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HEM: Holistic Electricity Model
HEM is a holistic electricity system model developed by NREL that integrates multiple modules to simulate generation, transmission, distribution, and market operations. It allows researchers to evaluate the impacts of policy changes, technology costs, and system constraints on gri...
NLR
Apr 20, 2025
ResStock Analysis Tool
The ResStock Analysis Tool developed by NREL models energy consumption and retrofit opportunities across the U.S. residential building stock. It uses statistical sampling, building physics, and utility data to simulate performance for millions of representative homes. Users can ev...
NLR
Jun 22, 2025
Community Solar Scenario Tool
The Community Solar Scenario Tool (CSST) developed by NREL allows users to model different community solar program designs and assess their impacts on subscribers and utility finances. It calculates bill savings, project revenues, and costs under various subscription structures, i...
NLR
Aug 23, 2025
Engage Energy Modeling Tool
Engage is an interactive web-based tool from NREL that enables communities to model different energy scenarios and explore pathways toward renewable energy and emissions reduction goals. Users can simulate the effects of energy efficiency, renewable generation, storage, and transp...
NLR
Mar 18, 2025
Energy Profiler Tool
NREL's Energy Profiler Tool helps state, local, and tribal governments understand their community's energy consumption patterns, costs, and associated emissions. Users can input basic data to generate customized profiles that highlight major energy users and emissions sources. The...
NLR
Aug 23, 2025
Regional Energy Deployment System
ReEDS is NREL's flagship capacity expansion model that simulates deployment of generation and transmission infrastructure across the continental United States. It incorporates resource availability, technology costs, policy constraints, and transmission limitations to project leas...
NLR
Apr 20, 2025
PRAS: Probabilistic Resource Adequacy Suite
PRAS is a modeling suite developed by NREL that performs probabilistic resource adequacy assessments for power systems. It incorporates weather variability, generator outages, and demand uncertainty to estimate metrics such as loss of load expectation (LOLE). Users can explore how...
NLR
Apr 20, 2025
Levelized Cost of Energy Calculator
This online calculator from NREL allows users to estimate the levelized cost of energy (LCOE) for a wide range of technologies, including solar, wind, storage, and conventional generation. Users input parameters such as capital cost, operating and maintenance cost, capacity factor...
NLR
Mar 30, 2026
PR-DRIFT: Puerto Rico Demand Response Impact and Forecast Tool
PR-DRIFT is an NREL-developed tool that models and forecasts the impacts of demand response programs on Puerto Rico's electric grid. It simulates how customer participation in demand response can reduce peak loads, provide ancillary services, and improve resilience. The tool helps...
NLR
Mar 11, 2025
PREESAT: Puerto Rico Energy Efficiency Scenario Analysis Tool
The Puerto Rico Energy Efficiency Scenario Analysis Tool (PREESAT) developed by NREL allows policymakers and stakeholders to model the impacts of energy efficiency measures on Puerto Rico's energy consumption and economic development. Users can explore scenarios for different sect...
NLR
Mar 18, 2025
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