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Amendment for Southline Transmission Project Construction

Corporation Commission | State of Arizona logoCorporation Commission | State of Arizona
Document date
Dec 3, 2025

The 30-second brief

What it covers

The Commission considered and potentially amended prior decisions to allow Southline Transmission, L.L.C. to construct over 70 miles of new high-voltage electric transmission line and associated substation facilities in southern Arizona.

Who holds it

Southline Transmission LLC holds this construction contract with Corporation Commission | State of Arizona. Its other public contracts on record include work for New Mexico Renewable Energy Transmission Authority | State of New Mexico and unspecified agency.

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Contract details

Contract type
Construction
Document date
December 3, 2025
Vendor
Southline Transmission LLC
Agency
Corporation Commission | State of Arizona
Source document
arizona_corporation_commission_open_meeting_agenda.pdf (Agenda)

Southline Transmission LLC's other public contracts

New Mexico Renewable Energy Transmission Authority | State of New Mexico, New MexicoRETA Extends Southline Transmission Memorandum · May 27, 2026UndisclosedNew Mexico Renewable Energy Transmission Authority | State of New Mexico, New MexicoAuthority to Discuss Southline Transmission MOU Extension · May 27, 2026UndisclosedNew Mexico Renewable Energy Transmission Authority | State of New Mexico, New MexicoAuthority to Consider Southline Transmission MOU Extension · May 27, 2026Undisclosedunspecified agency, New MexicoAmended Stipulation in Southline Transmission Petition · Apr 23, 2026UndisclosedCochise County, ArizonaSouthline Transmission Receives 25-Year Electricity Franchise · Feb 24, 2026UndisclosedAll Southline Transmission LLC contractsVendor profile

More Corporation Commission | State of Arizona contracts

Custom Teleconnect IncCustom Teleconnect Requests Arizona Certificate Cancellation · Jul 8, 2026UndisclosedAsh Fork Development Association Inc Dba Ash Fork Water ServiceFinancing Order for Ash Fork Water Service Considered · Jul 8, 2026UndisclosedMontezuma Heights Water & Airport Co IncMontezuma Heights Public Service Status Reconsidered · Jul 8, 2026UndisclosedTucson Electric Power CompanyAmended Compatibility Certificate for TEP Springerville Project · Jul 8, 2026UndisclosedHumboldt Water System IncCommission Reviews Humboldt Water System Financing and Rates · Jul 8, 2026UndisclosedAll Corporation Commission | State of Arizona activityAgency profile

Questions about this contract

Who was awarded the construction contract by Corporation Commission | State of Arizona?

Southline Transmission LLC was awarded this construction contract by Corporation Commission | State of Arizona, as recorded on December 3, 2025.

What type of contract is this?

This is a Construction contract, documented as a agenda record.

Where was this contract approved?

This contract appears in arizona_corporation_commission_open_meeting_agenda.pdf (Agenda), dated December 3, 2025 from Corporation Commission | State of Arizona. Civic IQ extracts contract records directly from agency meeting documents and solicitations.

What other contracts does Southline Transmission LLC hold?

Southline Transmission LLC may hold additional government contracts. View their full contract history, the agencies they serve, and total tracked spend on their Civic IQ vendor profile.

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What is Corporation Commission | State of Arizona currently buying?

Explore Corporation Commission | State of Arizona's vendors, signed contracts, and active RFPs on their Civic IQ agency profile.

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