"Utilities and state agencies have created 39 EV, load, and distributed energy hosting capacity analysis maps serving 24 states and the District of Columbia"

Map of states with at least one public hosting capacity map useful for integrating clean energy into utility distribution systems. As of December 2023, 39 public maps are available in 24 states and D.C. Shading means that at least one utility within the state has a public hosting capacity map, but does not necessarily indicate complete coverage.

The Benefits of Hosting Capacity Maps

The transition to a more sustainable transportation system – including the widespread adoption of electric vehicles (EVs) – will put new and increased demands on our nation’s electricity grids. Electric utilities working to expand their capacity to meet America’s future energy needs use hosting capacity maps to describe their distribution system’s ability to add electrical generation capacity or end-use loads at specific grid locations. 

Utilities, developers, and other stakeholders can use hosting capacity maps to better plan and site energy infrastructure. Hosting capacity maps provide greater transparency about where additional distributed energy resources (DERs), or new loads such as EV chargers, can be readily connected. Specifically, hosting capacity maps identify where DERs can alleviate grid constraints or where an upgrade may be required. For example, EV companies can use the maps to identify new areas to expand their charging station networks more quickly and cost-effectively. While the information in hosting capacity maps does not address all the interconnection questions for individual sites, they can indicate relative levels of investment needed.

Today, utilities across the United States offer 39 unique maps covering 24 states and the District of Columbia, below. Users are encouraged to work closely with their utilities to determine sites leveraging available grid capacity. If a utility does not publish a hosting capacity map, they can still consult with customers about adding new loads or clean energy into their distribution network. To further connect, states, communities, fleets, and developers can use the NEVI U-Finder tool to help find and contact their local utility partners for programs and incentives.

A screenshot of a map, showing EV capacity in and around Syracuse, New York.

Example of hosting capacity map for EVs, from National Grid's New York System Data Portal

Public Hosting Capacity Maps by State and Utility

StateUtility

Application (Stated By Utility)

Electric Vehicle (EV)
Distributed Generation or Energy Resource (DG, DER)

ArizonaGarkane EnergyAsset Map
CaliforniaLos Angeles Department of Water and PowerLoad
CaliforniaPacific Gas & Electric account requiredDG and Load
CaliforniaSan Diego Gas & Electric account requiredDER
CaliforniaSouthern California EdisonDG and Load
CaliforniaCalifornia Energy Commission, EVSE Deployment and Grid Evaluation (EDGE) ToolEV
ColoradoXcel Energy. Public Service Company of ColoradoDG
ConnecticutEversourceEV
ConnecticutUnited Illuminating (Avangrid)EV
DelawareDelmarva Power (Pepco Holdings, Exelon)EV
District of ColumbiaPotomac Electric Power Co. (Pepco Holdings, Exelon)EV
HawaiiHawaiian ElectricDG
IdahoAvistaDER
IllinoisCommonwealth Edison (COMED), ExelonEV
IllinoisAmerenEV
MaineCMPLoad
MaineVersant PowerDG
MarylandPepco Holdings, ExelonEV
MassachusettsNational GridDER and EV
MassachusettsEversourceDG
MassachusettsUnitilDER
MichiganConsumers EnergyDG
MichiganDTEDER
MinnesotaXcel EnergyDG and Load
NevadaNV Energy account requiredGeneration and Load
New HampshireEversourceDG
New HampshireNew Hampshire Electric Co-opDG
New JerseyOrange & Rockland Electric CompanyDER, Storage and EV
New JerseyJersey Central Power & Light (JCP&L) (FirstEnergy)EV
New JerseyPublic Service Electric & Gas Company (PSE&G)EV
New JerseyAtlantic City Electric (Pepco Holdings, Exelon)EV
New YorkCentral Hudson Gas & ElectricStorage
New YorkCon EdisonDG, Storage and EV
New YorkNational GridDG, Storage and EV
New YorkNYSEG and RG&E (AvanGrid)EV
New YorkOrange & Rockland Electric CompanyDG, Storage and EV
North CarolinaDominion EnergyEV
OregonPacific PowerDG
OregonPortland General ElectricDG
Rhode IslandRhode Island EnergyDER and EV
UtahGarkane EnergyAsset Map
VermontBurlington ElectricDG
VermontGreen Mountain PowerDG
VirginiaDominion EnergyEV
WashingtonPuget Sound EnergyDER
WashingtonAvistaDER

Updated: January 2024

Note: DOE is providing this list for information purposes only. It is important for users to read the instructions on each hosting capacity map to understand how that map should be used. 

This table will be updated as additional information is made available.  Please contact EVGrid@hq.doe.gov for additions and corrections.

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