U.S. Energy Information Administration

Petroleum Coke

EIA petroleum sum snd data for Petroleum Coke.

Series

normalized EIA series

Observations

7,038

records in the database

Latest record

31 May 2026

newest observation

Cadences

annual, monthly

API endpoint

/v1/commodities/eia-petroleum-petroleum-coke-6d104b9f97/series

Discover EIA petroleum series for this product before fetching observations with /v1/commodity-series/{series_slug}.

Series chart

Selected series performance

Series

Latest

No value

No observation

Change

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

East Coast (PADD 1) Refinery and Blender Net Production of Petroleum Coke (Thousand Barrels)eia-petroleum-petroleum-sum-snd-mckrpp11-monthlyPADD 1monthly658 MBBL31 May 2026 · 545 rows

East Coast (PADD 1) Refinery and Blender Net Production of Petroleum Coke (Thousand Barrels per Day)eia-petroleum-petroleum-sum-snd-mckrpp12-monthlyPADD 1monthly21 MBBL/D31 May 2026 · 545 rows

Midwest (PADD 2) Refinery and Blender Net Production of Petroleum Coke (Thousand Barrels)eia-petroleum-petroleum-sum-snd-mckrpp21-monthlyPADD 2monthly5,760 MBBL31 May 2026 · 545 rows

Midwest (PADD 2) Refinery and Blender Net Production of Petroleum Coke (Thousand Barrels per Day)eia-petroleum-petroleum-sum-snd-mckrpp22-monthlyPADD 2monthly186 MBBL/D31 May 2026 · 545 rows

Gulf Coast (PADD 3) Refinery and Blender Net Production of Petroleum Coke (Thousand Barrels)eia-petroleum-petroleum-sum-snd-mckrpp31-monthlyPADD 3monthly14,668 MBBL31 May 2026 · 545 rows

Gulf Coast (PADD 3) Refinery and Blender Net Production of Petroleum Coke (Thousand Barrels per Day)eia-petroleum-petroleum-sum-snd-mckrpp32-monthlyPADD 3monthly473 MBBL/D31 May 2026 · 545 rows

Rocky Mountain (PADD 4) Refinery and Blender Net Production of Petroleum Coke (Thousand Barrels)eia-petroleum-petroleum-sum-snd-mckrpp41-monthlyPADD 4monthly575 MBBL31 May 2026 · 545 rows

Rocky Mountain (PADD 4) Refinery and Blender Net Production of Petroleum Coke (Thousand Barrels per Day)eia-petroleum-petroleum-sum-snd-mckrpp42-monthlyPADD 4monthly19 MBBL/D31 May 2026 · 545 rows

West Coast (PADD 5) Refinery and Blender Net Production of Petroleum Coke (Thousand Barrels)eia-petroleum-petroleum-sum-snd-mckrpp51-monthlyPADD 5monthly3,048 MBBL31 May 2026 · 545 rows

West Coast (PADD 5) Refinery and Blender Net Production of Petroleum Coke (Thousand Barrels per Day)eia-petroleum-petroleum-sum-snd-mckrpp52-monthlyPADD 5monthly98 MBBL/D31 May 2026 · 545 rows

U.S. Refinery and Blender Net Production of Petroleum Coke (Thousand Barrels)eia-petroleum-petroleum-sum-snd-mckrpus1-monthlyU.S.monthly24,709 MBBL31 May 2026 · 545 rows

U.S. Refinery and Blender Net Production of Petroleum Coke (Thousand Barrels per Day)eia-petroleum-petroleum-sum-snd-mckrpus2-monthlyU.S.monthly797 MBBL/D31 May 2026 · 545 rows

East Coast (PADD 1) Refinery and Blender Net Production of Petroleum Coke (Thousand Barrels)eia-petroleum-petroleum-sum-snd-mckrpp11-annualPADD 1annual7,857 MBBL31 Dec 2025 · 45 rows

East Coast (PADD 1) Refinery and Blender Net Production of Petroleum Coke (Thousand Barrels per Day)eia-petroleum-petroleum-sum-snd-mckrpp12-annualPADD 1annual22 MBBL/D31 Dec 2025 · 37 rows

Midwest (PADD 2) Refinery and Blender Net Production of Petroleum Coke (Thousand Barrels)eia-petroleum-petroleum-sum-snd-mckrpp21-annualPADD 2annual67,139 MBBL31 Dec 2025 · 45 rows

Midwest (PADD 2) Refinery and Blender Net Production of Petroleum Coke (Thousand Barrels per Day)eia-petroleum-petroleum-sum-snd-mckrpp22-annualPADD 2annual184 MBBL/D31 Dec 2025 · 37 rows

Gulf Coast (PADD 3) Refinery and Blender Net Production of Petroleum Coke (Thousand Barrels)eia-petroleum-petroleum-sum-snd-mckrpp31-annualPADD 3annual155,350 MBBL31 Dec 2025 · 45 rows

Gulf Coast (PADD 3) Refinery and Blender Net Production of Petroleum Coke (Thousand Barrels per Day)eia-petroleum-petroleum-sum-snd-mckrpp32-annualPADD 3annual426 MBBL/D31 Dec 2025 · 37 rows

Rocky Mountain (PADD 4) Refinery and Blender Net Production of Petroleum Coke (Thousand Barrels)eia-petroleum-petroleum-sum-snd-mckrpp41-annualPADD 4annual8,345 MBBL31 Dec 2025 · 45 rows

Rocky Mountain (PADD 4) Refinery and Blender Net Production of Petroleum Coke (Thousand Barrels per Day)eia-petroleum-petroleum-sum-snd-mckrpp42-annualPADD 4annual23 MBBL/D31 Dec 2025 · 37 rows

West Coast (PADD 5) Refinery and Blender Net Production of Petroleum Coke (Thousand Barrels)eia-petroleum-petroleum-sum-snd-mckrpp51-annualPADD 5annual36,728 MBBL31 Dec 2025 · 45 rows

West Coast (PADD 5) Refinery and Blender Net Production of Petroleum Coke (Thousand Barrels per Day)eia-petroleum-petroleum-sum-snd-mckrpp52-annualPADD 5annual101 MBBL/D31 Dec 2025 · 37 rows

U.S. Refinery and Blender Net Production of Petroleum Coke (Thousand Barrels)eia-petroleum-petroleum-sum-snd-mckrpus1-annualU.S.annual275,419 MBBL31 Dec 2025 · 45 rows

U.S. Refinery and Blender Net Production of Petroleum Coke (Thousand Barrels per Day)eia-petroleum-petroleum-sum-snd-mckrpus2-annualU.S.annual755 MBBL/D31 Dec 2025 · 43 rows

Latest observations

Recent records

East Coast (PADD 1) Refinery and Blender Net Production of Petroleum Coke (Thousand Barrels)eia-petroleum-petroleum-sum-snd-mckrpp11-monthlymonthly658 MBBL31 May 2026

East Coast (PADD 1) Refinery and Blender Net Production of Petroleum Coke (Thousand Barrels per Day)eia-petroleum-petroleum-sum-snd-mckrpp12-monthlymonthly21 MBBL/D31 May 2026

Midwest (PADD 2) Refinery and Blender Net Production of Petroleum Coke (Thousand Barrels)eia-petroleum-petroleum-sum-snd-mckrpp21-monthlymonthly5,760 MBBL31 May 2026

Midwest (PADD 2) Refinery and Blender Net Production of Petroleum Coke (Thousand Barrels per Day)eia-petroleum-petroleum-sum-snd-mckrpp22-monthlymonthly186 MBBL/D31 May 2026

Gulf Coast (PADD 3) Refinery and Blender Net Production of Petroleum Coke (Thousand Barrels)eia-petroleum-petroleum-sum-snd-mckrpp31-monthlymonthly14,668 MBBL31 May 2026

Gulf Coast (PADD 3) Refinery and Blender Net Production of Petroleum Coke (Thousand Barrels per Day)eia-petroleum-petroleum-sum-snd-mckrpp32-monthlymonthly473 MBBL/D31 May 2026

Rocky Mountain (PADD 4) Refinery and Blender Net Production of Petroleum Coke (Thousand Barrels)eia-petroleum-petroleum-sum-snd-mckrpp41-monthlymonthly575 MBBL31 May 2026

Rocky Mountain (PADD 4) Refinery and Blender Net Production of Petroleum Coke (Thousand Barrels per Day)eia-petroleum-petroleum-sum-snd-mckrpp42-monthlymonthly19 MBBL/D31 May 2026

West Coast (PADD 5) Refinery and Blender Net Production of Petroleum Coke (Thousand Barrels)eia-petroleum-petroleum-sum-snd-mckrpp51-monthlymonthly3,048 MBBL31 May 2026

West Coast (PADD 5) Refinery and Blender Net Production of Petroleum Coke (Thousand Barrels per Day)eia-petroleum-petroleum-sum-snd-mckrpp52-monthlymonthly98 MBBL/D31 May 2026

U.S. Refinery and Blender Net Production of Petroleum Coke (Thousand Barrels)eia-petroleum-petroleum-sum-snd-mckrpus1-monthlymonthly24,709 MBBL31 May 2026

U.S. Refinery and Blender Net Production of Petroleum Coke (Thousand Barrels per Day)eia-petroleum-petroleum-sum-snd-mckrpus2-monthlymonthly797 MBBL/D31 May 2026

East Coast (PADD 1) Refinery and Blender Net Production of Petroleum Coke (Thousand Barrels)eia-petroleum-petroleum-sum-snd-mckrpp11-monthlymonthly648 MBBL30 Apr 2026

East Coast (PADD 1) Refinery and Blender Net Production of Petroleum Coke (Thousand Barrels per Day)eia-petroleum-petroleum-sum-snd-mckrpp12-monthlymonthly22 MBBL/D30 Apr 2026

Midwest (PADD 2) Refinery and Blender Net Production of Petroleum Coke (Thousand Barrels)eia-petroleum-petroleum-sum-snd-mckrpp21-monthlymonthly5,029 MBBL30 Apr 2026

Midwest (PADD 2) Refinery and Blender Net Production of Petroleum Coke (Thousand Barrels per Day)eia-petroleum-petroleum-sum-snd-mckrpp22-monthlymonthly168 MBBL/D30 Apr 2026

Gulf Coast (PADD 3) Refinery and Blender Net Production of Petroleum Coke (Thousand Barrels)eia-petroleum-petroleum-sum-snd-mckrpp31-monthlymonthly14,083 MBBL30 Apr 2026

Gulf Coast (PADD 3) Refinery and Blender Net Production of Petroleum Coke (Thousand Barrels per Day)eia-petroleum-petroleum-sum-snd-mckrpp32-monthlymonthly469 MBBL/D30 Apr 2026

Rocky Mountain (PADD 4) Refinery and Blender Net Production of Petroleum Coke (Thousand Barrels)eia-petroleum-petroleum-sum-snd-mckrpp41-monthlymonthly603 MBBL30 Apr 2026

Rocky Mountain (PADD 4) Refinery and Blender Net Production of Petroleum Coke (Thousand Barrels per Day)eia-petroleum-petroleum-sum-snd-mckrpp42-monthlymonthly20 MBBL/D30 Apr 2026

West Coast (PADD 5) Refinery and Blender Net Production of Petroleum Coke (Thousand Barrels)eia-petroleum-petroleum-sum-snd-mckrpp51-monthlymonthly2,643 MBBL30 Apr 2026

West Coast (PADD 5) Refinery and Blender Net Production of Petroleum Coke (Thousand Barrels per Day)eia-petroleum-petroleum-sum-snd-mckrpp52-monthlymonthly88 MBBL/D30 Apr 2026

U.S. Refinery and Blender Net Production of Petroleum Coke (Thousand Barrels)eia-petroleum-petroleum-sum-snd-mckrpus1-monthlymonthly23,006 MBBL30 Apr 2026

U.S. Refinery and Blender Net Production of Petroleum Coke (Thousand Barrels per Day)eia-petroleum-petroleum-sum-snd-mckrpus2-monthlymonthly767 MBBL/D30 Apr 2026

East Coast (PADD 1) Refinery and Blender Net Production of Petroleum Coke (Thousand Barrels)eia-petroleum-petroleum-sum-snd-mckrpp11-monthlymonthly696 MBBL31 Mar 2026

East Coast (PADD 1) Refinery and Blender Net Production of Petroleum Coke (Thousand Barrels per Day)eia-petroleum-petroleum-sum-snd-mckrpp12-monthlymonthly22 MBBL/D31 Mar 2026

Midwest (PADD 2) Refinery and Blender Net Production of Petroleum Coke (Thousand Barrels)eia-petroleum-petroleum-sum-snd-mckrpp21-monthlymonthly5,307 MBBL31 Mar 2026

Midwest (PADD 2) Refinery and Blender Net Production of Petroleum Coke (Thousand Barrels per Day)eia-petroleum-petroleum-sum-snd-mckrpp22-monthlymonthly171 MBBL/D31 Mar 2026

Gulf Coast (PADD 3) Refinery and Blender Net Production of Petroleum Coke (Thousand Barrels)eia-petroleum-petroleum-sum-snd-mckrpp31-monthlymonthly13,854 MBBL31 Mar 2026

Gulf Coast (PADD 3) Refinery and Blender Net Production of Petroleum Coke (Thousand Barrels per Day)eia-petroleum-petroleum-sum-snd-mckrpp32-monthlymonthly447 MBBL/D31 Mar 2026

Rocky Mountain (PADD 4) Refinery and Blender Net Production of Petroleum Coke (Thousand Barrels)eia-petroleum-petroleum-sum-snd-mckrpp41-monthlymonthly688 MBBL31 Mar 2026

Rocky Mountain (PADD 4) Refinery and Blender Net Production of Petroleum Coke (Thousand Barrels per Day)eia-petroleum-petroleum-sum-snd-mckrpp42-monthlymonthly22 MBBL/D31 Mar 2026

West Coast (PADD 5) Refinery and Blender Net Production of Petroleum Coke (Thousand Barrels)eia-petroleum-petroleum-sum-snd-mckrpp51-monthlymonthly2,560 MBBL31 Mar 2026

West Coast (PADD 5) Refinery and Blender Net Production of Petroleum Coke (Thousand Barrels per Day)eia-petroleum-petroleum-sum-snd-mckrpp52-monthlymonthly83 MBBL/D31 Mar 2026

U.S. Refinery and Blender Net Production of Petroleum Coke (Thousand Barrels)eia-petroleum-petroleum-sum-snd-mckrpus1-monthlymonthly23,105 MBBL31 Mar 2026

U.S. Refinery and Blender Net Production of Petroleum Coke (Thousand Barrels per Day)eia-petroleum-petroleum-sum-snd-mckrpus2-monthlymonthly745 MBBL/D31 Mar 2026

East Coast (PADD 1) Refinery and Blender Net Production of Petroleum Coke (Thousand Barrels)eia-petroleum-petroleum-sum-snd-mckrpp11-monthlymonthly611 MBBL28 Feb 2026

East Coast (PADD 1) Refinery and Blender Net Production of Petroleum Coke (Thousand Barrels per Day)eia-petroleum-petroleum-sum-snd-mckrpp12-monthlymonthly22 MBBL/D28 Feb 2026

Midwest (PADD 2) Refinery and Blender Net Production of Petroleum Coke (Thousand Barrels)eia-petroleum-petroleum-sum-snd-mckrpp21-monthlymonthly5,373 MBBL28 Feb 2026

Midwest (PADD 2) Refinery and Blender Net Production of Petroleum Coke (Thousand Barrels per Day)eia-petroleum-petroleum-sum-snd-mckrpp22-monthlymonthly192 MBBL/D28 Feb 2026

Gulf Coast (PADD 3) Refinery and Blender Net Production of Petroleum Coke (Thousand Barrels)eia-petroleum-petroleum-sum-snd-mckrpp31-monthlymonthly11,799 MBBL28 Feb 2026

Gulf Coast (PADD 3) Refinery and Blender Net Production of Petroleum Coke (Thousand Barrels per Day)eia-petroleum-petroleum-sum-snd-mckrpp32-monthlymonthly421 MBBL/D28 Feb 2026

Rocky Mountain (PADD 4) Refinery and Blender Net Production of Petroleum Coke (Thousand Barrels)eia-petroleum-petroleum-sum-snd-mckrpp41-monthlymonthly648 MBBL28 Feb 2026

Rocky Mountain (PADD 4) Refinery and Blender Net Production of Petroleum Coke (Thousand Barrels per Day)eia-petroleum-petroleum-sum-snd-mckrpp42-monthlymonthly23 MBBL/D28 Feb 2026

West Coast (PADD 5) Refinery and Blender Net Production of Petroleum Coke (Thousand Barrels)eia-petroleum-petroleum-sum-snd-mckrpp51-monthlymonthly2,276 MBBL28 Feb 2026

West Coast (PADD 5) Refinery and Blender Net Production of Petroleum Coke (Thousand Barrels per Day)eia-petroleum-petroleum-sum-snd-mckrpp52-monthlymonthly81 MBBL/D28 Feb 2026

U.S. Refinery and Blender Net Production of Petroleum Coke (Thousand Barrels)eia-petroleum-petroleum-sum-snd-mckrpus1-monthlymonthly20,707 MBBL28 Feb 2026

U.S. Refinery and Blender Net Production of Petroleum Coke (Thousand Barrels per Day)eia-petroleum-petroleum-sum-snd-mckrpus2-monthlymonthly740 MBBL/D28 Feb 2026

East Coast (PADD 1) Refinery and Blender Net Production of Petroleum Coke (Thousand Barrels)eia-petroleum-petroleum-sum-snd-mckrpp11-monthlymonthly643 MBBL31 Jan 2026

East Coast (PADD 1) Refinery and Blender Net Production of Petroleum Coke (Thousand Barrels per Day)eia-petroleum-petroleum-sum-snd-mckrpp12-monthlymonthly21 MBBL/D31 Jan 2026

Midwest (PADD 2) Refinery and Blender Net Production of Petroleum Coke (Thousand Barrels)eia-petroleum-petroleum-sum-snd-mckrpp21-monthlymonthly5,860 MBBL31 Jan 2026

Midwest (PADD 2) Refinery and Blender Net Production of Petroleum Coke (Thousand Barrels per Day)eia-petroleum-petroleum-sum-snd-mckrpp22-monthlymonthly189 MBBL/D31 Jan 2026

Gulf Coast (PADD 3) Refinery and Blender Net Production of Petroleum Coke (Thousand Barrels)eia-petroleum-petroleum-sum-snd-mckrpp31-monthlymonthly13,950 MBBL31 Jan 2026

Gulf Coast (PADD 3) Refinery and Blender Net Production of Petroleum Coke (Thousand Barrels per Day)eia-petroleum-petroleum-sum-snd-mckrpp32-monthlymonthly450 MBBL/D31 Jan 2026

Rocky Mountain (PADD 4) Refinery and Blender Net Production of Petroleum Coke (Thousand Barrels)eia-petroleum-petroleum-sum-snd-mckrpp41-monthlymonthly699 MBBL31 Jan 2026

Rocky Mountain (PADD 4) Refinery and Blender Net Production of Petroleum Coke (Thousand Barrels per Day)eia-petroleum-petroleum-sum-snd-mckrpp42-monthlymonthly23 MBBL/D31 Jan 2026

West Coast (PADD 5) Refinery and Blender Net Production of Petroleum Coke (Thousand Barrels)eia-petroleum-petroleum-sum-snd-mckrpp51-monthlymonthly2,964 MBBL31 Jan 2026

West Coast (PADD 5) Refinery and Blender Net Production of Petroleum Coke (Thousand Barrels per Day)eia-petroleum-petroleum-sum-snd-mckrpp52-monthlymonthly96 MBBL/D31 Jan 2026

U.S. Refinery and Blender Net Production of Petroleum Coke (Thousand Barrels)eia-petroleum-petroleum-sum-snd-mckrpus1-monthlymonthly24,116 MBBL31 Jan 2026

U.S. Refinery and Blender Net Production of Petroleum Coke (Thousand Barrels per Day)eia-petroleum-petroleum-sum-snd-mckrpus2-monthlymonthly778 MBBL/D31 Jan 2026

East Coast (PADD 1) Refinery and Blender Net Production of Petroleum Coke (Thousand Barrels)eia-petroleum-petroleum-sum-snd-mckrpp11-annualannual7,857 MBBL31 Dec 2025

East Coast (PADD 1) Refinery and Blender Net Production of Petroleum Coke (Thousand Barrels)eia-petroleum-petroleum-sum-snd-mckrpp11-monthlymonthly675 MBBL31 Dec 2025

East Coast (PADD 1) Refinery and Blender Net Production of Petroleum Coke (Thousand Barrels per Day)eia-petroleum-petroleum-sum-snd-mckrpp12-annualannual22 MBBL/D31 Dec 2025

East Coast (PADD 1) Refinery and Blender Net Production of Petroleum Coke (Thousand Barrels per Day)eia-petroleum-petroleum-sum-snd-mckrpp12-monthlymonthly22 MBBL/D31 Dec 2025

Midwest (PADD 2) Refinery and Blender Net Production of Petroleum Coke (Thousand Barrels)eia-petroleum-petroleum-sum-snd-mckrpp21-annualannual67,139 MBBL31 Dec 2025

Midwest (PADD 2) Refinery and Blender Net Production of Petroleum Coke (Thousand Barrels)eia-petroleum-petroleum-sum-snd-mckrpp21-monthlymonthly5,958 MBBL31 Dec 2025

Midwest (PADD 2) Refinery and Blender Net Production of Petroleum Coke (Thousand Barrels per Day)eia-petroleum-petroleum-sum-snd-mckrpp22-annualannual184 MBBL/D31 Dec 2025

Midwest (PADD 2) Refinery and Blender Net Production of Petroleum Coke (Thousand Barrels per Day)eia-petroleum-petroleum-sum-snd-mckrpp22-monthlymonthly192 MBBL/D31 Dec 2025

Gulf Coast (PADD 3) Refinery and Blender Net Production of Petroleum Coke (Thousand Barrels)eia-petroleum-petroleum-sum-snd-mckrpp31-annualannual155,350 MBBL31 Dec 2025

Gulf Coast (PADD 3) Refinery and Blender Net Production of Petroleum Coke (Thousand Barrels)eia-petroleum-petroleum-sum-snd-mckrpp31-monthlymonthly13,559 MBBL31 Dec 2025

Gulf Coast (PADD 3) Refinery and Blender Net Production of Petroleum Coke (Thousand Barrels per Day)eia-petroleum-petroleum-sum-snd-mckrpp32-annualannual426 MBBL/D31 Dec 2025

Gulf Coast (PADD 3) Refinery and Blender Net Production of Petroleum Coke (Thousand Barrels per Day)eia-petroleum-petroleum-sum-snd-mckrpp32-monthlymonthly437 MBBL/D31 Dec 2025

Rocky Mountain (PADD 4) Refinery and Blender Net Production of Petroleum Coke (Thousand Barrels)eia-petroleum-petroleum-sum-snd-mckrpp41-annualannual8,345 MBBL31 Dec 2025

Rocky Mountain (PADD 4) Refinery and Blender Net Production of Petroleum Coke (Thousand Barrels)eia-petroleum-petroleum-sum-snd-mckrpp41-monthlymonthly695 MBBL31 Dec 2025

Rocky Mountain (PADD 4) Refinery and Blender Net Production of Petroleum Coke (Thousand Barrels per Day)eia-petroleum-petroleum-sum-snd-mckrpp42-annualannual23 MBBL/D31 Dec 2025

Rocky Mountain (PADD 4) Refinery and Blender Net Production of Petroleum Coke (Thousand Barrels per Day)eia-petroleum-petroleum-sum-snd-mckrpp42-monthlymonthly22 MBBL/D31 Dec 2025

West Coast (PADD 5) Refinery and Blender Net Production of Petroleum Coke (Thousand Barrels)eia-petroleum-petroleum-sum-snd-mckrpp51-annualannual36,728 MBBL31 Dec 2025

West Coast (PADD 5) Refinery and Blender Net Production of Petroleum Coke (Thousand Barrels)eia-petroleum-petroleum-sum-snd-mckrpp51-monthlymonthly2,725 MBBL31 Dec 2025

West Coast (PADD 5) Refinery and Blender Net Production of Petroleum Coke (Thousand Barrels per Day)eia-petroleum-petroleum-sum-snd-mckrpp52-annualannual101 MBBL/D31 Dec 2025

West Coast (PADD 5) Refinery and Blender Net Production of Petroleum Coke (Thousand Barrels per Day)eia-petroleum-petroleum-sum-snd-mckrpp52-monthlymonthly88 MBBL/D31 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.