Solar Inverters (Updated 1-28-2021)

Rules for Electric Meter and Service Installations (REMSI)

1/28/2021

This list of solar inverter manufacturers and model numbers has been reviewed by PPL EU and determined to satisfy the minimum requirements.

All interconnection request applications should be submitted through the 
Renewable Energy Connection web page. Complete information on the equipment, connection of facilities, and installation of equipment must be submitted for review for each project.

Unless otherwise directed by PPL EU, inverters shall be set to unity power factor.

The list consists of inverters that are both:

  1. Certified to UL 1741 Supplement A (rev. September 2016) or Supplement B (rev. August 2020)

    and

  2. Satisfy the following communication requirements:

    • Inverter shall feature a local communication interface (RS-485 or Ethernet) utilizing either the SunSpec Modbus communication protocol or the DNP3 (IEEE Std 1815) communication protocol.
      • NOTE: Currently, PPL does not support the SEP2 (IEEE Std 2030.5) communications protocol. We are working with inverter manufacturers to implement adoption of the SEP2 protocol within our service territory.

    • Inverter shall feature the ability to read the following data points via the local communication interface:
      • Real power, apparent power, reactive power, DC power, power factor (both setpoint and enable), voltage, current, and frequency.

    • Inverter shall feature the ability to manage the following grid support settings via the local communication interface:
      • Power factor setpoint, power factor setpoint enable, connect/disconnect, Volt/VAR curve Volt-VAR enable, low voltage ride through curve (LVRT), high voltage ride through curve (HVRT), low frequency ride through curve (LFRT), high frequency ride through curve (HFRT) and HFRT Enable.

     

    If you are interested in using an inverter that is not on the approved list, contact PPL: