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NREL's PVWatts Calculator
PVWatts is an easy to use calculator from NREL that estimates the annual energy output and levelized cost of electricity for a grid connected photovoltaic system based on system size, location, array tilt, and basic performance assumptions. It uses National Solar Radiation Databas...
NLR
Dec 31, 2024
Fast Frequency Response Concepts and BPS Reliability Needs
Recorded webinar introducing fast‑frequency‑response concepts and reliability needs for high‑IBR systems. Content covers definitions, triggers, control timelines, measurement and verification, and interactions with governor response and inertial effects. Case studies and sim...
Force, T. North American Electric Reliability Corporation
Apr 15, 2020
Igiugig’s Journey Toward Sustainability
This case study chronicles the efforts of the Igiugig Village Council, NREL, and Deerstone Consulting to transition the remote Alaska community toward sustainable energy solutions. It describes projects such as renewable microgrid installations, energy efficiency improvements, cap...
Salmon, A. et al Igiugig Village Council
Nov 30, 2022
MHKiT (Marine and Hydrokinetic Toolkit)
MHKiT is an open-source software package developed by NREL, Pacific Northwest National Laboratory (PNNL), and Sandia National Laboratories for processing, analyzing, and visualizing data from marine and hydrokinetic (MHK) energy systems. The toolkit includes modules for resource c...
NREL, P. NLR
Dec 31, 2018
Voices of Experience: Microgrids for Resiliency
This report in the 'Voices of Experience' series compiles lessons learned from utilities, communities, and developers about using microgrids to enhance resilience against grid disruptions. It covers topics such as microgrid design, technology selection, financing, regulatory consi...
NREL, S. NLR
Oct 31, 2020
Climate Data Online
Climate Data Online (CDO), operated by NOAA's National Centers for Environmental Information, offers public access to a vast archive of weather and climate data collected from thousands of stations worldwide. Users can search and download datasets covering daily, hourly, and month...
National Oceanic and Atmospheric Administration
Dec 31, 2025
Kauai Island Utility Cooperative: The Impact of Extensive PV Penetration
This case study analyzes how extensive penetration of solar photovoltaic generation has affected the Kauai Island Utility Cooperative's distribution system. It covers impacts on voltage regulation, frequency stability, and curtailment, and describes measures the utility implemente...
Lovas, T. National Rural Electric Cooperative Association
Jun 30, 2015
Energy Transitions Playbook
The Energy Transitions Playbook is one of several resources the U.S. Department of Energy’s Energy Transitions Initiative (ETI) developed to facilitate and expedite energy transitions by sharing experiences and insights from communities that are actively working toward a cleaner...
Initiative, T. U.S. Department of Energy
Sep 30, 2021
Global Horizontal Irradiance
This dataset, part of the National Solar Radiation Database version 3, provides gridded global horizontal irradiance (GHI) values for the United States. Derived from satellite observations and ground station data, the shapefile includes annual average GHI estimates for each grid ...
NLR
Feb 21, 2018
Managing and Mitigating Solar PV Corrosion
This document, developed by NARUC and the National Association of State Energy Officials (NASEO), advises state energy offices and public utility commissions on the role of clean energy microgrids. It discusses policy considerations, regulatory frameworks, funding mechanisms, and ...
Program, M. U.S. Department of Energy
Dec 31, 2025
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