Flexible Operation of Natural Gas Power Plants in Texas: Startup and Shutdown Durations and Nitrogen Dioxide Emissions
This dataset provides insights into historical flexible operation of natural gas power plants in Texas, with a focus on startup and shutdown events. The dataset includes tables summarizing startup and shutdown durations as well as nitrogen oxide (NOx) emission factors during these events, and compares these emission factors with those observed during all other operating phases (referred to here as ?steady-state operation?). The dataset is derived using the U.S. Environmental Protection Agency (EPA)?s Clean Air Markets Program Data (CAMPD). Historical hourly data from 2015?2024, including electricity generation, heat input, and NOx emission factors, are used for natural gas combined cycle units, combustion turbine units, and steam turbine units in Texas.This work was authored by the National Laboratory of the Rockies, operated by the Alliance for Energy Innovation, LLC, for the U.S Department of Energy (DOE) under contract no. DE-AC36-08GO28308. Funding was provided by the U.S. Department of Energy as part of its Grid Modernization Laboratory Consortium, a strategic partnership between DOE and the national laboratories to bring together leading experts, technologies, and resources to collaborate on the goal of modernizing the nation?s grid. The views expressed in the dataset do not necessarily represent the views of the DOE or the U.S. Government.
Citation Formats
TY - DATA
AB - This dataset provides insights into historical flexible operation of natural gas power plants in Texas, with a focus on startup and shutdown events. The dataset includes tables summarizing startup and shutdown durations as well as nitrogen oxide (NOx) emission factors during these events, and compares these emission factors with those observed during all other operating phases (referred to here as “steady-state operation”). The dataset is derived using the U.S. Environmental Protection Agency (EPA)’s Clean Air Markets Program Data (CAMPD). Historical hourly data from 2015–2024, including electricity generation, heat input, and NOx emission factors, are used for natural gas combined cycle units, combustion turbine units, and steam turbine units in Texas.This work was authored by the National Laboratory of the Rockies, operated by the Alliance for Energy Innovation, LLC, for the U.S Department of Energy (DOE) under contract no. DE-AC36-08GO28308. Funding was provided by the U.S. Department of Energy as part of its Grid Modernization Laboratory Consortium, a strategic partnership between DOE and the national laboratories to bring together leading experts, technologies, and resources to collaborate on the goal of modernizing the nation’s grid. The views expressed in the dataset do not necessarily represent the views of the DOE or the U.S. Government.
AU - Li, Yun
A2 - Ravi, Vikram
A3 - Heath, Garvin
A4 - Avraam, Charalampos
DB - Open Energy Data Initiative (OEDI)
DP - Open EI | National Laboratory of the Rockies
DO -
KW - natural gas
KW - Nitrogen Oxide
KW - Texas
KW - Flexible Operation
LA - English
DA - 2026/03/26
PY - 2026
PB - National Laboratory of the Rockies
T1 - Flexible Operation of Natural Gas Power Plants in Texas: Startup and Shutdown Durations and Nitrogen Dioxide Emissions
UR - https://data.openei.org/submissions/8646
ER -
Li, Yun, et al. Flexible Operation of Natural Gas Power Plants in Texas: Startup and Shutdown Durations and Nitrogen Dioxide Emissions. National Laboratory of the Rockies, 26 March, 2026, NREL. https://data.nlr.gov/submissions/322.
Li, Y., Ravi, V., Heath, G., & Avraam, C. (2026). Flexible Operation of Natural Gas Power Plants in Texas: Startup and Shutdown Durations and Nitrogen Dioxide Emissions. [Data set]. NREL. National Laboratory of the Rockies. https://data.nlr.gov/submissions/322
Li, Yun, Vikram Ravi, Garvin Heath, and Charalampos Avraam. Flexible Operation of Natural Gas Power Plants in Texas: Startup and Shutdown Durations and Nitrogen Dioxide Emissions. National Laboratory of the Rockies, March, 26, 2026. Distributed by NREL. https://data.nlr.gov/submissions/322
@misc{OEDI_Dataset_8646,
title = {Flexible Operation of Natural Gas Power Plants in Texas: Startup and Shutdown Durations and Nitrogen Dioxide Emissions},
author = {Li, Yun and Ravi, Vikram and Heath, Garvin and Avraam, Charalampos},
abstractNote = {This dataset provides insights into historical flexible operation of natural gas power plants in Texas, with a focus on startup and shutdown events. The dataset includes tables summarizing startup and shutdown durations as well as nitrogen oxide (NOx) emission factors during these events, and compares these emission factors with those observed during all other operating phases (referred to here as ?steady-state operation?). The dataset is derived using the U.S. Environmental Protection Agency (EPA)?s Clean Air Markets Program Data (CAMPD). Historical hourly data from 2015?2024, including electricity generation, heat input, and NOx emission factors, are used for natural gas combined cycle units, combustion turbine units, and steam turbine units in Texas.This work was authored by the National Laboratory of the Rockies, operated by the Alliance for Energy Innovation, LLC, for the U.S Department of Energy (DOE) under contract no. DE-AC36-08GO28308. Funding was provided by the U.S. Department of Energy as part of its Grid Modernization Laboratory Consortium, a strategic partnership between DOE and the national laboratories to bring together leading experts, technologies, and resources to collaborate on the goal of modernizing the nation?s grid. The views expressed in the dataset\ do not necessarily represent the views of the DOE or the U.S. Government.},
url = {https://data.nlr.gov/submissions/322},
year = {2026},
howpublished = {NREL, National Laboratory of the Rockies, https://data.nlr.gov/submissions/322},
note = {Accessed: 2026-05-19}
}
Details
Data from Mar 26, 2026
Last updated Apr 9, 2026
Submitted Mar 26, 2026
Organization
National Laboratory of the Rockies
Contact
Yun Li
Authors
Original Source
https://data.nlr.gov/submissions/322Research Areas
Keywords
natural gas, Nitrogen Oxide, Texas, Flexible OperationDOE Project Details
Project Name Capturing the Distribution of Costs and Benefits in Electricity System Planning and Operations
Project Number This is a cross-cut project with multiple DOE funding projects: CPS 41453 (OE), CPS 41440 (EGI), STARS 3000035 (FECM), and GDO (GMLC Topic 4).

