To help agencies assess the viability of on-site renewable energy projects, the Federal Energy Management Program (FEMP) offers a variety of renewable energy resource maps and screening tools. Renewable energy is available throughout the United States, but varies greatly depending on exact location and micro-climate. Before initiating a renewable energy project, resources in your area must be measured and verified.
The following renewable energy resource maps, calculators, and screening tools are a good place to start, but it is important to consult an expert for a professional evaluation before implementing renewable energy projects.
- FEMP Screening Map: Interactive map examines the viability of three solar technologies in the United States with a high-level annualized economic calculation, with and without potential savings from available renewable energy incentives at the state and federal level. The tool suggests technology costs, calculates performance data, and calculates the economic value, such as levelized cost of energy ($/kWh), of a project using geospatial site data.
- NREL Renewable Energy Maps: Collection of maps from the National Renewable Energy Laboratory (NREL) detail renewable energy resources across the United States, including biomass, geothermal, hydrogen, marine and hydrokinetic, solar, and wind. International maps are also available.
- PVWatts Calculator: Estimates the energy production and cost of energy of grid-connected photovoltaic (PV) energy systems throughout the world to easily develop estimates of the performance of potential PV installations.
- FEMP Solar Hot Water System Calculator: Estimates the solar hot water system size that will work best in a federal facility and how much the system will cost.
- NREL Renewable Energy Optimization (REopt) Tool: Identifies and prioritizes renewable energy projects at a single site or across a portfolio of sites in multiple cities, states, or countries, each with its own energy requirements, resources, goals, and constraints.
- REopt Screening Analysis: Service available to FEMP or NREL clients, this analysis uses the REopt tool to identify potential renewable energy opportunities for single or multiple sites. To conduct a REopt prescreening analysis, download the Excel file, complete the fields, and email it to NREL with "Request for REopt Prescreening Analysis" in the subject line. NREL will contact you within three business days to confirm receipt of data and to discuss the schedule for analysis results.