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Long-run Marginal CO2 Emission Rates Workbooks for 2020 Standard Scenarios Cambium Data

Published by National Renewable Energy Laboratory | Department of Energy | Metadata Last Checked: February 25, 2026 | Last Modified: 2026-02-24T18:04:38Z
This dataset has been superseded by a new set of workbooks that can be found here: https://data.nlr.gov/submissions/183 These workbooks contain modeled estimates of long-run marginal CO2 emission rates (LRMER) for the contiguous United States. The LRMER is an estimate of the rate of emissions that would be either induced or avoided by a long-term (i.e., more than several years) change in electrical demand. It incorporates both the projected changes to the electric grid, as well as the potential for an incremental change in electrical demand to influence the structural evolution of the grid (i.e., the building and retiring of capital assets, such as generators and transmission lines). It is therefore distinct from the more-commonly-known short-run marginal, which treats grid assets as fixed. In addition to year-over-year data, the Levelized LRMER worksheet within each workbook is set up to produce a levelized long-run marginal emission rate based on user-provided inputs. These levelized LRMER values are intended for analysts to use when estimating the emissions induced (or avoided) by a long-term change in end-use electricity demand. Three future scenarios are provided in separate workbooks: A Mid-case (i.e., business-as-usual), and two scenarios with relatively higher or lower renewable energy costs. For more details on these scenarios, see the Standard Scenarios 2020 Report (https://www.nlr.gov/docs/fy21osti/77442.pdf). For more data underlying each scenario, see the Standard Scenarios 2020 project (Cambium data) at https://cambium.nlr.gov/. This data was produced as part of the Cambium project. For more details about the methodology, see the Cambium Documentation: Version 2020 (https://www.nlr.gov/docs/fy21osti/78239.pdf). This data is planned to be updated annually. Information on the latest versions can be found at https://www.nlr.gov/analysis/cambium.html.

Resources

12 resources available

  • Standard Scenarios 2020 project (Cambium data)

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  • Latest data, as of 2021

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  • This workbook contains modeled estimates of long-run marginal CO2 emission rates, derived from the High Renewable Energy Cost scenario of the 2020 Standard Scenarios.

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  • This workbook contains modeled estimates of long-run marginal CO2 emission rates, derived from the Low Renewable Energy Cost scenario of the 2020 Standard Scenarios.

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  • This workbook contains modeled estimates of long-run marginal CO2 emission rates, derived from the Mid-case of the 2020 Standard Scenarios.

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  • This file contains a mapping between ReEDS regions and the GEA regions used for reporting the LRMER in the workbook.

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  • This file contains a mapping of US ZIP codes to the GEA regions that are used for reporting the LRMER values in the workbooks.

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  • This file contains a mapping of US counties to the GEA regions used for reporting the LRMER in the workbooks.

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  • This folder contains shapefiles that describe the ReEDS regions that underlie the GEA regions used for LRMER reporting.

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  • This data is planned to be updated annually. Information on the latest versions can be found at https://www.nrel.gov/analysis/cambium.html.

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  • Standard Scenarios 2020 Report

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  • This data was produced as part of the Cambium project. For more details about the methodology, see the Cambium Documentation: Version 2020

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Complete Metadata
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description This dataset has been superseded by a new set of workbooks that can be found here: https://data.nlr.gov/submissions/183 These workbooks contain modeled estimates of long-run marginal CO2 emission rates (LRMER) for the contiguous United States. The LRMER is an estimate of the rate of emissions that would be either induced or avoided by a long-term (i.e., more than several years) change in electrical demand. It incorporates both the projected changes to the electric grid, as well as the potential for an incremental change in electrical demand to influence the structural evolution of the grid (i.e., the building and retiring of capital assets, such as generators and transmission lines). It is therefore distinct from the more-commonly-known short-run marginal, which treats grid assets as fixed. In addition to year-over-year data, the Levelized LRMER worksheet within each workbook is set up to produce a levelized long-run marginal emission rate based on user-provided inputs. These levelized LRMER values are intended for analysts to use when estimating the emissions induced (or avoided) by a long-term change in end-use electricity demand. Three future scenarios are provided in separate workbooks: A Mid-case (i.e., business-as-usual), and two scenarios with relatively higher or lower renewable energy costs. For more details on these scenarios, see the Standard Scenarios 2020 Report (https://www.nlr.gov/docs/fy21osti/77442.pdf). For more data underlying each scenario, see the Standard Scenarios 2020 project (Cambium data) at https://cambium.nlr.gov/. This data was produced as part of the Cambium project. For more details about the methodology, see the Cambium Documentation: Version 2020 (https://www.nlr.gov/docs/fy21osti/78239.pdf). This data is planned to be updated annually. Information on the latest versions can be found at https://www.nlr.gov/analysis/cambium.html.
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identifier https://data.openei.org/submissions/8227
issued 2021-08-12T22:10:01Z
keyword 
                                            [
  "CO2",
  "Cambium",
  "Long-run",
  "Marginal emissions",
  "NREL",
  "PLEXOS",
  "ReEDS",
  "greenhouse gas emissions"
]
landingPage https://data.nrel.gov/submissions/170
license https://creativecommons.org/licenses/by/4.0/
modified 2026-02-24T18:04:38Z
programCode 
                                            [
  "019:000",
  "019:002",
  "019:003",
  "019:008",
  "019:010"
]
projectNumber FY21 AOP 2.4.0.1
projectTitle Cambium
publisher 
                                            {
  "name": "National Renewable Energy Laboratory",
  "@type": "org:Organization"
}
title Long-run Marginal CO2 Emission Rates Workbooks for 2020 Standard Scenarios Cambium Data

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