Renewable Energy Interconnections

The following information shall be used to properly apply to the Hagerstown Light Department (HLD) for the interconnection of renewable energy facilities (solar, wind, battery storage).

As of January 1st, 2024, the Maryland Public Service Commission (MDPSC) requires the installation of "Smart" inverters on all renewable energy interconnections.  "Smart" inverters shall be programmed using the Minimum Statewide Default Standard (MSDS) found on the MDPSC's webpage:  SMALL GENERATOR INTERCONNECTION PROCESS SUMMARY.

An interconnection packet shall also be completed and submitted to the HLD, the Level 1 Interconnection Packet can be found here: LEVEL 1 RENEWABLE ENERGY FACILITY INTERCONNECTION PACKET

For Level 2 and up interconnection requests, contact the HLD Engineering Dept. at 301-790-2600.