RAPID/BulkTransmission/Transmission Siting & Interconnection

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Transmission Siting & Interconnection Comparison

This page allows users to compare Transmission Siting & Interconnection across multiple states

Permitting Location State Siting Act State Preemptive Authority Siting/Permitting Entities Permit Processing Timeframe

Bulk Transmission Transmission Siting & Interconnection in Alaska

Regulatory Commission of Alaska

Bulk Transmission Transmission Siting & Interconnection in Arizona

Arizona Revised Statute Title 40, Chapter 2, Article 6.2

The Transmission Line Siting Committee (TLSC) may find that compliance with local ordinances, master plan or regulation is unreasonably restrictive and compliance is not feasible in view of technology available, in which case the TLSC may grant a certificate.

Arizona Corporation Commission (ACC) and the TLSC

In general, the TLSC has 180 days from the date the application is filed to either issue or deny a CEC application. Once the TLSC has made a decision, the application is forwarded to the ACC for review. The ACC then has between 30-60 days to confirm, deny or modify the proposed CEC.

Bulk Transmission Transmission Siting & Interconnection in California

Public Utilities Act

Local jurisdictions acting pursuant to local authority are preempted from regulating electric power line projects constructed by public utilities subject to the California Public Utility Commission’s (CPUC) jurisdiction, the public utilities shall consult with local governments concerning land use matters.


Typically 18 months but the process can take longer for contentious projects.

Bulk Transmission Transmission Siting & Interconnection in Colorado


The Colorado Public Utilities Commission (CPUC) has backstop authority only. According to Colorado Revised Statute (C.R.S.) 29-20-108 if a permit is denied by the local government, the applicant may appeal to the CPUC if certain conditions are met.

Local Governments (Counties and Municipalities), CPUC in case of appeal

Local governments must make final decisions within 120 days of the utility’s submission of a preliminary application, if a preliminary application is required, or within 90 days after submission of a final application. The 120- or 90-day time periods commence when the submission is deemed complete. Within 28 days of a utility’s application, the local government must notify the utility of any additional information that must be supplied by the utility or authority to complete the application. If the local government does not take final action within the applicable decision time frames, the application shall be deemed approved.

Bulk Transmission Transmission Siting & Interconnection in Federal

Bulk Transmission Transmission Siting & Interconnection in Hawaii

Hawaii Public Utilities Commission

Bulk Transmission Transmission Siting & Interconnection in Idaho

Idaho Statutes Title 61 Chapter 17 §61-1703 (For transmission lines within a NIETC)

The Idaho Public Utilities Commission (IPUC) has authority to preempt local governments land use decisions pertaining to facilities within a Nationl Interstate Electric Transmission Corridor (NIETC).

If NIETC not present then a local land use permit would be required from the local government(s) affected, If NIETC is present, then a Route Permit or Certificate of Public Convenience and Necessity (CPCN) would be required from the IPUC.

Route Permit can take 18 months

Bulk Transmission Transmission Siting & Interconnection in Montana

Montana Major Facility Siting Act (MFSA)

he Montana Department of Environmental Quality (MDEQ) has the authority to approve or deny the required Certificate of Compliance and can refuse to apply any local law or regulation if MDEQ determines that, when applied to the proposed facility, the law or regulation is unreasonably restrictive in view of the existing technology, of factors of cost and economics, or of the needs of consumers.


Within 9 months of accepting the CC application the MDEQ must issue a report containing any MDEQ studies, evaluations, recommendations, etc. resulting for the MDEQ's study and evaluation of the application. An expedited 90-day review process is available for proposals unlikely to have environmental impacts. If a project is subject to joint review by the MDEQ and a federal land management agency, the MDEQ’s certification decision may be timed to correspond to the record of decision issued by the participating federal agency.

Bulk Transmission Transmission Siting & Interconnection in Nevada

Utility Environmental Protection Act (UEPA)

The Nevada Public Utilities Commission has exclusive jurisdiction with regard to the determination of whether a need exists for a utility facility.

Nevada Public Utilities Commission (PUCN)

The PUCN will grant or deny an application within 150 days after an application is filed (for applications not requiring federal review). The PUCN will grant or deny an application within 120 days after an amended application is filed, unless otherwise required under federal law (for applications requiring federal review).

Bulk Transmission Transmission Siting & Interconnection in New Mexico

New Mexico Statutes (N.M.S.) 62-9-1, 62-9-3(B), and 62-9-3.2

No Location Permit may be approved by the New Mexico Public Regulations Commission (NMPRC) that violates an existing state, county, or municipal land use statutory or administrative regulation unless NMPRC finds that the regulation is "unreasonably restrictive and not in the interest of the public convenience and necessity.

NMPRC, local municipalities

9 months (Location Permit); 6 months (ROW Determination) (the ROW determination and the Location Permit can be addressed in one application)

Bulk Transmission Transmission Siting & Interconnection in Oregon

Oregon Revised Statutes (O.R.S.) 469.310

A Site Certificate from the Energy Facility Siting Council (EFSC) preempts all other Oregon law and “shall bind the state and all counties and cities and political subdivisions in this state as to the approval of the site and the construction and operation of the facility. However, the EFSC does not have jurisdiction over matters delegated by the federal government to other state agencies.

EFSC. Local Governments (Counties and Municipalities) if chosen by the applicant to make a decision as to compliance with local land use policies or if the facility is under local jurisdiction.

Although variable, the standard permitting timeframe is typically 18 months; 12 months for an expedited process, although varies by project complexity/controversy. Schedule estimates presented exclude the appeals process. Detailed information regarding schedule is provided on the Oregon Department of Energy website: http://www.oregon.gov/energy/Siting/Pages/time.aspx

Bulk Transmission Transmission Siting & Interconnection in Texas

Public Utility Commission of Texas

Bulk Transmission Transmission Siting & Interconnection in Utah

Siting of High Voltage Power Line Act

The Utah Public Service Commission (UPSC) does not have direct siting authority over high-voltage transmission lines. In cases of dispute, the Board has authority to hear and resolve issues regarding the construction and installation of public utility facilities. The Board cannot preempt a local siting decision, however, it may require the local government to alter its conditions or requirements.

Local Governments (Counties and Municipalities), Utility Facility Review Board to resolve issues /disputes

Local governments shall make final decision on the public utility’s application for a permit, authorization, approval, exception, or waiver, for a facility within 60 days of the date the public utility applied to the local government.

Bulk Transmission Transmission Siting & Interconnection in Washington

Energy Facility Site Location Act

The Energy Facility Site Evaluation Council (EFSEC) has preemptive authority over all other state and local agencies.

Local governments or the EFSEC

The Site Certification process with the EFSEC is expected to take between 12 and 14 months, and local permits vary by county and municipality

Bulk Transmission Transmission Siting & Interconnection in Wyoming

Wyoming Industrial Development and Siting Act (WISA)

The WDEQ/Industrial Siting Council (ISC) has jurisdiction over transmission projects within the state, and has the authority to preempt local decisions regarding transmission siting and construction.


The decision will typically be issued in 135 days of the filing of an application under section 109 and within 60 days of the filing of an application under section 107.

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