| TPY | facn | facility | location |
| 1) | 144096.4 | 0641160017 | W. H. SAMMIS PLANT | STRATTON |
| 2) | 142776.1 | 0616000000 | CONESVILLE POWER PLANT | CONESVILLE |
| 3) | 121917.5 | 0684000000 | MUSKINGUM RIVER POWER PLANT | WATERFORD |
| 4) | 117551.8 | 0701000007 | DP&L, J.M. STUART GENERATING STATION | ABERDEEN |
| 5) | 85699.0 | 1431350093 | CINERGY CORP MIAMI FORT STATION | NORTH BEND |
| 6) | 75866.1 | 0641050002 | CARDINAL POWER PLANT (CARDINAL OPERATING COMPANY) | BRILLIANT |
| 7) | 74453.0 | 0627000003 | OHIO VALLEY ELECTRIC CORP., KYGER CREEK STATION | CHESHIRE |
| 8) | 69954.1 | 1413100008 | CINERGY CG&E WC BECKJORD STATION | NEW RICHMOND |
| 9) | 65332.2 | 0243160009 | CLEVELAND ELECTRIC ILLUMINATING CO., EASTLAKE PLANT | EASTLAKE |
| 10) | 46027.6 | 0247030013 | AVON LAKE POWER PLANT | AVON LAKE |
| 11) | 35369.2 | 0607130015 | R. E. BURGER PLANT | SHADYSIDE |
| 12) | 31832.7 | 0627010056 | GAVIN POWER PLANT | CHESHIRE |
| 13) | 23695.3 | 0671010028 | CHILLICOTHE PAPER INC. | CHILLICOTHE |
| 14) | 21517.8 | 1413090154 | CINCINNATI GAS & ELECTRIC CO., WM. H. ZIMMER | MOSCOW |
| 15) | 19669.7 | 0701000060 | DP&L, KILLEN GENERATING STATION | MANCHESTER |
| 16) | 17243.9 | 0278060023 | NILES PLANT | NILES |
| 17) | 13516.5 | 0448020006 | TOLEDO EDISON CO., BAY SHORE PLANT | OREGON |
| 18) | 13108.4 | 0285010188 | DEPARTMENT OF PUBLIC UTILITIES, CITY OF ORRVILLE, OHIO | ORRVILLE |
| 19) | 9283.4 | 0165000006 | PICWAY POWER PLANT | LOCKBOURNE |
| 20) | 8623.3 | 0448010246 | SUN COMPANY, INC. | OREGON |
| 21) | 8197.3 | 0204010000 | CLEVELAND ELECTRIC ILLUMINATING CO., ASHTABULA PLANT | ASHTABULA |
| 22) | 6271.6 | 0857780013 | DP&L, O.H. HUTCHINGS GENERATING STATION | MIAMISBURG |
| 23) | 6008.5 | 1677010193 | GOODYEAR TIRE & RUBBER CO. | AKRON |
| 24) | 5799.3 | 0285020076 | CARAUSTAR INDUSTRIES, INC. | RITTMAN |
| 25) | 4617.8 | 0243110008 | PAINESVILLE MUNICIPAL ELECTRIC PLANT | PAINESVILLE |
| 26) | 4432.9 | 0285020059 | MORTON SALT DIVISION OF MORTON INTERNATIONAL, INC. | RITTMAN |
| 27) | 3998.3 | 1409010006 | AK STEEL CORPORATION | MIDDLETOWN |
| 28) | 3969.8 | 0370020002 | SHELBY MUNICIPAL LIGHT PLANT | SHELBY |
| 29) | 3356.8 | 0335010105 | CAMPBELL SOUP COMPANY | NAPOLEON |
| 30) | 3139.8 | 0302020012 | PREMCOR REFINING GROUP | LIMA |
| 31) | 3064.0 | 0684010011 | KRATON POLYMERS U.S. LLC | BELPRE |
| 32) | 3049.4 | 0656000001 | ORMET PRIMARY ALUMINUM CORP. | HANNIBAL |
| 33) | 2570.1 | 0684010049 | DEGUSSA ENGINEERED CARBONS LP | BELPRE |
| 34) | 2448.3 | 1318000245 | CLEVELAND ELECTRIC ILLUMINATING CO., LAKE SHORE PLANT | CLEVELAND |
| 35) | 2276.8 | 1318003059 | THE MEDICAL CENTER COMPANY | CLEVELAND |
| 36) | 2262.2 | 1677010757 | AKRON THERMAL ENERGY CORPORATION | AKRON |
| 37) | 2260.3 | 0666000000 | UNITED STATES ENRICHMENT CORPORATION | PIKETON |
| 38) | 2164.0 | 1409040243 | CITY OF HAMILTON DEPARTMENT OF PUBLIC UTILITIES | HAMILTON |
| 39) | 2016.8 | 0679010146 | DOVER MUNICIPAL LIGHT PLANT | DOVER |
| 40) | 1967.8 | 0374000010 | CARMEUSE OHIO, INC. - MAPLEGROVE LIME PLANT | BETTSVILLE |
| 41) | 1938.5 | 0278000463 | WCI STEEL, INC. | HOWLAND/WEATHERSFIELD/WARREN |
| 42) | 1920.0 | 1677010027 | CARGILL, INCORPORATED - SALT DIVISION (AKRON, OH) | AKRON |
| 43) | 1848.4 | 1431390903 | THE PROCTER AND GAMBLE CO. | CINCINNATI |
| 44) | 1719.8 | 1431070035 | COGNIS CORP | CINCINNATI |
| 45) | 1631.3 | 1409040212 | SMART PAPERS - HAMILTON MILL | HAMILTON |
| 46) | 1574.0 | 1431350817 | E.I. DU PONT FORT HILL PLANT | NORTH BEND |
| 47) | 1567.3 | 0372000127 | MARTIN MARIETTA MAGNESIA SPECIALTIES INC. | WOODVILLE |
| 48) | 1565.8 | 0306010010 | CITY OF ST. MARYS POWER PLANT | ST. MARYS |
| 49) | 1343.3 | 0857190001 | APPLETON PAPERS INC. | WEST CARROLLTON |
| 50) | 1240.0 | 1409000353 | MILLER BREWERIES EAST, INC. | TRENTON |
| 51) | 1140.1 | 0605010016 | OHIO UNIVERSITY LAUSCHE HEATING PLANT | ATHENS |
| 52) | 1101.5 | 0448020007 | BP PRODUCTS NORTH AMERICA INC | OREGON |
| 53) | 1096.7 | 0381000011 | BUNGE NORTH AMERICA | DELPHOS |
| 54) | 1009.7 | 1318000246 | CLEVELAND THERMAL LLC | CLEVELAND |
| 55) | 992.3 | 0641090010 | WHEELING-PITTSBURGH STEEL CORPORATION - STEUBENVILLE | STEUBENVILLE |
| 56) | 961.6 | 0250110024 | YOUNGSTOWN THERMAL | YOUNGSTOWN |
| 57) | 946.2 | 0829700441 | WRIGHT-PATTERSON AIR FORCE BASE | WRIGHT-PATTERSON AFB |
| 58) | 862.8 | 1677010029 | NOVEON, INC. | AKRON |
| 59) | 836.2 | 0302000001 | CHEMTRADE LOGISTICS INC | CAIRO |
| 60) | 753.5 | 0372000081 | CARMEUSE LIME INC MILLERSVILLE OPERATIONS | MILLERSVILLE |
| 61) | 716.0 | 1318270383 | HYDRAULIC PRESS BRICK | INDEPENDENCE |
| 62) | 688.5 | 0362000079 | GRAYMONT DOLIME (OH), INC. | GENOA |
| 63) | 614.7 | 0630010005 | SHIELDALLOY METALLURGICAL CORPORATION | CAMBRIDGE |
| 64) | 584.9 | 0684000105 | GLOBE METALLURGICAL INC. | WATERFORD |
| 65) | 560.7 | 0857041124 | CARGILL, INC. - DAYTON | DAYTON |
| 66) | 556.4 | 0448020014 | MARSULEX, INC. | OREGON |
| 67) | 551.2 | 0660010006 | AK STEEL - ZANESVILLE WORKS | ZANESVILLE |
| 68) | 535.4 | 1409010043 | MOSINEE HOLDINGS, INC. | MIDDLETOWN |
| 69) | 530.4 | 1318120180 | FORD MOTOR COMPANY, CLEVELAND CASTING PLANT | BROOK PARK |
| 70) | 510.1 | 1576000301 | MARATHON PETROLEUM COMPANY LLC, CANTON REFINERY | CANTON |
| 71) | 454.5 | 1576050614 | THE TIMKEN COMPANY - BEARING PLANTS | CANTON |
| 72) | 451.2 | 0671010104 | CHILLICOTHE CORRECTIONAL INSTITUTION | CHILLICOTHE |
| 73) | 442.3 | 0247100408 | OBERLIN COLLEGE | OBERLIN |
| 74) | 422.5 | 0829700165 | CEMEX, INC. | XENIA |
| 75) | 403.0 | 1431010054 | LANXESS CORPORATION ADDYSTON, OH PLANT | ADDYSTON |