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Electric cooperative

Pierce-Pepin Cooperative Services interconnection application

Pierce-Pepin Cooperative Services is an electric cooperative serving 7,990 customers in Wisconsin (EIA-861, 2025). Gridpol files Pierce-Pepin Cooperative Services interconnection applications for licensed installers – solar, storage and EV chargers – with single-line diagram and site plan, unlimited for $500 a month.

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Wisconsin’s commission rule (Wis. Admin. Code ch. PSC 119 (implements s. 196.496, Stats.)) does not bind electric cooperatives; Pierce-Pepin Cooperative Services sets its own interconnection policy. We confirm its form on the first project. Municipal utilities are bound by PSC 119 and file PSC-approved tariffs. Electric cooperatives are not PSC-regulated public utilities and set their own interconnection and net metering/buyback policies.

Pierce-Pepin Cooperative Services at a glance

Utility

Pierce-Pepin Coop Services

Type

Electric cooperative

EIA utility ID

15034

Customers

7,990 (EIA-861, 2025, short form: all customer classes)

Net-metered residential customers

none reported

Service territory

4 counties in Wisconsin

Wholesale supplier / association

Dairyland Power Cooperative

Documents Pierce-Pepin Cooperative Services asks for

  • Interconnection application formFilled in by us from your project data in the utility’s portal or on its form. Gridpol prepares this.
  • Single-line diagram (one-line)Drawn by us from your equipment data: modules, strings, inverter, battery, disconnects, point of interconnection, meter. Gridpol prepares this.
  • Site plan / site layoutDrawn by us from your roof sketch or photos: array, inverter, battery, disconnect, meter and main panel locations. Gridpol prepares this.
  • PV module spec sheetManufacturer data sheet of the modules.
  • Inverter spec sheetManufacturer data sheet (string inverter, microinverter or hybrid inverter).
  • Customer signatureThe account holder signs the application or authorization. We send the signature link.
  • Recent electric billName, service address, account and meter number must match the application.
  • Final inspection sign-offApproved electrical inspection from the authority having jurisdiction after installation.

Typical documents for US utilities – not yet verified for Pierce-Pepin Cooperative Services. We confirm Pierce-Pepin Cooperative Services’s exact list on the first project.

Wisconsin interconnection rule

Commission

Public Service Commission of Wisconsin

Interconnection rule

Wis. Admin. Code ch. PSC 119 (implements s. 196.496, Stats.) – Rules for Interconnecting Distributed Generation Facilities · source

Applies to

All electric public utilities (investor-owned and municipal utilities, which are public utilities under ch. 196) for DG facilities <=15 MW on their distribution systems. Electric cooperatives are not public utilities under ch. 196 and are not covered.

Application form

Statewide standard forms: Form 6031 Wisconsin Standard Distributed Generation Application (+ technology supplements: solar PV, wind, energy storage, generator, change of ownership); Form 6029 Interconnection Agreement (<=20 kW), Form 6030 (20 kW-15 MW); pre-application Forms 6032/6033 (all dated 2024-05-01)

Timelines

Utility furnishes guidelines and standard form within 5 working days of request; completeness notice within 10 working days of application + fee; application review within 10 working days of completeness (if no engineering review needed, applicant may install); applicant has 15 working days to accept engineering review estimate; engineering review 10/15/20/40 working days for Cat. 1/2/3/4; distribution study 10/15/20 working days (Cat. 1-3). Modifications: advance notice 20/40/60 working days; utility response 20/40/60/60 working days or deemed approved.

Fees

Table PSC 119.08-1: Cat. 1 $150 (1-8 kW) or $300 (9-20 kW); Cat. 2 $300 + $10/kW; Cat. 3 $2,000 + $2/kW; Cat. 4 $4,000 + $0.50/kW; engineering review and distribution study cost-based; commissioning fee $150/$250/$1,000/$2,500. Utility may waive.

Insurance

Minimum liability insurance per occurrence: Cat. 1 $300,000; Cat. 2 $1,000,000; Cat. 3 $2,000,000; Cat. 4 negotiated. Cat. 2-4 must name the utility as additional insured. Alternative financial responsibility by mutual agreement.

External disconnect

Utility may require a lockable, visible-break interconnection disconnect switch opening all ungrounded poles, accessible at all times and labeled 'Interconnection Disconnect Switch' (PSC 119.20(3)-(4)); one-line diagram and site plan must show the switch location.

Export compensation

Utility-specific – No statewide net metering statute; PSC-approved parallel generation / net metering tariffs of each utility
PSC: net metering available to customers of investor-owned and municipal utilities below a utility-specific size threshold; buyback rates set in each utility's parallel generation tariff.

Not bound by the rule

Municipal utilities are bound by PSC 119 and file PSC-approved tariffs. Electric cooperatives are not PSC-regulated public utilities and set their own interconnection and net metering/buyback policies.

Other utilities in Wisconsin

All Wisconsin utilities →

Gridpol Unlimited

$500 / month

Unlimited interconnection applications. 12-month agreement, signed online. The agreement starts the day you sign; first invoice right away, then monthly.

  • Unlimited interconnection applications
  • Single-line diagram and site plan for every application
  • Pre-submission check against the utility’s requirements
  • Homeowner e-signature link for the authorization
  • Filing in your utility portal accounts or by the utility’s method
  • Utility questions, corrections and resubmissions
  • Follow-up through approval, inspection and PTO
  • Customer list, exports, API and webhooks
Get started

Applications are typically submitted within 2 business days after complete documents. Utility review times are set by each utility.

Get started – $500/month unlimited