Maryland Utility Companies

Maryland Solar Utilities and How They Work with Homeowners to Go Solar 

Maryland’s utilities are required by law allow homeowners the ability to connect their home’s solar electric system to the utility.  In doing so, electric users can send unused solar electricity generated back into the grid and earn a credit on their electric bill.  At night, when the sun is not shining and the solar electric system is not producing electricity, electric users get their needed power from their utility.  Homeowners get the best of both worlds – they are always connected to the grid and get lower electric bills by going solar.  Trinity Solar handles all the work required to connect you to your utility.  

Learn more about what each utility is doing and their specific programs on how to get connected to the grid.

Maryland’s Interconnection Rules

The rules governing connecting to the grid are written in the Code of Maryland Regulations (COMAR).  For the exact language on the law, visit http://www.dsd.state.md.us/comar/SubtitleSearch.aspx?search=20.50.09.*.

Maryland’s Utilities

Maryland still gets nearly 30% of it’s electricity from coal and over 40% from nuclear energy.  As a state, we can do better. 

Maryland’s utilities are governed by Maryland Public Service Commission.  To participate in the net metering programs, interconnection applications are required to be submitted and approved by the utility.  After approval and after the system is installed, final approval will be requested by the utility.  Once they switch out your electric meter to a digital net meter, the solar electric system can be turned on and start producing electricity. 

Visit the U.S. Energy Information Administration to learn more about about how Maryland uses the electricity it produces.Maryland Energy Mix

Maryland Utility – Baltimore Gas & Electric (BG&E)

BG&E’s all-in electric costs range between $0.13 – $0.145 per kWh.  It takes approximately 20 days for BG&E to approve of the installation and provide “permission to operate”.     

BG&E services the following counties:
  • Baltimore City, Baltimore County, Anne Arundel County, Howard County, Carroll County, Harford County

Their office location is: 

1068 N. Front Street
Baltimore, Maryland 21202

Their interconnection process can be found at: https://www.bge.com/MyAccount/MyService/Pages/ApplyingforInterconnection.aspx

Maryland Utility – Potomac Electric Power Co. (PEPCO)

PEPCO’s all-in electric costs range between $0.14 – $0.15 per kWh.  It takes approximately 30 days for PEPCO to approve of the installation and provide “permission to operate”.     

PEPCO services the following counties:
  • Montgomery County and Prince George’s.  See map.

Their office location is: 

8300 Old Marlboro Pike,
Upper Marlboro, MD 20772

Their interconnection process can be found at: http://www.pepco.com/my-home/save-money-and-conserve-energy/renewable-energy/green-power-connection/md/maryland-net-energy-metering-and-small-generator-interconnections/?LangType=1033

Maryland Utility – Southern Maryland Energy Cooperative (SMECO)

SMECO’s all-in electric costs range between $0.12 – $0.135 per kWh.  It takes approximately 14 days for SMECO to approve of the installation and provide “permission to operate”.     

SMECO services the following counties:
  • Calvert County, Charles County, and St. Mary’s County

Their office location is: 

15065 Burnt Store Road
Hughesville, MD 20637-1937
https://www.smeco.coop/ 

Their interconnection process can be found at: https://www.smeco.coop/services/net-metering 

Maryland Utility – Delmarva Power & Light (DPL)

Delmarva’s all-in electric costs range between $0.14 – $0.155 per kWh.  It takes approximately 30 days for Delmarva to approve of the installation and provide “permission to operate”.     

Delmarva services much of the Eastern shore overlapping counties with Choptank. 


Their office location is: 

5 Collins Drive, MS 84CP22
Carneys Point, New Jersey 08069

Their interconnection process can be found at: http://www.delmarva.com/maryland-interconnection.aspx.

Maryland Utility – Potomac Edison

Potomac Edison’s all-in electric costs range between $0.095 – $0.105 per kWh.  It takes approximately 30 days for Potomac Edison to approve of the installation and provide “permission to operate”.     

Potomac Edison services the following counties:
  • Allegany County, Frederick County, Garrett County, Montgomery County, Washington County

Their office location is: 

10802 Bower Avenue
Williamsport, Maryland 21795-3016

Their interconnection process can be found at: https://www.firstenergycorp.com/content/fecorp/feconnect/potomacedison/retail-md.html.  

Maryland Utility – Choptank Electric Cooperative

Choptank’s all-in electric costs range between $0.13 – $0.14 per kWh.  It takes approximately 30 days for Choptank to approve of the installation and provide “permission to operate”.     

Choptank services parts of the Eastern shore overlapping counties with Delmarva. 


Their office location is: 

10384 River Rd,
Denton, MD 21629

Their interconnection process can be found at: http://www.choptankelectric.com/content/renewable-energy-net-metering