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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
Power Sector Transformation Pathways: Exploring Objectives, Factors. and Technology Innovations to Inform Power Sector Pathway Decisions
The power and heating sectors are responsible for around 30% of global CO2 emissions and this share is likely to grow as countries move towards electrification of the transportation and building sectors. Therefore, enabling forward-thinking, long term strategies in the power secto...
Cox, S. et al NLR
Jan 31, 2020
Performance Evaluation and Costs of a Combined Ground Source Heat Pump and Solar Photovoltaic Storage System in an Extreme Cold Climate
This report outlines the effectiveness and economics of a ground source heat pump system installed together with solar photovoltaic panels and a battery storage system in a local community building situated in a cold climate. The community building is a tribal building located in ...
Truffer-Moudra, D. et al NLR
May 31, 2023
Clean Energy Microgrids: Considerations for State Energy Offices and Public Utility Commissions to Increase Resilience, Reduce Emissions, and Improve Affordability
This FEMP guide outlines techniques to mitigate hail damage to solar PV installations. It covers risk assessment, module selection with hail-resistant ratings, array tilt considerations, mounting structures, protective covers, and insurance considerations. The resource aims to hel...
National Association of Regulatory Utility Commissioners and National Association of State Energy Officials
Apr 30, 2023
Distributed Renewables for Arctic Energy: A Case Study
Alaska is a vast state that stretches into the Arctic Circle. Roughly 140,000 people in the state are dependent on isolated electric grids, traditionally burning expensive fossil fuels. This has negative impacts on air quality and climate. As the climate warms, fuel supply chains ...
Anderson, B. et al NLR
Dec 31, 2022
Kake Heat Pump Rate Analysis for Inside Passage Electric Cooperative
This report provides an overview of possible rate structures that can encourage beneficial electrification, with an emphasis on HPs, in Kake, Alaska. Inside Passage Electric Cooperative (IPEC), and Alaska Center for Energy and Power (ACEP) at the University of Alaska Fairbanks are...
Mathur, S. et al University of Alaska Fairbanks
Dec 31, 2020
Igiugig Site Visit Report
NREL (NREL) team conducted a site visit during January 23-25, 2019 with the Igiugig Village Council (IVC) and other stakeholders to assist the community of Igiugig in refining their long-term energy strategy. The agenda included a tour of the village, data collection, presentation...
Kilcher, L. et al NLR
Oct 31, 2021
REopt: A Platform for Energy System Integration and Optimization
REopt is a techno-economic decision support model used to optimize energy systems for buildings, campuses, communities, and microgrids. The primary application of the model is for optimizing the integration and operation of behind-the-meter energy assets. This report provides an o...
Anderson, K. et al NLR
Aug 31, 2017
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