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Reliability Primer
This primer provides an overview of the Federal Energy Regulatory Commission’s (FERC’s) role in overseeing the reliable operation of the nation’s bulk power system, i.e., the interconnected electric grid. In order to understand FERC’s reliability program, it is useful to f...
Federal Energy Regulatory Commission
Apr 22, 2020
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
Distribution System Infographic
Produced by Pacific Northwest National Laboratory, this infographic visually explains the major components of an electric distribution system from substations and feeder lines to transformers, switches, and customer meters. It shows how electricity is routed from the transmission ...
Initiative, M. U.S. Department of Energy
Dec 31, 2025
Geothermal Prospector
The Geothermal Prospector is an interactive map application developed by NREL to help users evaluate geothermal resource potential. It overlays geothermal resource layers such as heat flow, temperature at depth, hydrothermal reservoirs, and enhanced geothermal system favorability ...
NLR
Jul 28, 2022
FERC Order No. 2222 Explainer: Facilitating Participation in Electricity Markets by Distributed Energy Resources
This explainer from the Federal Energy Regulatory Commission (FERC) summarizes Order No. 2222, which requires regional transmission organizations and independent system operators to remove barriers that prevent distributed energy resources (DER) from participating in wholesale mar...
Federal Energy Regulatory Commission
Jan 22, 2025
Wind Geospatial Data Tools
NREL offers a suite of geospatial data tools to aid in wind energy planning. These include interactive maps and analytical applications that integrate wind resource layers with land ownership, environmental exclusions, and infrastructure data. Tools such as the Wind Prospector all...
NLR
Mar 25, 2025
The Distributed Energy Resources Customer Adoption Model (DER-CAM)
DER CAM is a decision support model developed by Lawrence Berkeley National Laboratory to identify optimal combinations of distributed energy resources (e.g., solar PV, battery storage, CHP, and demand response) for buildings or multi-energy microgrids. Given load profiles, utilit...
Laboratory, N. Lawrence Berkeley National Laboratory
Dec 31, 2024
Utility Grid Operator Resources for Future Power Systems Webinar Series
With funding from the U.S. Department of Energy's Office of Policy, NLR hosted a webinar series for utility engineers, planners, operators, and industry leaders to gain insights from experts, explore cutting-edge research, and participate in Q&A sessions.
Mendoza Carrilo, I. et al NLR
Jun 04, 2025
9 Resources
9 Resources
Advanced Distributed Wind Turbine Controls Series
Documents and analyses that detail control strategies for distributed wind to provide services beyond energy. Using a reference campus model, the resources cover isolated-grid operation, fault-ride-through in grid-connected deployments, and support for microgrid transitions and bl...
Anderson, B. et al NLR
Dec 31, 2021
4 Resources
4 Resources
Universal Passive Synchronization Method for Grid-Forming Inverters Without Mode Transition
Power systems are transforming with increasing levels of inverter-based resources (IBRs). This transformation requires critical roles of grid-forming (GFM) inverters replacing synchronous generators for bulk power system stabilization and ancillary services, also allowing flexible...
Chang, H. et al NLR
Dec 31, 2022
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