PSC 119.02(18)
(18) “Fault" means an equipment failure, conductor failure, short circuit, or other condition resulting from abnormally high amounts of current from the power source.
PSC 119.02(19)
(19) “IEEE" means Institute of Electrical and Electronics Engineers.
PSC 119.02(20)
(20) “Interconnection" means the physical connection of a DG facility to the distribution system so that parallel operation can occur.
PSC 119.02(21)
(21) “Interconnection disconnect switch" means a mechanical device used to disconnect a DG facility from a distribution system.
PSC 119.02(22)
(22) “Inverter" means a machine, device, or system that converts direct current power to alternating current power.
PSC 119.02(23)
(23) “Islanding" means a condition on the distribution system in which a DG facility delivers power to customers using a portion of the distribution system that is electrically isolated from the remainder of the distribution system.
PSC 119.02(26)
(26) “Material modification" means any modification that changes the maximum electrical output of a DG facility or changes the interconnection equipment, including:
PSC 119.02(26)(b)
(b) Replacing a component with a component of different functionality or UL listing.
PSC 119.02(28)
(28) “Nationally recognized testing laboratory" means any testing laboratory recognized by the U.S. Department of Labor Occupational Safety and Health Administration's accreditation program.
PSC 119.02(29)
(29) “Network service" means 2 or more primary distribution feeders electrically connected on the low voltage side of 2 or more transformers, to form a single power source for any customer.
PSC 119.02(30)
(30) “Parallel operation" means the operation, for longer than 100 milliseconds, of an on-site DG facility while the facility is connected to the energized distribution system.
PSC 119.02(31)
(31) “Paralleling equipment" means the generating and protective equipment system that interfaces and synchronizes a DG facility with the distribution system.
PSC 119.02(32)
(32) “Point of common coupling" means the point where the electrical conductors of the distribution system are connected to the customer's conductors and where any transfer of electric power between the customer and the distribution system takes place.
PSC 119.02(34)
(34) “Standard application form" means PSC Form 6027 for Category 1 DG facilities or PSC Form 6028 for Category 2 to 4 DG facilities.
PSC 119.02(35)
(35) “Standard interconnection agreement" means PSC Form 6029 for Category 1 facilities or PSC Form 6030 for Category 2 to 4 DG facilities.
PSC 119.02 Note
Note: A copy of PSC Forms 6027 to 6030 can be obtained at no charge from your local electric utility or from the Public Service Commission, PO Box 7854, Madison, WI 53707-7854.
PSC 119.02(36)
(36) “Telemetry" means transmission of DG operating data using telecommunications techniques.
PSC 119.02 History
History: CR 03-003: cr.
Register January 2004 No. 577, eff. 2-1-04.
PSC 119.03
PSC 119.03 Designated point of contact. Each public utility shall designate one point of contact for all customer inquiries related to DG facilities and from which interested parties can obtain installation guidelines and the appropriate standard commission application and interconnection agreement forms. Each public utility shall have current information concerning its DG point of contact on file with the commission.
PSC 119.03 History
History: CR 03-003: cr.
Register January 2004 No. 577, eff. 2-1-04.
PSC 119.04
PSC 119.04 Application process for interconnecting DG facilities. Public utilities and applicants shall complete the following steps regarding interconnection applications for all classes of DG facilities, in the order listed:
PSC 119.04(1)
(1) The public utility shall respond to each request for DG interconnection by furnishing, within 5 working days, its guidelines and the appropriate standard application form.
PSC 119.04(2)
(2) The applicant shall complete and submit the standard application form to its public utility.
PSC 119.04(3)
(3) Within 10 working days of receiving a new or revised application, the public utility shall notify the applicant whether the application is complete.
PSC 119.04(4)
(4) Within 10 working days of determining that the application is complete, the public utility shall complete its application review. If the public utility determines, on the basis of the application review that an engineering review is needed, it shall notify the applicant and state the cost of that review. For Categories 2 and 3, the cost estimate shall be valid for one year. For Category 4, the time period shall be negotiated but may not exceed one year
. If the application review shows that an engineering review is not needed, the applicant may install the DG facility and need not complete the steps described in
subs. (5) to
(9).
PSC 119.04(5)
(5) If the public utility determines on the basis of the application review that an engineering review is needed, upon receiving from the applicant written notification to proceed and receipt of applicable payment from the applicant, the public utility shall complete an engineering review and notify the applicant of the results within the following times:
PSC 119.04(6)
(6) If the engineering review indicates that a distribution system study is necessary, the public utility shall include, in writing, a cost estimate in its engineering review. The cost estimate shall be valid for one year and the applicant shall have one year from receipt of the cost estimate in which to notify the public utility to proceed, except for a Category 4 DG application, in which case the time period shall be negotiated, but may not extend beyond one year. Upon receiving written notification to proceed and payment of the applicable fee, the public utility shall conduct the distribution system study.
PSC 119.04(7)
(7) The public utility shall within the following time periods complete the distribution system study and provide study results to the applicant:
PSC 119.04(7)(d)
(d) Category 4 DG application, 60 working days unless a different time period is mutually agreed upon.
PSC 119.04(8)
(8) The public utility shall perform a distribution system study of the local distribution system and notify the applicant of findings along with any distribution system construction or modification costs to be borne by the applicant.
PSC 119.04(9)
(9) If the applicant agrees, in writing, to pay for any required distribution system construction and modifications, the public utility shall complete the distribution system upgrades and the applicant shall install the DG facility within a time frame that is mutually agreed upon. The applicant shall notify the public utility when project construction is complete.
PSC 119.04(10)(a)(a) The applicant shall give the public utility the opportunity to witness or verify the system testing, as required in
s. PSC 119.30 or
119.31. Upon receiving notification that an installation is complete, the public utility has 10 working days, for a Category 1 or 2 DG project, or 20 working days, for a Category 3 or 4 DG project, to complete the following:
PSC 119.04(10)(a)2.
2. Perform an anti-islanding test or verify the protective equipment settings at its expense.
PSC 119.04(10)(a)3.
3. Waive its right, in writing, to witness or verify the commissioning tests.
PSC 119.04(10)(b)
(b) The applicant shall provide the public utility with the results of any required tests.
PSC 119.04(11)
(11) The public utility may review the results of the on-site tests and shall notify the applicant within 5 working days, for a Category 1 DG project, or within 10 working days, for a Category 2 to 4 DG project, of its approval or disapproval of the interconnection. If approved, the public utility shall provide a written statement of final acceptance and cost reconciliation. Any applicant for a DG system that passes the commissioning test may sign a standard interconnection agreement and interconnect. If the public utility does not approve the interconnection, the applicant may take corrective action and request the public utility to reexamine its interconnection request.
PSC 119.04(12)
(12) A standard interconnection agreement shall be signed by the applicant and public utility before parallel operation commences.
PSC 119.04 History
History: CR 03-003: cr.
Register January 2004 No. 577, eff. 2-1-04.
PSC 119.05
PSC 119.05 Insurance and indemnification. PSC 119.05(1)
(1) An applicant seeking to interconnect a DG facility to the distribution system of a public utility shall maintain liability insurance equal to or greater than the amounts stipulated in Table 119.05-1, per occurrence, or prove financial responsibility by another means mutually agreeable to the applicant and the public utility. For a DG facility in Category 2 to 4, the applicant shall name the public utility as an additional insured party in the liability insurance policy.
-
See PDF for table 
PSC 119.05(2)
(2) Each party to the standard interconnection agreement shall indemnify, hold harmless and defend the other party, its officers, dire
ctors, employees and agents from and against any and all claims, suits, liabilities, damages, costs and expenses resulting from the installation, operation, modification, maintenance or removal of the DG facility. The liability of each party shall be limited to direct actual damages, and all other damages at law or in equity shall be waived.
PSC 119.05 History
History: CR 03-003: cr.
Register January 2004 No. 577, eff. 2-1-04.
PSC 119.06
PSC 119.06 Modifications to the DG facility. The applicant shall notify the public utility of plans for any material modification to the DG facility by providing at least
20 working days of advance notice for a Category 1 DG facility, 40 working days for Category 2 DG facility, and 60 working days for a Category 3 or 4 DG facility. The applicant shall provide this notification by submitting a revised standard application form and such supporting materials as may be reasonably requested by the public utility. The applicant may not commence any material modification to the DG facility until the public utility has approved the revised application, including any necessary engineering review or distribution system study. The public utility shall indicate its written approval or rejection of a revised application within the number of working days shown in the table below. Upon completion of the application process, a new standard interconnection agreement shall be signed by both parties prior to parallel operation. If the public utility fails to respond in the time specified in Table 119.06-1, the completed application is deemed approved.
-
See PDF for table PSC 119.06 History
History: CR 03-003: cr.
Register January 2004 No. 577, eff. 2-1-04.
PSC 119.07
PSC 119.07 Easements and rights-of-way. If a public utility line extension is required to accommodate a DG interconnection, the applicant shall provide, or obtain from others, suitable easements or rights-of-way. The applicant is responsible for the cost of providing or obtaining these easements or rights of way.
PSC 119.07 History
History: CR 03-003: cr.
Register January 2004 No. 577, eff. 2-1-04.
PSC 119.08
PSC 119.08 Fees and distribution system costs. PSC 119.08(1)(1) Upon receiving a standard application form, the public utility shall specify the amount of any engineering review or distribution system study fees. Application fees shall be credited toward the cost of any engineering review or distribution system study. The applicant shall pay the fees specified in Table 119.08, unless the public utility chooses to waive the fees in whole or in part.
-
See PDF for table PSC 119.08(2)
(2) The public utility may recover from the applicant an amount up to the actual cost, for labor and parts, of any distribution system upgrades required. No public utility may charge a commissioning test fee for initial start-up of the DG facility. The utility may charge for retesting an installation that does not conform to the requirements set forth in this chapter.
PSC 119.08 History
History: CR 03-003: cr.
Register January 2004 No. 577, eff. 2-1-04.
PSC 119.09
PSC 119.09 Disconnection. A public utility may refuse to connect or may disconnect a DG facility from the distribution system only under any of the following conditions:
PSC 119.09(1)
(1) Lack of approved standard application form or standard interconnection agreement.
PSC 119.09(2)
(2) Termination of interconnection by mutual agreement.
PSC 119.09(3)
(3) Non-compliance with the technical or contractual requirements.
PSC 119.09(5)
(5) Routine maintenance, repairs, and modifications, but only for a reasonable length of time necessary to perform the required work and upon reasonable notice.
PSC 119.09 History
History: CR 03-003: cr.
Register January 2004 No. 577, eff. 2-1-04.
PSC 119.10(1)
(1) The applicant shall include a one-line schematic diagram with the completed standard application form. ANSI symbols shall be used in the one-line schematic diagram to show the following:
PSC 119.10(1)(b)
(b) Point where the DG facility is electrically connected to the customer's electrical system.
PSC 119.10(1)(e)
(e) Method of grounding, including generator and transformer ground connections.
PSC 119.10(2)
(2) The applicant shall include with the schematic diagram technical specifications of the point where the DG facility is electrically connected to the customer's electrical system, including all anti-islanding and power quality protective systems. The specifications regarding the anti-islanding protective systems shall describe all automatic features provided to disconnect the DG facility from the distribution system in case of loss of grid power, including the functions for over/under voltage, over/under frequency, overcurrent, and loss of synchronism. The applicant shall also provide technical specifications for the generator, lockable interconnection disconnect switch, and grounding and shall attach the technical specification sheets for any certified equipment. The applicant shall include with the schematic diagram a statement by the manufacturer that its equipment meets or exceeds the type tested requirements for certification.
PSC 119.10 History
History: CR 03-003: cr.
Register January 2004 No. 577, eff. 2-1-04.
PSC 119.11
PSC 119.11 Control schematics. For equipment not certified under
s. PSC 119.26, the applicant shall include with the application a complete set of control schematics showing all protective functions and controls for generator protection and distribution system protection.
PSC 119.11 History
History: CR 03-003: cr.
Register January 2004 No. 577, eff. 2-1-04.
PSC 119.12
PSC 119.12 Site plan. For all categories, the applicant shall include with the application a site plan that shows the location of the interconnection disconnect switch, adjoining street name, and the street address of the DG facility. For Category 2, 3, or 4 DG facilities, the site plan shall show the location of major equipment, electric service entrance, electric meter, interconnection disconnect switch, and interface equipment.
