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Investor-owned utility

Westfield Electric Co interconnection application

Westfield Electric Co is an investor-owned utility serving 622 residential customers in Wisconsin (EIA-861, 2025). Gridpol files Westfield Electric Co 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 utility website found (westfieldelectric.com is an unrelated CA contractor) and utility not in PSC DG contact list; PSC tariff site blocked and web-search budget exhausted. Confirm contact/submission channel, parallel generation/net metering tariff and buyback rate with the utility or PSC (608-266-5481).

Westfield Electric Co at a glance

Utility

Westfield Electric Company

Type

Investor-owned utility

EIA utility ID

40036

Residential customers

622 (EIA-861, 2025)

Net-metered residential customers

none reported

Service territory

1 county in Wisconsin

Who submits

Per PSC Wisconsin: contact the electric provider for its application/agreement forms and submit directly to the utility. Form 6031 applicant = legally responsible person; designer/engineer also signs; installing contractor listed. Utility-specific contact not found (not in PSC DG Points of Contact IOU list of 2/27/2026; westfieldelectric.com is an unrelated California contractor).

Review time (official)

Form 6029: utility testing within 10 working days after notice of completion. PSC 119 application review timelines not extracted.

Documents Westfield Electric Co asks for

  • Interconnection application formPSC Form 6031 Wisconsin Standard DG Application (eff. 5/1/2024) Gridpol prepares this.
  • Other utility-specific documentSolar Photovoltaic Supplement with manufacturer data sheets; Energy Storage Supplement if battery
  • Single-line diagram (one-line)One-line schematic incl. disconnect (if required), POI, meters, protection Gridpol prepares this.
  • Site plan / site layoutEquipment, service entrance, meters, DG/disconnect location, street address Gridpol prepares this.
  • Proof of insuranceProof of insurance; Cat 1 min $300,000, Cat 2 $1M, Cat 3 $2M (Table 119.05-1)
  • UL 1741 / IEEE 1547 certificationProof of certification (e.g. UL 1741) or PSC 119.27 compliance
  • Interconnection agreementForm 6029 (≤20 kW) or 6030 (>20 kW-15 MW)

How the Westfield Electric Co process runs

  1. Contact utility for application/agreement forms
  2. Submit Form 6031 + supplements, one-line, site plan, insurance proof, certification and fee
  3. Utility review per PSC 119
  4. Sign Form 6029/6030; install
  5. Notify utility of completion; utility commissioning test (within 10 working days) before parallel operation

Fees

FeeApplies toNote
$150 (1-8 kW) / $300 (9-20 kW) + $150 commissioningCategory 1 ≤20 kWPSC 119 Table 119.08-1 (statewide)
$300 + $10/kW + $250 commissioningCategory 2 >20-200 kWPSC 119 Table 119.08-1

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

Size levels and limits

LevelUp toNote
Category 120 kWPSC 119
Category 2200 kW
Category 31000 kW
Category 415000 kW

PSC 119 applies to DG ≤15 MW. Utility net metering size threshold unknown.

Storage, EV and stamps

Battery storage

PSC Energy Storage Supplement to Form 6031 applies (operating modes, export, grid charging, coupling).

Sources

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.

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