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Municipal utility

Johnson City interconnection application

Johnson City is a municipal utility serving 72,729 residential customers in Tennessee (EIA-861, 2025). Gridpol files Johnson City 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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Tennessee’s commission rule (the state interconnection rule) does not bind municipal utilitys; Johnson City sets its own interconnection policy. We confirm its form on the first project. TVA local power companies (municipal utilities and cooperatives) set their own interconnection procedures and agreements; Green Connect participation is voluntary per LPC (residential PV, TVA QCN installer, TVA program standards, installation verification). Excess generation via TVA Dispersed Power Production.

Johnson City at a glance

Utility

Johnson City

Type

Municipal utility

EIA utility ID

9777

Residential customers

72,729 (EIA-861, 2025)

Net-metered residential customers

none reported

Service territory

4 counties in Tennessee

Documents Johnson City 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 Johnson City. We confirm Johnson City’s exact list on the first project.

Tennessee interconnection rule

TVA role and no-net-metering confirmed from TVA FAQ (2021). TPUC jurisdiction statement (only Kingsport Power) not verified from TPUC source; Dispersed Power Production terms (size limits, rate) not retrieved; tva.com blocks direct fetch.

Commission

Tennessee Public Utility Commission (TPUC); Tennessee Valley Authority (TVA) as wholesale supplier/regulator of its local power companies

Interconnection rule

– No general TPUC small-generator interconnection rule. TVA-area local power companies (munis/coops) use TVA program standards (Green Connect / Dispersed Power Production) and their own interconnection agreements. · source

Applies to

Nearly all of Tennessee is served by TVA-supplied municipal and cooperative local power companies (LPCs), whose retail rates and DG policies are governed by TVA wholesale contracts, not TPUC. TPUC regulates only investor-owned Kingsport Power (AEP Appalachian Power) in electricity; no TPUC interconnection rule was found.

Application form

LPC-specific interconnection application/agreement; in participating LPCs the TVA Green Connect portal (www.greenconnect.com) or paper application is used for residential PV with TVA Quality Contractor Network (QCN) installer.

Timelines

Green Connect: no time limit to install after application while program active; installation verification (1-2 hours) by Green Connect team with homeowner/installer/inspectors before commissioning (TVA Green Connect FAQ).

Fees

LPC-specific ('pays all necessary fees' per TVA FAQ).

Insurance

TVA does not require liability insurance; many local power companies have their own liability insurance requirements (TVA Green Connect FAQ Q23).

Export compensation

None statewide – TVA Green Connect FAQ Q20-21
Net metering is not available in the TVA service area. Excess energy can be compensated via TVA Dispersed Power Production (with the local power company). Behind-the-meter PV allowed.

Not bound by the rule

TVA local power companies (municipal utilities and cooperatives) set their own interconnection procedures and agreements; Green Connect participation is voluntary per LPC (residential PV, TVA QCN installer, TVA program standards, installation verification). Excess generation via TVA Dispersed Power Production.

Other utilities in Tennessee

All Tennessee 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