Regional Energy Deployment System (ReEDS) Model Documentation: 2025

The Regional Energy Deployment System (ReEDS) model is a capacity expansion and dispatch model that is primarily used for the contiguous U.S. electric power sector. The model relies on system-wide least cost optimization to estimate the type and location of future generation and transmission capacity. This document describes details of how the model is formulated, how it functions, and many of the key inputs.. Authors: Avraam, Charalampos [National Renewable Energy Lab., Golden, CO (United States)]; Ayad, Abdelrahman [National Renewable Energy Lab., Golden, CO (United States)] (ORCID:0000000241883001); Brown, Patrick [National Renewable Energy Lab., Golden, CO (United States)]; Carag, Vincent [National Renewable Energy Lab., Golden, CO (United States)]; Chen, Yunzhi [National Renewable Energy Lab., Golden, CO (United States)]. DOE Contract: AC36-08GO28308. Subjects: 15 GEOTHERMAL ENERGY; 97 MATHEMATICS AND COMPUTING; ReEDS; capacity expansion; electricity; energy planning; long-term planning; optimization