EPA GHGRP · state profile · OH
Ohio - top-third state emissions
According to the EPA's Greenhouse Gas Reporting Program (GHGRP), an upper-third state rollup: 116.0M MT CO₂e from 346 facilities (#4 of 54 states).
- among states
- #4
- Total CO₂e - Mega emitter
- 116.0M MT
- Facilities
- 346
- Companies
- 155
- Avg / facility - High intensity
- 335K MT
Data updated May 2026
Ohio reports 116.0M MT CO₂e from 346 EPA GHGRP facilities and 155 parent companies (#4 of 54 U.S. states by aggregated facility CO₂e), led by LIGHTSTONE GENERATION at 15.7M MT (~14% of the state total).
- #4 of 54 states
- LIGHTSTONE GENERATION 13.6% of state
- 4.5% of U.S. GHGRP total
- Avg 335K MT per facility · May 2026
Dispersed in-state reporter mix
LIGHTSTONE GENERATION is the largest single reporter at 13.6% of Ohio CO₂e (15.7M MT), but the top three still account for only 29.7% across 155 parent companies. Shares use EPA GHGRP facilities sited in OH only, not each parent's company-wide total.
- Ohio is 4.5% of the 2.57B MT U.S. GHGRP facility rollup across 54 jurisdictions.
- Leading EPA sector by CO₂e: Power Plants at 65.2% (75.7M MT across 58 facilities) - orthogonal to the facility-count sector mix below.
- Trails Pennsylvania by 1.2M MT on the same state ranking.
- Leads Florida by 337K MT on the same state ranking.
Ohio vs all states by reported GHGRP CO₂e
Where this state's aggregated facility Scope 1 sits among every state and territory in the EPA GHGRP file (readout in million MT)
116 4th of 54 higher than 50 of 54 states
States and territories, banded by total reported facility CO₂e (MT)
Each bar is a band; taller bars hold more states. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count and share, and where it sits relative to this entry.
Source EPA Greenhouse Gas Reporting Program · May 2026
Facility mix · EPA sector count
How 346 Ohio facilities split by EPA sector
Exclusive in-state facility counts by EPA industry_sector, orthogonal to the leading-parent CO₂e share lens above. Source: EPA GHGRP facility reports in Ohio.
Facility mix · Scope 1 size bands
How 346 Ohio facilities split by latest reported Scope 1
Exclusive in-state facility counts by latest reported Scope 1 size band, orthogonal to the EPA sector mix above. Source: EPA GHGRP facility reports in Ohio.
Largest corporate emitters in Ohio
Ohio - top corporate emitters (MT CO₂e)
Company footprint
Which companies combine scale and emissions?
Each point is a leading Ohio reporter. The crosshairs mark the median among the companies shown, so the chart distinguishes a larger facility footprint from a higher emissions total.
This is a comparison of the leading 12 reporters displayed above, not a measure of production, population, or total company-wide emissions outside Ohio.
Read the chart values
- LIGHTSTONE GENERATION 4 sites · 15.7M MT
- BUCKEYE POWER 3 sites · 9.4M MT
- Vistra 40 sites · 9.3M MT
- CLEVELAND-CLIFFS 28 sites · 9.0M MT
- AMERICAN ELECTRIC POWER CO 22 sites · 6.4M MT
- SOUTH FIELD ENERGY 1 sites · 3.0M MT
- Guernsey Power Station 1 sites · 2.9M MT
- OREGON CLEAN ENERGY CENTER 1 sites · 2.4M MT
- CLEAN ENERGY FUTURES - LORDSTOWN 1 sites · 2.3M MT
- CARROLL COUNTY ENERGY 1 sites · 2.2M MT
- LS Power Development 22 sites · 1.8M MT
- RUMPKE CONSOLIDATED COS 9 sites · 1.5M MT
State insight: Ohio
Ohio (OH) reports 116.0M MT CO₂e from 346 EPA GHGRP facilities operated by 155 companies (#4 of 54 states by aggregated facility CO₂e). Per-facility average is about 335K MT. Power Plants leads the in-state CO₂e mix at 65.2%.
Upper-third emitters here include LIGHTSTONE GENERATION, BUCKEYE POWER, Vistra (29.7% of the OH total). These are Scope 1 facility reports only - not a full state inventory or company-wide footprint. See methodology.
Largest corporate emitters in Ohio
Highest-emitting GHGRP facilities in Ohio
Nationwide peers for a top-third state rollup
Two EPA GHGRP peer sets for an upper-third state (116.0M MT): nearest CO₂e totals and facility-book matches beyond the in-state tables above.
Similar reported CO₂e
Nearest states by aggregated facility CO₂e (116.0M MT here).
Similar facility inventory
Nearest states by GHGRP reporting facility count (346 here).
State totals aggregate EPA Greenhouse Gas Reporting Program (GHGRP) facility reports sited in Ohio (OH). Figures reflect facility self-reporting, not a full state inventory. See our methodology. Retrieved and formatted by PlainCarbon
Related reading: Understanding corporate carbon reporting · All states · Methodology
Disclaimer: This information is provided for informational purposes only and does not constitute professional advice. Data is sourced from the EPA Greenhouse Gas Reporting Program (GHGRP). Consult a qualified professional before making decisions based on this data.