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  1. Home
  2. RE-Powering America's Land
  3. How to Identify Sites
  4. RE-Powering Mapper

1. Introduction to the RE-Powering Mapper

The RE-Powering Mapper (Mapper) provides federal and state data for over 190,000 brownfields, landfills, mine sites and other contaminated lands (collectively referred to as “RE-Powering sites” in this document) to help users identify sites for renewable energy development. Sites have been prescreened for renewable energy potential using criteria from the National Renewable Energy Lab (NREL). Please note: the sites were not evaluated for land use constraints or current conditions. Additional research and site-specific analyses are needed to verify viability for renewable energy project development at a given site.[2]

This user guide and data documentation accompanies the EPA RE-Powering America’s Land Mapper 3.0 tool. The RE-Powering Mapper is a Web-based application that provides location data for RE-Powering sites that were collected from state and federal sources and pre-screened for renewable energy potential. A data layer (points) is provided with this renewable energy screened data. In addition to the point layer, the Mapper has additional supporting layers including Superfund site polygons, tribal boundaries, demographic information, roads, transmission lines, substations, solar radiance, wind speed, biomass feedstock and others.

Users can filter on multiple attributes to focus on the desired geographic scale, project size and/or distance to substations, among other details. A list of all attributes associated with the data layers can be found in Appendix A: Re-Powering Screened Sites Attribute Table Details. The Mapper application includes several functional tools/widgets that are explained in Section 4: Using the Mapper Functions.

The data points for RE-Powering sites are accessible through the Mapper and available for download from the Mapper landing page.

For more information about data sources and the screening process, please see Section 5: Data Documentation for Mapping and Screening Criteria for Renewable Energy Generation Potential on EPA- And State-Tracked Sites.

Table of Contents

  • 1. Introduction to the RE-Powering Mapper
  • 2. Quick Start
  • 3. Mapper Elements
  • 4. Using the Mapper Functions
    • 4.1 Opening the Mapper
    • 4.2 Getting Around the Mapper
      • 4.2.1 How to Access Information About the Mapper
      • 4.2.2 Turning Data Layers on and Off
      • 4.2.3 Accessing the Attribute Table
      • 4.2.4 Changing the Background
      • 4.2.5 Zoom
      • 4.2.6 Home
    • 4.3 Selecting Sites
      • 4.3.1 Filter Tool
        • 4.3.1.1 Clearing the Filters
      • 4.3.2 Predefined Queries Tool
      • 4.3.3 Search Tool
      • 4.3.4 Selection Tool
      • 4.3.5 Examples of How to Find Sites
    • 4.4 Adding Data to the Mapper
    • 4.5 Printing and Exporting Data
      • 4.5.1 Printing Data
      • 4.5.2 Exporting Data
    • 4.6 Measuring Features
      • 4.6.1 Example of Taking a Measurement
    • 4.7 Bookmarking
    • 4.8 Read Pop-up Box for Site Information Summary
    • 4.9 Data Layers Included
    • 5.0 Data Documentation for Mapping and Screening Criteria for Renewable Energy Generation Potential on EPA- And State-Tracked Sites
      • 5.1 Overview
      • 5.2 Data, Criteria and Methodology
        • 5.2.1 Site Information Datasets
        • 5.2.2 EPA Datasets
        • 5.2.3 State Agencies
        • 5.2.4 State-Tracked Abandoned Mine Lands Datasets
        • 5.2.5 State-Tracked Contaminated Site Datasets
      • 5.3 Screening Criteria
      • 5.4 State Policies
      • 5.5 Screening Methodology and Constraints
      • 5.6 Screening Datasets
        • 5.6.1 National Renewable Energy Laboratory (NREL) Data
        • 5.6.2 Census Data
        • 5.6.3 Homeland Infrastructure Foundation Level Data (HIFLD) Open Data
        • 5.6.4 Southern Methodist University (SMU) Data
        • 5.6.5 ESRI Data
        • 5.6.6 University of Alaska
    • Appendix A: Re-Powering Screened Sites Attribute Table Details
    • Appendix B: Renewable Energy Technology Basics
      • Solar
      • Wind
      • Biomass
      • Geothermal
  • Next Section
  • Table of Contents

Footnotes

2 The RE-Powering Mapper and associated documents are provided solely as general information on screening potentially or formerly contaminated lands, landfills and mine sites for renewable energy potential. It does not address all information, factors or considerations that may be relevant in a particular situation. Results do not reflect an endorsement or recommendation for development potential by EPA. References to third-party publications, websites, commercial products, process or services by trade name, trademark, manufacturer, or otherwise, are for informational purposes only. No endorsement or recommendation should be inferred and is not implied. EPA, NREL and the United States Government do not endorse any non-federal product service or enterprise.
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RE-Powering America's Land

  • What is RE-Powering?
    • What are the Advantages of RE-Powering?
    • Questions? Contact a team member
  • Tracking Matrix
  • Benefits Matrix
    • Success Stories
  • How to Identify Sites
    • RE-Powering Mapper
      • Introduction to the RE-Powering Mapper
      • Quick Start
      • Mapper Elements
      • Using the Mapper Functions
      • Data Documentation
      • Appendix A
      • Appendix B
  • How to Develop Sites
    • Pre-Screening
    • Site Conditions and Feasibility
    • Design and Development
  • Training and Webinars
Contact Us About RE-Powering America's Land
Contact Us About RE-Powering America's Land to ask a question, provide feedback, or report a problem.
Last updated on July 24, 2025
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