The Federal Energy Management Program (FEMP) offers resources to help federal agencies plan and implement distributed energy projects.
Also see FEMP's collections of case studies, publications, and tools.
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REopt helps federal agencies accomplish their missions by evaluating energy generation, storage, and electrification solutions and identifying the optimal combination of energy technologies, system sizing, and operations for a site.May 16, 2025 -
Compares the combination of capital costs, operations and maintenance, performance, and fuel costs
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Tool helps agencies manage existing solar photovoltaic systems, benchmark performance, manage needed repairs, and adopt ongoing best practices.May 14, 2025 -
Maps allow users to explore U.S. renewable energy resources including biomass, geothermal, hydrogen, marine and hydrokinetic, solar, and wind.
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Examines the viability of three solar technologies in the U.S. with a high-level annualized economic calculation -
Estimates the energy production and cost of energy of grid-connected photovoltaic (PV) energy systems throughout the world.
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Customizable template for federal government agencies seeking the construction of one or more on-site solar PV systems.May 14, 2025 -
A one-stop-shop of utility offerings that enables federal agencies to align their energy strategies with federal mandates.March 27, 2025
REopt User Guides
Includes detailed user manual, user forum, tutorials, and recorded webinars.
Documents
Also see:
- Net Zero Energy, Water, and Waste Handbooks
- Army Net Zero: Guide to Renewable Energy Conservation Investment Program (ECIP) Projects
- Best Practices for Operation and Maintenance of Photovoltaic and Energy Storage Systems, 3rd Edition
- Distributed Energy Technologies for Resilience and Cost Savings presentation
- Renewing Our National Parks.
Fact Sheets
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Fact sheet describes how the Federal Energy Management Program helps agencies implement energy savings performance contract energy sales agreements. -
Fact sheet describes evaluating and optimizing a PV system on the Mickey Leland Federal Building.
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Fact sheet provides an overview and actionable next steps in the microgrid implementation process.
Islanding a Microgrid
Animation simulates grid-connected and islander energy flows among distributed energy resources at a military base.
Also see:
- Case Study: Mobile Photovoltaic System at Bechler Meadows Ranger Station, Yellowstone National Park
- REopt Screenings Catalyze Development of Hundreds of Megawatts of Renewable Energy for Federal Agencies
- ESPC ESA Case Study: Energy Affordability at the National Institute of Standards and Technology
- ESPC ESA Case Study: Energy Affordability at the Drug Enforcement Administration