Steps for interconnecting customer owned generation (20 kW or less) to the WWLC distribution system

Adding a wind turbine, solar photovoltaic system, micro turbine, or other electric generation technology to your home or business and to the Wisconsin Rapids Water Works & Lighting Commission (WWLC) distribution system is called interconnection.

If you connect to our distribution system with a generation facility you must comply with Wisconsin Administrative Code Rules, Chapter PSC 119 (PSC 119).

Your responsibilities

You and your installer are responsible for coordination of design, installation, operation and maintenance of any generation system you install, and for conforming to the requirements of our tariffs and rules, and applicable governmental laws and regulations (local, state, and federal).

These requirements are designed to protect distribution system facilities; avoid electrical interference problems; ensure the safety of customers, electric provider employees and the general public; and maintain overall system reliability.

You are required by law to maintain liability insurance (equal to or greater than the amounts indicated in PSC 119) or to prove financial responsibility by another means agreeable to us. You are required to notify us if a material modification is made to your generation facility at any time during or after the installation process. A material modification is any modification that changes the maximum electrical output of your facility or changes the interconnection equipment, including:

  • Changing from certified to non-certified devices
  • Replacing a component with a component of different functionality or UL listing

You also are responsible for the proper installation, operation and maintenance of the specified protective devices. Finally, you shall obtain, at your expense, any and all authorizations, permits and licenses required for the construction and operation of your generating facilities.

WWLC responsibilities

WWLC is responsible for promptly carrying out the steps listed below and for meeting all required steps and timelines to process your interconnection application. Shawn Reimer 715-422-9039 is the primary contact and will assist you with any questions or information you need to complete your interconnection.


The steps below are required by state law to interconnect to our distribution system. Links to actual state law and associated guidelines are included at the end of this page.

Step 1 – Starting the Process

Call 715-422-9039 to inform WWLC that you want to interconnect an electric generating system to our distribution system.

WWLC will respond to your request within 5 working days and provide all materials necessary to complete your interconnection application. All documents, forms and applications also are included in the last section of this page.

Step 2 – Interconnection application

Complete and submit the appropriatethe Distributed Generation Interconnection and Application Forms and mail it to:

Shawn Reimer
Wisconsin Rapids Water Works & Lighting Commission
PO Box 399
Wisconsin Rapids, Wi 54495

Step 3 – Application review

WWLC will review your application and notify you whether the application is complete within 10 working days.  In the event the application is incomplete, WWLC will be happy to work with you to make the necessary corrections.

Step 4 – Engineering review determination

When your application is complete, WWLC will determine whether an engineering review is needed. If an engineering review is necessary, WWLC will notify you within 10 working days and state the cost we will charge you for that review.

Note: If you are not notified about a review in 10 days, go to step 10.

Step 5 – Engineering review

After you notify us in writing to proceed and submit applicable payment, we will complete the engineering review and notify you of the results.

Step 6 – Distribution system study determination

If the engineering review determines that a distribution system study is necessary, we will include a written cost estimate in the review summary.

Step 7 – Completion of distribution system study

After you send us written notification to proceed and pay the applicable fee, WWLC will conduct the distribution system study. This study assesses the impact your generating system will have once connected to our grid.  We will provide you with the study results.

Step 8 – Notification of construction or modification costs

WWLC will notify you of distribution system study results and costs associated with any construction or modifications to our grid.  You will need to provide a written agreement to pay for work related to the interconnection modifications.

Step 9 – Installation of customer generation

After you submit payment for the required upgrade of our distribution system, you will install your generating equipment within a timeframe that is mutually agreed upon and notify us when project construction is complete.  After we receive payment, WWLC will perform all work needed to upgrade our distribution system to accommodate your generating equipment.

Step 10 – System testing and acceptance

When your system is complete, you are required to notify WWLC so WWLC may witness or verify system testing.  After we receive notification that an installation is complete, WWLC will do one (or more) of the following:

  • Witness commissioning tests
  • Perform an anti-islanding test or verify protective equipment settings at our expense Or
  • Waive our right, in writing, to witness or verify commissioning tests
  • Please note, you may be charged for testing, calibrating, and re-testing

Step 11 – Testing approval/rejection

WWLC notify you of our approval or rejection of the interconnection. If approved, WWLC will provide a written statement of final acceptance and cost reconciliation. If we do not approve the interconnection, you may take corrective action and ask that we re-examine your interconnection request.

Step 12 – Interconnection agreement

After the system is approved, both the applicant and WWLC must sign the Standard Interconnection before parallel generation operation commences.  Send the completed document to:

Shawn Reimer
Wisconsin Rapids Water Works & Lighting Commission
PO Box 399
Wisconsin Rapids, Wi 54495



Tariff information