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Considerations for Distributed Energy Resource Integration in Puerto Rico: Analytical Support for Interconnection and IEEE Std 1547-2018
This report documents collaborative efforts by several U.S. national laboratories to support Puerto Rico's integration of distributed energy resources (DER) into its electric grid. The multi-lab team provided technical analyses, grid modeling, and stakeholder engagement to develop...
Narang, D. et al NLR
Jan 31, 2021
Value Streams in Microgrids: A literature Review
Microgrids are an increasingly common component of the evolving electricity grids with the potential to improve local reliability, reduce costs, and increase penetration rates for distributed renewable generation. The additional complexity of microgrids often leads to increased in...
Stadler, M. et al Lawrence Berkeley National Laboratory
Dec 31, 2015
Geothermal Heat Pump System Technical Specifications
This FEMP document specifies technical requirements for geothermal heat pump (GHP) systems used in federal buildings. It covers system sizing, efficiency ratings, refrigerants, controls, ground loop design, installation practices, and commissioning procedures. The specifications h...
Program, M. U.S. Department of Energy
Jul 07, 2025
Microgrid Program Strategy
The Strategy development process began with microgrid experts deliberating on areas the Strategy should focus on for impactful results. These deliberations led to the development of seven strategic white papers, one for each of the six strategic RandD areas identified and one addi...
Ferreira, S. et al Sandia National Laboratories
Mar 30, 2026
7 Resources
7 Resources
Black Start of Unbalanced Microgrids Harmonizing Single and Three-Phase Grid-Forming Inverters: Preprint
As power systems are transforming with increasing penetrations of inverter-based resources (IBRs), system restoration using IBRs has drawn attention. Using distributed grid-forming (GFM) assets located near critical loads, either three-phase or single-phase, to establish microgrid...
Seo, G. et al NLR
Jul 31, 2023
High-Frequency Signature-Based Fault Detection for Future MV Distribution Grids: Preprint
Increased deployment of Distributed Energy Resources (DERs) and microgrids are significantly changing the operation of distribution grid. Increasing penetration of power electronics based DERs also raise several operational problems such as protection coordination issues, voltage ...
Velaga, Y. et al NLR
Jun 30, 2020
Cybersecurity for Distributed Energy Resources: All Hazards Approach for Grid Modernization
Distributed energy resources (DER) sit at the intersection of IoT and critical infrastructure. As we work towards clean energy and decarbonization targets, high rates of growth of DER are expected, making them an important component of generation and grid services. They have been ...
Culler, M. Idaho National Laboratory
Dec 06, 2023
Background Information on the Power Quality Requirements in IEEE Std 1547-2018
This document provides context for the power quality requirements contained in IEEE Std 1547-2018. It explains why limits on voltage regulation, flicker, harmonics, and unintentional islanding were specified, and how distributed energy resources should comply. The guide discusses ...
Ingram, M. et al NLR
Sep 30, 2021
Analysis of Microgrid Performance, Reliability, and Resilience (AMPeRRe) Computational Model: Novel Analytical Model to Forecast the Outcomes of Installation Power Grids
Federal facilities, industrial areas, academic campuses, and communities are working to incorporate greater renewable energy sources and energy storage in their power infrastructure. While renewable sources of energy can—and do—support several facilities, uncertainty still exi...
Bozada, T. et al
Nov 30, 2024
Power-Hardware-in-the-Loop Interfaces for Inverter-Based Microgrid Experiments Including Transitions
Microgrids continue to proliferate, particularly those that rely on inverter-based resources as the microgrid's voltage and frequency leader. Hardware-in-the-loop simulations can de-risk microgrid deployments, and therefore we need power hardware-in-the-loop (PHIL) interfaces for ...
Pratt, A. et al NLR
Dec 31, 2022
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