) Field Production of Normal Butane (Thousand Barrels per Day)eia-petroleum-petroleum-sum-snd-m-epllban-fpf-r30-mbbld-monthlymonthly406 MBBL/D31 Mar 2026
Gulf Coast (PADD 3) Field Production of Normal Butane (Thousand Barrels)eia-petroleum-petroleum-sum-snd-m-epllban-fpf-r30-mbbl-monthlymonthly12,582 MBBL31 Mar 2026
Rocky Mountain (PADD 4) Field Production of Normal Butane (Thousand Barrels per Day)eia-petroleum-petroleum-sum-snd-m-epllban-fpf-r40-mbbld-monthlymonthly80 MBBL/D31 Mar 2026
Rocky Mountain (PADD 4) Field Production of Normal Butane (Thousand Barrels)eia-petroleum-petroleum-sum-snd-m-epllban-fpf-r40-mbbl-monthlymonthly2,483 MBBL31 Mar 2026
West Coast (PADD 5) Field Production of Normal Butane (Thousand Barrels per Day)eia-petroleum-petroleum-sum-snd-m-epllban-fpf-r50-mbbld-monthlymonthly17 MBBL/D31 Mar 2026
West Coast (PADD 5) Field Production of Normal Butane (Thousand Barrels)eia-petroleum-petroleum-sum-snd-m-epllban-fpf-r50-mbbl-monthlymonthly530 MBBL31 Mar 2026
U.S. Field Production of Normal Butane (Thousand Barrels per Day)eia-petroleum-petroleum-sum-snd-m-epllban-fpf-nus-mbbld-monthlymonthly725 MBBL/D28 Feb 2026
U.S. Field Production of Normal Butane (Thousand Barrels)eia-petroleum-petroleum-sum-snd-m-epllban-fpf-nus-mbbl-monthlymonthly20,298 MBBL28 Feb 2026
East Coast (PADD 1) Field Production of Normal Butane (Thousand Barrels per Day)eia-petroleum-petroleum-sum-snd-m-epllban-fpf-r10-mbbld-monthlymonthly84 MBBL/D28 Feb 2026
East Coast (PADD 1) Field Production of Normal Butane (Thousand Barrels)eia-petroleum-petroleum-sum-snd-m-epllban-fpf-r10-mbbl-monthlymonthly2,346 MBBL28 Feb 2026
Midwest (PADD 2) Field Production of Normal Butane (Thousand Barrels per Day)eia-petroleum-petroleum-sum-snd-m-epllban-fpf-r20-mbbld-monthlymonthly150 MBBL/D28 Feb 2026
Midwest (PADD 2) Field Production of Normal Butane (Thousand Barrels)eia-petroleum-petroleum-sum-snd-m-epllban-fpf-r20-mbbl-monthlymonthly4,195 MBBL28 Feb 2026
Gulf Coast (PADD 3) Field Production of Normal Butane (Thousand Barrels per Day)eia-petroleum-petroleum-sum-snd-m-epllban-fpf-r30-mbbld-monthlymonthly393 MBBL/D28 Feb 2026
Gulf Coast (PADD 3) Field Production of Normal Butane (Thousand Barrels)eia-petroleum-petroleum-sum-snd-m-epllban-fpf-r30-mbbl-monthlymonthly11,014 MBBL28 Feb 2026
Rocky Mountain (PADD 4) Field Production of Normal Butane (Thousand Barrels per Day)eia-petroleum-petroleum-sum-snd-m-epllban-fpf-r40-mbbld-monthlymonthly81 MBBL/D28 Feb 2026
Rocky Mountain (PADD 4) Field Production of Normal Butane (Thousand Barrels)eia-petroleum-petroleum-sum-snd-m-epllban-fpf-r40-mbbl-monthlymonthly2,256 MBBL28 Feb 2026
West Coast (PADD 5) Field Production of Normal Butane (Thousand Barrels per Day)eia-petroleum-petroleum-sum-snd-m-epllban-fpf-r50-mbbld-monthlymonthly17 MBBL/D28 Feb 2026
West Coast (PADD 5) Field Production of Normal Butane (Thousand Barrels)eia-petroleum-petroleum-sum-snd-m-epllban-fpf-r50-mbbl-monthlymonthly487 MBBL28 Feb 2026
U.S. Field Production of Normal Butane (Thousand Barrels per Day)eia-petroleum-petroleum-sum-snd-m-epllban-fpf-nus-mbbld-monthlymonthly690 MBBL/D31 Jan 2026
U.S. Field Production of Normal Butane (Thousand Barrels)eia-petroleum-petroleum-sum-snd-m-epllban-fpf-nus-mbbl-monthlymonthly21,405 MBBL31 Jan 2026
East Coast (PADD 1) Field Production of Normal Butane (Thousand Barrels per Day)eia-petroleum-petroleum-sum-snd-m-epllban-fpf-r10-mbbld-monthlymonthly82 MBBL/D31 Jan 2026
East Coast (PADD 1) Field Production of Normal Butane (Thousand Barrels)eia-petroleum-petroleum-sum-snd-m-epllban-fpf-r10-mbbl-monthlymonthly2,541 MBBL31 Jan 2026
Midwest (PADD 2) Field Production of Normal Butane (Thousand Barrels per Day)eia-petroleum-petroleum-sum-snd-m-epllban-fpf-r20-mbbld-monthlymonthly148 MBBL/D31 Jan 2026
Midwest (PADD 2) Field Production of Normal Butane (Thousand Barrels)eia-petroleum-petroleum-sum-snd-m-epllban-fpf-r20-mbbl-monthlymonthly4,593 MBBL31 Jan 2026
Gulf Coast (PADD 3) Field Production of Normal Butane (Thousand Barrels per Day)eia-petroleum-petroleum-sum-snd-m-epllban-fpf-r30-mbbld-monthlymonthly365 MBBL/D31 Jan 2026
Gulf Coast (PADD 3) Field Production of Normal Butane (Thousand Barrels)eia-petroleum-petroleum-sum-snd-m-epllban-fpf-r30-mbbl-monthlymonthly11,301 MBBL31 Jan 2026
Rocky Mountain (PADD 4) Field Production of Normal Butane (Thousand Barrels per Day)eia-petroleum-petroleum-sum-snd-m-epllban-fpf-r40-mbbld-monthlymonthly78 MBBL/D31 Jan 2026
Rocky Mountain (PADD 4) Field Production of Normal Butane (Thousand Barrels)eia-petroleum-petroleum-sum-snd-m-epllban-fpf-r40-mbbl-monthlymonthly2,424 MBBL31 Jan 2026
West Coast (PADD 5) Field Production of Normal Butane (Thousand Barrels per Day)eia-petroleum-petroleum-sum-snd-m-epllban-fpf-r50-mbbld-monthlymonthly18 MBBL/D31 Jan 2026
West Coast (PADD 5) Field Production of Normal Butane (Thousand Barrels)eia-petroleum-petroleum-sum-snd-m-epllban-fpf-r50-mbbl-monthlymonthly546 MBBL31 Jan 2026
U.S. Field Production of Normal Butane (Thousand Barrels)eia-petroleum-petroleum-sum-snd-m-epllban-fpf-nus-mbbl-annualannual259,738 MBBL31 Dec 2025
U.S. Field Production of Normal Butane (Thousand Barrels per Day)eia-petroleum-petroleum-sum-snd-m-epllban-fpf-nus-mbbld-annualannual712 MBBL/D31 Dec 2025
U.S. Field Production of Normal Butane (Thousand Barrels per Day)eia-petroleum-petroleum-sum-snd-m-epllban-fpf-nus-mbbld-monthlymonthly740 MBBL/D31 Dec 2025
U.S. Field Production of Normal Butane (Thousand Barrels)eia-petroleum-petroleum-sum-snd-m-epllban-fpf-nus-mbbl-monthlymonthly22,948 MBBL31 Dec 2025
East Coast (PADD 1) Field Production of Normal Butane (Thousand Barrels)eia-petroleum-petroleum-sum-snd-m-epllban-fpf-r10-mbbl-annualannual30,504 MBBL31 Dec 2025
East Coast (PADD 1) Field Production of Normal Butane (Thousand Barrels per Day)eia-petroleum-petroleum-sum-snd-m-epllban-fpf-r10-mbbld-annualannual84 MBBL/D31 Dec 2025
East Coast (PADD 1) Field Production of Normal Butane (Thousand Barrels per Day)eia-petroleum-petroleum-sum-snd-m-epllban-fpf-r10-mbbld-monthlymonthly83 MBBL/D31 Dec 2025
East Coast (PADD 1) Field Production of Normal Butane (Thousand Barrels)eia-petroleum-petroleum-sum-snd-m-epllban-fpf-r10-mbbl-monthlymonthly2,582 MBBL31 Dec 2025
Midwest (PADD 2) Field Production of Normal Butane (Thousand Barrels)eia-petroleum-petroleum-sum-snd-m-epllban-fpf-r20-mbbl-annualannual56,191 MBBL31 Dec 2025
Midwest (PADD 2) Field Production of Normal Butane (Thousand Barrels per Day)eia-petroleum-petroleum-sum-snd-m-epllban-fpf-r20-mbbld-annualannual154 MBBL/D31 Dec 2025
Midwest (PADD 2) Field Production of Normal Butane (Thousand Barrels per Day)eia-petroleum-petroleum-sum-snd-m-epllban-fpf-r20-mbbld-monthlymonthly154 MBBL/D31 Dec 2025
Midwest (PADD 2) Field Production of Normal Butane (Thousand Barrels)eia-petroleum-petroleum-sum-snd-m-epllban-fpf-r20-mbbl-monthlymonthly4,766 MBBL31 Dec 2025
Gulf Coast (PADD 3) Field Production of Normal Butane (Thousand Barrels)eia-petroleum-petroleum-sum-snd-m-epllban-fpf-r30-mbbl-annualannual138,611 MBBL31 Dec 2025
Gulf Coast (PADD 3) Field Production of Normal Butane (Thousand Barrels per Day)eia-petroleum-petroleum-sum-snd-m-epllban-fpf-r30-mbbld-annualannual380 MBBL/D31 Dec 2025
Gulf Coast (PADD 3) Field Production of Normal Butane (Thousand Barrels per Day)eia-petroleum-petroleum-sum-snd-m-epllban-fpf-r30-mbbld-monthlymonthly404 MBBL/D31 Dec 2025
Gulf Coast (PADD 3) Field Production of Normal Butane (Thousand Barrels)eia-petroleum-petroleum-sum-snd-m-epllban-fpf-r30-mbbl-monthlymonthly12,530 MBBL31 Dec 2025
Rocky Mountain (PADD 4) Field Production of Normal Butane (Thousand Barrels)eia-petroleum-petroleum-sum-snd-m-epllban-fpf-r40-mbbl-annualannual28,128 MBBL31 Dec 2025
Rocky Mountain (PADD 4) Field Production of Normal Butane (Thousand Barrels per Day)eia-petroleum-petroleum-sum-snd-m-epllban-fpf-r40-mbbld-annualannual77 MBBL/D31 Dec 2025
Rocky Mountain (PADD 4) Field Production of Normal Butane (Thousand Barrels per Day)eia-petroleum-petroleum-sum-snd-m-epllban-fpf-r40-mbbld-monthlymonthly81 MBBL/D31 Dec 2025
Rocky Mountain (PADD 4) Field Production of Normal Butane (Thousand Barrels)eia-petroleum-petroleum-sum-snd-m-epllban-fpf-r40-mbbl-monthlymonthly2,525 MBBL31 Dec 2025

Sources and methodology

Source: U.S. Energy Information Administration (EIA) Open Data. Petroleum series include the cadence, product group, process, and geography published by EIA. World Price Index normalizes source data for charting and API access and does not imply EIA endorsement.