Long-run Marginal Emission Rates for Electricity - Workbooks for 2021 Cambium Data

These workbooks contain modeled estimates of long-run marginal 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.

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.

There are two workbooks that supply the data at two different geographic resolutions: states and GEA regions (20 regions that are similar to, but not exactly the same as, the US EPA's eGRID regions).

For more data underlying these emissions factors, see the Cambium 2021 project at https://cambium.nrel.gov/. For more details on the inputs into the scenarios available in the workbooks, see the Standard Scenarios 2021 Report (https://www.nrel.gov/docs/fy22osti/80641.pdf).

This data was produced as part of the Cambium project. For more details about the methodology, see the Cambium Documentation: Version 2021 (https://www.nrel.gov/docs/fy22osti/81611.pdf).

This data is planned to be updated annually. Information on the latest versions can be found at https://www.nrel.gov/analysis/cambium.html.
4 Data Resources
Name Size Type Resource Description History
LRMER Workbook: GEA Regions 26.12 MB Data This workbook contains modeled estimates of long-run marginal emission rates, reported for GEA regions.
LRMER Workbook: States 56.1 MB Data This workbook contains modeled estimates of long-run marginal emission rates, reported for states.
Shapefiles 58.18 MB Archive This folder contains shapefiles that describe the ReEDS regions that underlie the GEA regions used for LRMER reporting.
ReEDS Region Mappings 1.47 KB Data This file contains a mapping between ReEDS regions and the GEA regions used for reporting the LRMER in the workbook.
Author Information
Pieter Gagnon, National Renewable Energy Laboratory, ORCID iD: 0000-0002-4006-1719
Elaine Hale, Grid Planning and Analysis Center, ORCID iD: 0000-0003-2571-0386
Wesley Cole, Grid Planning and Analysis Center, ORCID iD: 0000-0002-9194-065X
Cite This Dataset
Gagnon, Pieter; Hale, Elaine; Cole, Wesley (2022): Long-run Marginal Emission Rates for Electricity - Workbooks for 2021 Cambium Data. National Renewable Energy Laboratory. 10.7799/1838370
About This Dataset
183
10.7799/1838370
Public
09/16/2022
DOE Project
Cambium
Facilities
High Performance Computing Center (HPC)
Funding Organization
Department of Energy (DOE)
Sponsoring Organization
USDOE Office of Energy Efficiency and Renewable Energy (EERE), Strategic Priorities and Impact Analysis (EE-61)
Research Areas
Buildings Efficiency
Energy Analysis
Energy Systems Integration
Grid Modernization
License
View License
Digital Object Identifier
10.7799/1838370