| 1 | ExxonMobil Chemical Co., Baytown,Tex. | 3 500 000 | 4 743 027 |
| 2 | Formosa Plastics Corp. USA, Point Comfort,Tex | 2 883 000 | 3 594 017 |
| 3 | Chevron Phillips Chemical, Cedar Bayou,Tex | 2 600 000 | 3 300 707 |
| 4 | Dow Chemical Co., Freeport (LHC 7),Tex | 2 090 000 | 2 653 261 |
| 5 | Sasol/LyondellBassell, Lake Charles,La | — | 2 539 006 |
| 6 | Chevron Phillips Chemical, Sweeny,Tex | 1 950 000 | 2 642 544 |
| 7 | LyondellBasell Industries, Channelview,Tex. | 1 860 000 | 2 361 275 |
| 8 | INEOS Olefins and Polymers, Chocolate Bayou,Tex | 1 860 000 | 2 339 998 |
| 9 | Exxon/SABIC, Portland, Tex | — | 2 285 105 |
| 10 | Shell Chemicals Ltd. , Monaca, Pa | — | 2 031 205 |
| 11 | Westlake Petrochemicals Corp., Sulphur #1,La | 1 520 000 | 1 929 644 |
| 12 | Shell Chemicals Ltd., Norco, La | 1 432 000 | 1 940 576 |
| 13 | Dow Chemical Co., Plaquemine (LHC 2),La | 1 247 000 | 1 583 070 |
| 14 | LyondellBasell Industries, LaPorte, Tex. | 1 180 000 | 1 486 443 |
| 15 | BASF/Total, Port Arthur, Tex. | 1 140 000 | 1 544 872 |
| 16 | LyondellBasell Industries, Corpus Christi, Tex. | 1 134 000 | 1 439 616 |
| 17 | Bayport Polymers, LLC, Port Arthur, Tex. | — | — |
| 18 | Axial/Lotte, Lake Charles, La | — | — |
| 19 | ExxonMobil Chemical Co., Baton Rouge,La | — | 1 355 151 |
| 20 | Dow Chemical Co., Taft 1,La. | — | — |
| 21 | ExxonMobil Chemical Co., Beuamont,Tex. | 900 000 | 1 219 636 |
| 22 | Shell Chemicals Ltd., Deer Park,Tex | 889 000 | 1 113 567 |
| 23 | Nova Chemicals, Geismar,La. | 885 000 | 1 123 510 |
| 24 | Chevron Phillips Chemical, Port Arthur,Tex | 855 000 | 1 085 425 |
| 25 | Dow Chemical Co., Orange,Tex. | 771 000 | 978 787 |
| 26 | Eastman Chemical Co., Longview,Tex | 650 000 | 825 177 |
| 27 | Motiva, Port Arthur,Tex. | 635 000 | 860 521 |
| 28 | Occidental Chemical/Mexichem, Ingelside, Tex | 550 000 | 698 227 |
| 29 | LyondellBasell Industries, Morris, Ill. | 550 000 | 698 227 |
| 30 | LyondellBasell Industries, Clinton, Iowa | 525 000 | 666 489 |
| 31 | Shinetsu, Plaquemine, La | — | 634 751 |
| 32 | Indorama Ventures Olefins, LLC, Carlyss, La | 440 000 | 558 581 |
| 33 | Westlake Petrochemicals Corp., Calvert CityKy. | 331 000 | 420 205 |
| 34 | Indorama Ventures Olefins, LLC, Port Neches,Tex. | 235 900 | 299 476 |
