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The NREL Annual Technology Baseline (ATB) provides a consistent set of technology cost and performance data for energy analysis. The ATB electricity and transportation datasets are freely available.

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To inform electric and transportation sector analysis in the United States, each year NREL provides a robust set of modeling input assumptions for energy technologies (the Annual Technology Baseline) and a diverse set of potential electricity generation futures or modeling scenarios (Standard Scenarios). 

The ATB is a populated framework to identify technology-specific cost and performance parameters or other investment decision metrics across a range of fuel price conditions as well as site-specific conditions for electric generation technologies at present and with projections through 2050.

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