A Screening Tool for Renewable Energy Projects​

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User GuideCounty Zoning Guide Incentives
​​ Ways to Use SmartDG+
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SmartDG+ is a free, online, map-based screening tool sponsored by MEA and PPRP. It is intended to help developers and officials identify promising areas for the location of new wind and solar projects in Maryland. The tool focuses on screening factors of relevance to large-scale projects (i.e. greater than 2 MW.)

In order to create SmartDG+, PPRP evaluated electrical lines throughout Maryland, gathered publicly available data on barriers to project construction, and met with county and utility officials to discuss local priorities and policies of relevance. Combining this information is intended to help everyone save time and make better decisions about where to focus further research.​

Venn diagram of Infrastructure Proximity, Renewable Resource Availability and Land Suitability Infrastructure Proximity:

  • Electricity lines

Renewable Resource Availability:

  • Viable wind speeds (wind only)

Land Suitability:

  • Protected areas
  • Flood zones
  • Land cover/land use
  • Airports
  • DOD no-go zones
  • County zoning

The linchpin of SmartDG+ is a statewide map of 1-to-4 mile-wide corridors surrounding electrical distribution and transmission lines that appear strong enough to absorb large-scale projects. Within these corridors, the tool shows areas that remain promising after various standard screens involving resource availability, land use, protected areas, and more have been applied. The screening results are shown as technology-specific data layers: Possible Areas for SOLAR; and Possible Areas for WIND.

Viewers can choose additional screens such as:

  • County-level zoning (learn more)
  • County-level protected areas
  • NAS Patuxent River Protected Areas
  • MALPF easements
  • Forested lands

PPRP reaches out annually to county officials to confirm that all zoning information in the tool is accurate and up-to-date. However, information included in SmartDG+ should not be relied upon without further verification as county information is constantly evolving. PPRP strongly recommends that anyone interested in siting a large-scale renewable energy system or facility at a specific site should contact the county or municipality where it is located. The local jurisdiction's planning or zoning department is the appropriate entity to confirm the accuracy of the zoning information and can respond to other relevant questions regarding the site.

As previously mentioned, the information within SmartDG+ is meant to serve as an initial screening tool for developers. Additional research will be necessary before development can proceed. For an example, utilities must always be consulted to determine whether a specific project can safely and economically connect to the grid.

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