Interconnection Guidelines (Arizona)

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Last modified on February 12, 2015.

Rules Regulations Policies Program

Place Arizona

Name Interconnection Guidelines
Incentive Type Interconnection
Applicable Sector Commercial, Industrial, Residential
Eligible Technologies Biomass, CHP/Cogeneration, Fuel Cells, Geothermal Electric, Hydroelectric, Landfill Gas, Microturbines, Other Distributed Generation Technologies, Photovoltaics, Solar Thermal Electric, Wind
Active Incentive Yes

Implementing Sector State/Territory
Energy Category Renewable Energy Incentive Programs

Applicable Utilities Investor-owned utilities, SRP

External Disconnect Switch Varies by utility

Insurance Requirements Vary by utility

Net Metering Required No

Standard Agreement Varies by utility

System Capacity Limit Varies by utility

Date added to DSIRE 2003-08-21
Last DSIRE Review 2013-04-17

References DSIRE[1]


Note: In June 2007, the Arizona Corporation Commission (ACC) initiated a rulemaking process to establish statewide interconnection standards for distributed generation (DG). This proceeding is still in progress. Until the new official rules go into effect, the commission has recommended that the utilities use the Interconnection Document as a guide. This document applies to systems up to 10 megawatts (MW) in capacity.

The state's utilities independently developed interconnection agreements for distributed generation (DG) prior to the ACC's ongoing proceeding to establish statewide standards. The Salt River Project (SRP), which is not regulated by the ACC on utility matters, developed DG interconnection guidelines and an interconnection agreement based on draft rules and a report released by the ACC in 1999 and 2000, respectively. SRP's rules include technical protection requirements, a flow chart of interconnection procedures and a two-page interconnection application. The rules establish separate requirements for units based on system capacity:

  • Class I: 50 kilowatts (kW) or less, single or three-phase
  • Class II: 51 kW to 300 kW, three-phase
  • Class III: 301 kW to five megawatts (MW), three-phase
  • Class IV: greater than 5 MW, three-phase

Tucson Electric Power (TEP) and Arizona Public Service (APS) -- the other two major electric utilities in Arizona -- have similarly established their own interconnection procedures for DG systems. It is likely that Arizona's regulated utilities will adopt the ACC's interconnection standards when the final rules are adopted.

Incentive Contact

Contact Name Barbara Keene
Department Arizona Corporation Commission

Address 1200 W. Washington St.

Place Phoenix, Arizona
Zip/Postal Code 85007
Phone (602) 542-0853


  • Incentive and policy data are reviewed and approved by the N.C. Solar Center's DSIRE project staff.[1]


  1. 1.0 1.1  "Database of State Incentives for Renewables and Efficiency (DSIRE)"