Mariposa Energy, LLC
Byron, CA · ALAMEDA COUNTY · NAICS 221112
Annual Emissions History
| Year | Total CO2e (MT) |
|---|---|
| 2023 | 47,679 |
| 2022 | 52,038 |
| 2021 | 50,609 |
| 2020 | 61,710 |
| 2019 | 52,955 |
| 2018 | 65,311 |
| 2017 | 79,955 |
| 2016 | 49,817 |
| 2015 | 47,447 |
| 2014 | 56,777 |
| 2013 | 44,508 |
| 2012 | 43,893 |
Facility Insight: Mariposa Energy, LLC
Mariposa Energy, LLC (EPA GHGRP Facility ID 1000051) reported 48K metric tons of CO2-equivalent in 2023, operating in Byron, CA within ALAMEDA COUNTY. The site is classified under Power Plants with NAICS code 221112, placing it within the group of U.S. facilities that cross the 25,000 MT CO2e annual reporting threshold set by EPA under 40 CFR Part 98. Self-reported emissions are verified by EPA staff, and the reported CO2e total aggregates CO2, methane (CH4), and nitrous oxide (N2O) weighted by their 100-year global warming potentials.
The facility has 12 years of reported data on record, covering the 2012–2023 window. Over that period, annual CO2e emissions rose by 8.6%, with the peak observed year showing up to 80K MT CO2e. Because facility emissions can swing year-to-year based on production volume, fuel mix, outages, or control upgrades, a single year rarely tells the full story — the emissions history table above unpacks CO2, CH4, and N2O contributions separately so readers can see which gas is driving the trend.
For context, this reported total captures Scope 1 direct emissions from on-site combustion, industrial processes, and fugitive sources — it excludes Scope 2 purchased electricity and Scope 3 upstream or downstream emissions. Users comparing this facility to others in CA should cross-reference with the state-level rollup on our CA emissions page and the parent company profile where linked, since facility-level disclosures are most meaningful when placed against the operator's broader portfolio. All underlying data is EPA-published and freely available via the GHGRP envirofacts API.
Emissions Analysis
Mariposa Energy, LLC reports 48K MT CO2e, placing it among smaller reporting facilities in the GHGRP.
Emissions have remained relatively stable across reporting years, suggesting consistent operational patterns. EPA GHGRP covers facilities emitting 25,000+ MT CO2e annually.
Frequently Asked Questions
How much CO2 does Mariposa Energy, LLC emit? ▼
Mariposa Energy, LLC reported 48K metric tons of CO2 equivalent (CO2e) in 2023, according to EPA Greenhouse Gas Reporting Program data.
Is Mariposa Energy, LLC reducing emissions? ▼
Over 12 reporting years (2012–2023), Mariposa Energy, LLC's emissions have increased by 8.6%. Emissions have remained relatively stable.
What industry sector is Mariposa Energy, LLC in? ▼
Mariposa Energy, LLC is classified under Power Plants (NAICS code 221112). Located in Byron, CA.
What gases does Mariposa Energy, LLC emit? ▼
Mariposa Energy, LLC reports emissions of CO2 (carbon dioxide), CH4 (methane), and N2O (nitrous oxide), converted to CO2-equivalent using EPA global warming potentials. The gas breakdown for each reporting year is shown in the emissions history table above.
How many years of data are available for Mariposa Energy, LLC? ▼
Mariposa Energy, LLC has 12 years of EPA GHGRP data on record, spanning 2012 to 2023. The GHGRP has collected data since 2010 from facilities emitting 25,000+ MT CO2e annually.
Where does this emissions data come from? ▼
All data comes from the EPA Greenhouse Gas Reporting Program (GHGRP), which requires facilities emitting 25,000+ metric tons of CO2e per year to report annually. Data is self-reported by facilities and verified by the EPA.
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Related Data Portals
Source: EPA GHGRP Facility ID 1000051. Data subject to facility self-reporting. Not compliance advice.
Read our methodology — how this data is sourced, computed, and verified.