Distributed Generation

Interconnection Information

Contact PEC for information about the DG program prior to starting your project.

Interconnection application and one-line diagram must be submitted and approved by PEC prior to installation. Application fee must be paid before PEC personnel will review your application and supporting documents.
Wiring compliance statement must be signed by WI certified Master Electrician and submitted to PEC prior to scheduling commissioning. Commissioning fee must be paid before the scheduled commissioning date with PEC.
Under no circumstances shall the system be energized prior to commissioning. If PEC finds it has been, a $500 fee will be charged.
Interconnection agreement must be signed at the time of commissioning.
If the system is not installed per the one-line diagram, safety related code compliance issues are found, or fails anti-island testing, a $150 fee will be applied for each return trip.

DG Application & Commissioning Fee

Effective January 1, 2026, PEC will be implementing an application fee and a commissioning fee for all new distributed energy resource (DER) project submissions.

Application Fee: This fee is necessary to begin the review process of your DER project application, including the evaluation of the one-line diagram and other required documents. Payment of the application fee is mandatory for the application review to proceed. If you apply via email, you will receive a response with an invoice and link to make your payment online through Pay Now. Payments may also be made in person or by mail.

Commissioning Fee: When your DER project is ready for grid interconnection, a commissioning fee will be applied. This fee covers the site visit to perform anti-island testing and verification that the system is installed per the approved one-line schematic.

After approval of your application, a commissioning fee invoice will be created and emailed to you. The payment may be made online through Pay Now, in person, or by mail. The fee must be paid prior to the scheduled commissioning date.

Distributed Energy Resource (DER) Fee Schedule
Category	Export Capacity	Application Review Fee	Engineering/Distribution Study Fee	Commissioning Fee
1	20 kW or less	$300	Cost based	$150
2	Greater than 20 kW to 200 kW	$300 + $10/kW	Cost based	$250
3	Greater than 200 kW to 1 MW	$2,000 + $2/kW	Cost based	$1,000
4	Greater than 1 MW to 15 MW	$4,000 + $.50/kW	Cost based	$2,500