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Investor-owned utility

Pioneer Power and Light interconnection application

Pioneer Power and Light is an investor-owned utility serving 2,021 residential customers in Wisconsin (EIA-861, 2025). Gridpol files Pioneer Power and Light 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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Partly researched from official sources. verify on first project: no Pioneer website, tariff or DG contact found (not on PSC DG points-of-contact list); confirm submission channel, net metering/buyback tariff, PSC 119 timelines and storage rules with the utility. Process/fees/documents shown are PSC 119 statewide standard.

Pioneer Power and Light at a glance

Utility

Pioneer Power and Light Co

Type

Investor-owned utility

EIA utility ID

15086

Residential customers

2,021 (EIA-861, 2025)

Net-metered residential customers

none reported

Service territory

3 counties in Wisconsin

Who submits

Applicant = legally responsible person applying (PSC 119.02(2)); Form 6031 has representative and installing-contractor sections. Per PSC, obtain forms from the utility and submit directly to it. Utility-specific submission channel (email/mail) not published.

Review time (official)

PSC 119 timelines not extracted (Wis. legislature site unreachable). Form 6029: utility testing within 10 working days after completion notice; if waived, interconnect on notice or after 5 working days; revised application decided within 20 working days.

Documents Pioneer Power and Light asks for

Interconnection application formWisconsin Standard DG Application Form 6031 (eff. 5/1/2024), submitted directly to the electric provider with fees (PSC 119.04(2)); signed by applicant and project designer/engineer Gridpol prepares this.
Other utility-specific documentTechnology-based supplement + manufacturer spec sheets (Solar PV Supplement; Energy Storage Supplement if battery)
Single-line diagram (one-line)One-line schematic incl. DG equipment, disconnect (if required), point of interconnection, meters, protection (Form 6031 item 14b) Gridpol prepares this.
Site plan / site layoutSite plan with equipment, service entrance, meters, DG/interface/protection equipment, disconnect location, street name/address (14c) Gridpol prepares this.
Proof of insuranceProof of insurance (14d); PSC Table 119.05-1 minimum: Cat 1 $300,000, Cat 2 $1,000,000, Cat 3 $2,000,000, Cat 4 negotiated
UL 1741 / IEEE 1547 certificationProof of equipment certification (e.g. UL 1741) or compliance with PSC 119.27 (14e)
Interconnection agreementForm 6029 (<=20 kW) or 6030 (>20 kW-15 MW), signed before parallel operation

How the Pioneer Power and Light process runs

Contact the utility for its current application and interconnection agreement forms (PSC: online forms are informational).
Submit Form 6031 + technology supplement(s), one-line diagram, site plan, proof of insurance, equipment certification and application fee directly to the utility.
Utility completeness/engineering review per PSC 119; utility approves the application.
Sign interconnection agreement (Form 6029 <=20 kW / 6030 >20 kW) before parallel operation.
Install; applicant notifies utility in writing that installation is complete and equipment is available for testing.
Utility commissioning test within 10 working days; if utility waives testing, applicant may interconnect on utility notification or 5 working days after its completion notice (Form 6029 sec. 7).

Fees

Fee	Applies to	Note
$150	Category 1, 1-8 kW export capacity	Application review fee, PSC Table 119.08-1 (Form 6031); engineering review/study cost based; commissioning fee $150
$300	Category 1, 9-20 kW	Application review fee; commissioning $150
$300 + $10/kW	Category 2, >20-200 kW	Application review fee; commissioning $250; engineering/study cost based
$2,000 + $2/kW	Category 3, >200 kW-1 MW	Commissioning $1,000
$4,000 + $0.50/kW	Category 4, >1-15 MW	Commissioning $2,500

Utility fees are paid by the installer or customer; they are not part of the Gridpol plan.

Size levels and limits

Level	Up to	Note
Category 1	20 kW	PSC 119
Category 2	200 kW
Category 3	1000 kW
Category 4	15000 kW

PSC 119 applies to DG <=15 MW AC; categories by export capacity.

Storage, EV and stamps

Battery storage

PSC Energy Storage Supplement to Form 6031 required: nameplate kW/kWh, operating modes available/enabled, whether system exports and charges from grid, AC vs DC coupling. Utility-specific storage rules not published.

Sources

PSC Wisconsin - Customer-Owned Generation (PSC 119, forms 6029-6033; contact utility for forms, submit directly to utility): https://psc.wi.gov/Pages/ForConsumers/MoreResources/CustomerOwnedGeneration.aspx (retrieved 2026-11-13)
PSC Form 6031 Wisconsin Standard DG Application (eff. 5/1/2024; fees Table 119.08-1, insurance Table 119.05-1, required attachments): https://psc.wi.gov/Documents/Energy/DG_Form6031WisconsinStandardDistributedGenerationApplication.pdf (retrieved 2026-11-13)
PSC Form 6029 DG Interconnection Agreement (20 kW or less) - commissioning testing sec. 7: https://psc.wi.gov/Documents/Energy/DG_Form6029DG20orLessAgreement.pdf (retrieved 2026-11-13)
PSC Energy Storage Supplement (operating modes, export/grid charging, AC/DC coupling): https://psc.wi.gov/Documents/Energy/DG_Form_EnergyStorageSupplement.pdf (retrieved 2026-11-13)
PSC Distributed Generation Points of Contact (updated Feb 27, 2026) - utility not listed: https://psc.wi.gov/Documents/Energy/DG_PointsofContact.pdf (retrieved 2026-11-13)

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.

Wis. Admin. Code ch. PSC 119 (archive.org copy, Register Jan. 2025 No. 829): https://web.archive.org/web/20260113134928/https://docs.legis.wisconsin.gov/code/admin_code/psc/119.pdf (retrieved 2026-11-13)
PSC of Wisconsin - Customer-Owned Generation (forms 6029-6033): https://psc.wi.gov/Pages/ForConsumers/MoreResources/CustomerOwnedGeneration.aspx (retrieved 2026-11-13)

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.