Interconnection

The Maine Public Utilities Commission has issued rules and procedures for Small Generator Interconnections under Chapter 324.  These rules and procedures establish statewide standards for the interconnection of small renewable energy facilities to the energy grid.  The purpose of these rules and procedures is to increase the efficiency of the interconnection process, encourage the increased use of renewable energy and distributed generation.  We have provided links to the forms and agreements that need to be completed in order to begin the process.

For an overview of the requirements, see CMP’s Sch B  -Transmission & Distribution Interconnection Requirements for Generation, also known as "The Blue Book". 

Due to COVID-19 protocols, CMP will only be accepting electronic submissions of all interconnection applications.  Please see temporary policies in place for specific interconnection levels further down on this webpage.

Chapter 324

• Please use the following link to obtain a copy of Chapter 324.

https://www.maine.gov/mpuc/legislative/rules/part3-electric.shtml
 

• Please NOTE Application Fees Per Chapter 324:
  • All Level 1 and Level 2 Applicants, please click here to access CMP’s COVID-19 temporary policy for Levels 1 and 2. This policy is in effect until further notice.
  • Level 1 Application = $100 
  • Level 2 Application = $100 + $2 per kW
  • All Level 3 and Level 4 Developers, please click here to access CMP’s COVID-19 temporary policy for Levels 3 and 4.  This policy is in effect until further notice.
  • Level 3 Application = $100 + $3 per kW
  • Level 4 Application = $3,000
     
• For commercial customers submitting applications, please provide your tax id number
• As required by order of the Maine Public Utilities Commission, Small Generator Interconnection Applications will be evaluated under applicable screening criteria based on  the overall AC generation capacity of the customer-generation facility at the point of interconnection.
• Please use the following link to access the most recent list of Central Maine Power’s Distribution Interconnection projects:
  Central Maine Power MPUC Chapter 324 Interconnection Project List
• Monthly CMP Chapter 324 Waiver Report – March 2021
• CMP T-GFOV Determination Listing
• CMP-Inverter-Based-DER-Generation-Dynamics-Modeling-Guidance-Document-20
• ISO New England compliance bulletin mod 032
• Chapter 324 Transmission FAQ
• Monthly Developer MPUC Process Presentation

CMP Interconnection Application Request Portal 

• Public Portal 
• Developers Guide to the Portal 

Monthly CMP Interconnections Question and Answer Webinar

Have questions about the Maine PUC Chapter 324 Level 4 interconnection process?  Please join us the third Tuesday of every month from 1:00 – 2:00 PM for our monthly CMP Interconnections Question and Answer Session.  The hour begins with a short PowerPoint presentation on the interconnection process, followed by a 45 minute question and answer session for attendees. 

Interested in attending?  Just send us an email at cmp.transmissionservices@cmpco.com and we will forward you a WebEx invitation for the next available Q&A session.

Forms and Agreements

You can access individual documents below in order to begin the process:

• Forms and Agreements 1: Definitions
• Forms and Agreements 2 - Level 1: Application for Certified, Inverter-Based Generating Facilities not greater than 25 kW
• Forms and Agreements 3 - Level 1:  Interconnection Agreement
• Forms and Agreements 4 - Levels 2, 3 & 4:  Interconnection Application
• Forms and Agreements 5 - Levels 2, 3, & 4:  Interconnection Agreement
• Forms and Agreements 6:  Certificate of Completion
• Forms and Agreements 7:  Feasibility, Impact and Facilities Study Agreements
• Forms and Agreements 8:  Interconnection System Impact Study Agreement
• Forms and Agreements 9:  Interconnection Facilities Study Agreement

Process Overview by Level

• Level 1
• Level 2 (Coming Soon)
• Level 3 (Coming Soon)
• Level 4 (Coming Soon)
  • Communications Scheme Diagram (kWh Only)
  • Communications Scheme Diagram (Tariff Only)

To request additional information concerning the process, please contact 207.629.2356.

Distributed Generation Developers Guide

The "Distributed Generation Developers Guide: From Interconnection Application to Commission and Energization" is written by DG project managers to provide developers with answers to most of their questions regarding processes.

Net Energy Billing

In-depth Net Energy Billing Information/Application (In order to apply for Customer Net Energy Billing you will need to fill out the required Chapter 313 Application, this is IN ADDITION to the Interconnection)