Property Tax Assessment for Renewable Energy Equipment

March 23, 2023


For the purpose of determining property tax, renewable energy and storage equipment owned by utilities and other entities operating in Arizona is assessed at 20% of the "taxable original cost" after deducting depreciation. "Renewable energy equipment" is defined as "electric generation facilities, electric transmission, electric distribution, gas distribution or combination gas and electric transmission and distribution and transmission and distribution cooperative property that is located in this state, that is used or useful for the generation, storage, transmission or distribution of electric power, energy or fuel derived from solar, wind or other nonpetroleum renewable sources not intended for self-consumption, including materials and supplies and construction work in progress, but excluding licensed vehicles and property valued under sections 42-14154 and 42-14156."

H.B. 2403 of 2014 clarified that depreciation should be determined using straight-line depreciation over the useful life of the equipment. The taxable original cost equals the original cost of the equipment, reduced by any investment tax credits, production tax credits, or grants in lieu of investment tax credits.

Program Overview

Implementing Sector: State
Category: Financial Incentive
State: Arizona
Incentive Type: Property Tax Incentive
Web Site:
Administrator: Arizona Department of Revenue
Start Date:
Eligible Renewable/Other Technologies: Solar Thermal Electric,Solar Photovoltaics,Wind (All),Biomass,Hydroelectric,Lithium-ion
Incentive Amount: Renewable energy equipment assessed at 20% of its depreciated cost
Equipment Requirements: Energy must not be used on-site


Name: A.R.S. § 42-14155
Date Enacted: 4/10/2000 (subsequently amended)
Expiration Date: 12/31/2040


Name: Arizona Department of Revenue
Address: 1600 W. Monroe St., Division 13
Phoenix AZ 85007
Phone: (602) 716-6843

This information is sourced from DSIRE; the most comprehensive source of information on incentives and policies that support renewables and energy efficiency in the United States. Established in 1995, DSIRE is operated by the N.C. Clean Energy Technology Center at N.C. State University.