Since 2022, MISO has provided a publicly available emissions dashboards which display historical emissions from the Energy Information Administration (EIA) and Environmental Protection Agency (EPA) data with projected emissions, produced from member-provided information as part of MISO's Regional Resource Assessment (RRA). In 2024, MISO introduced near real-time generated emissions dashboard pages reporting:
b) marginal emissions published on a one-day lag from MISO's Market Reports (Fuel on the Margin)
On March 31, 2025, MISO posted an additional emissions display page, "Consumed," containing location-based consumed carbon emission rates and total consumed carbon emission estimates. MISO State Estimator data and MISO's network and commercial models are inputs for these estimate calculations. Consumed emission estimates are calculated using CarbonFlow™, implemented by Singularity.
To see the live Emissions Dashboard, https://miso.singularity.energy
To learn more about MISO's emissions initiatives, see our recent report.
FAQ (Frequently Asked Questions):
Where do I go if I have questions on the Emissions Dashboard?
A guided "tour" of the Dashboard is available by clicking this icon . Dashboard tours are unique to each dashboard page. If the dashboard tour does not address all questions, please navigate to the MISO Help Center to submit questions via a Help Center Case. Use Case Category "Product Launch."
How can the data be accessed?
Data on each dashboard page can be customized via pulldown menus and the map graphic.
For what greenhouse gases are emissions estimates available?
- Historical and Projected Emissions: CO2, CO2e, SO2, NOx
- Near Real-Time and Marginal Emissions: CO2
- Consumed Emissions: CO2e
Can I download this information?
Yes. Click on this icon on each dashboard page to download selected information, or on
next to the chart images for options to save the chart file.
Is an API available for extracting consumed emissions estimates?
Yes. To extract data using the API, first create an account with Singularity (emissions dashboard host) by clicking on this button on upper right corner of the dashboard . After you have created an account, an email will be sent to you for account verification. Once you verify the account, you will be able to click on the account button
and obtain the API security key.
Click on the box containing this key to copy it. For detailed API documentation, please click on the
icon on the consumed emissions dashboard page. At present, the API feature is only available on the consumed emissions dashboard page.
How often is this information updated?
Each page is updated on a different schedule.
- Historical and Projected Emissions: pages are updated annually as new information becomes available.
- Near Real-Time Emissions: page is updated every 5-minutes following publication of MISO's real-time fuel mix.
- Marginal Emissions: page is updated on a one-day lag, driven by publication timing of MISO's Fuel on the Margin report.
- Consumed Emission: page is updated hourly, approximately 90-minutes post real-time, with multiple geographic aggregations. MISO’s footprint, MISO subregions, and multiple states within MISO will be reported near real-time. All states and subregions in MISO contain four or more LBAs as required for asset masking to protect confidentiality.
- For those states with significant participation in MISO, where the state’s energy data is fully modeled, emissions estimates will be reported: Arkansas, Illinois, Indiana, Iowa, Louisiana, Michigan, Minnesota, North Dakota, and Wisconsin.
Reporting timing of consumed emissions estimates for the following geographic aggregations will be delayed to protect data confidentiality:
- Total consumed emissions estimates for MISO LRZ’s (Local Resource Zones) and LBA’s (Local Balancing Authorities) will be published on a 2-month lag, consistent with utility reporting to EIA (Energy Information Administration) Form 861-M. Certain LRZs contain fewer than four LBAs, so LRZ data will be released on the same report timing delay as LBA-level data.
- Consumed emissions rate estimates at the county level will be reported one month after the end of each quarter, consistent with utility reporting to EPA CEMS (Continuous Emissions Management System). Total consumed emissions are not reported at the county level to protect confidential nodal load data.
How is this information similar or different from one another and from EIA (Energy Information Administration) information?
- Historical Emissions: page leverages EIA and EPA information reported by utilities to the federal government to report generated emissions.
- Near Real-Time / Marginal Emissions: pages reflect operational data from MISO's website to report generated emissions.
- Projected Emissions: page is informed by member-provided plans information and MISO-modeled future capacity as part of MISO Regional Resource Assessment deliverables to model generated emissions.
- Consumed Emissions: inputs for this page are MISO State Estimator data and MISO’s network and commercial models using CarbonFlow™ implemented by Singularity. Geographic aggregations reported are customized to MISO’s footprint and reporting geographies. While generated and consumed emission totals are equal for a universe, the corresponding allocation of emissions at points within that universe will vary. This is because consumed emissions are traced to points of load based on physical power flows and have incorporated the emissions impact of imports and exports. In contrast, generated emissions are tracked from each individual generator within a utility service area or other territory.
Do dashboards contain confidential information?
No. All information in MISO's dashboards is publicly consumable, non-confidential and non-market sensitive.
Why don't you use plant-specific information for near real-time generated emissions estimates?
- MISO is using existing operational (footprint-wide) reports to generate emissions estimates complementary to other markets & operations displays for more holistic situational awareness. This footprint-wide granularity is consistent with near real-time emissions estimates reported by other ISO's and RTO's.
- Providing plant-specific information near real-time could provide insights about market behavior, which is why plant-specific historical emissions data is published on a significant lag versus real-time.
Do other ISOs and RTOs publish this information?
Yes, although the form varies, all ISOs and RTOs are either planning to publish or currently publish emissions information.
How is this different from PJM data?
- Currently MISO's near real-time generated and marginal emissions estimates only include CO2.
- MISO plans to publish locational marginal emission rates, using a method similar to that which PJM publishes, in late 2025.
- PJM provides hourly marginal emissions estimates to reflect rates of CO2, NOx and SO2 on a rolling 24-hour basis at a footprint level. Marginal emissions are those caused by production of the last energy on the system.
- PJM also provides marginal emission rates for individual load nodes for both 5-minute and hourly bases via its Data Miner platform.
Why is MISO doing this?
MISO's objective in providing emissions estimates as a data service is to deliver incremental value to MISO members, designed to enable both reporting those emissions and providing emissions-related services to their own customers.
How can this data be used?
MISO has terms of use for information shared via its website, www.misoenergy.org. A disclaimer (immediately below) will be shared within a README file that will accompany every data download of emissions estimates.
The content within this document (the “Information”) includes both materials created by MISO and content provided by third parties. MISO does not warrant or guarantee the accuracy, completeness, integrity, or quality of any of the Information, including third-party content. MISO disclaims all representations and warranties regarding the accuracy, integrity, or quality of the content, information, and data contained herein. Under no circumstances shall MISO be liable for any damages arising from the use of the Information, including, but not limited to, direct, indirect, special, incidental, or consequential damages.
Where can I obtain detailed technical support for your methods, calculations and key assumptions?
For more detail on how emissions estimates are calculated, technical documentation will be made available within each page's dashboard "tour" or via this icon on the consumed emissions dashboard page.
Will MISO incorporate emissions data into market pricing and dispatch rules?
Emissions data will not be incorporated into market pricing or energy dispatch at MISO.
How does MISO perceive the data quality for areas outside its footprint?
MISO has the best data for both energy operations and emissions estimates within its footprint. Data for areas outside MISO's footprint is regularly updated and used to make MISO operational decisions, but it may or may not be the same quality as MISO data.
Does MISO’s consumed emissions dashboard reflect the emissions impact of RECs (Renewable Energy Certificates) or PPAs (Power Purchase Agreements)?
- No. Consumed emissions reported on MISO’s dashboard are “location-based” data that reflect how electricity physically flows from generators to consumers along transmission lines. They do not represent “market-based” allocations such as power purchase agreements, wholesale market purchases, utility tariffs, or RECs.
- As a proxy in accounting for the impact of carbon-free energy contracts, MISO publishes a non-CFE (carbon-free energy) emission rate on its consumed emissions dashboard, which is also known as a “fossil fuel only” rate. This rate assumes that all carbon-free electrons in the selected region have been purchased.