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Arizona

Arizona

Incentives/Policies for Renewables & Efficiency

Printable Version
City of Tucson - Solar Design Requirement for Homes   

Last DSIRE Review: 01/28/2013
Program Overview:
State: Arizona
Incentive Type: Building Energy Code
Eligible Renewable/Other Technologies: Solar Water Heat, Photovoltaics
Applicable Sectors: Residential
Residential Code:All new single-family homes or duplexes must be constructed to be "solar-ready".
Web Site: http://www.tucsonaz.gov/dsd/What_s_New/PV_Prep.pdf
Authority 1:
Date Enacted:
Date Effective:
City Ordinance No. 10549
6/17/2008
3/1/2009
Summary:

Tucson adopted an ordinance in June 2008 that requires all new single-family homes and duplexes in Tucson to be "solar-ready." The ordinance was developed by a stakeholder group which included Technicians for Sustainability, the Tucson Association of Realtors, the Sierra Club, the Southern Arizona Homebuilders Association, architectural professionals, solar energy companies and elements of the city government. The ordinance requires all new homes either to have a photovoltaic (PV) and solar water heating system installed, or to have all the necessary hardware installed so that a system can easily be installed at a later date.

To comply with this requirement, new homes must either have a complete solar water heating system installed or comply with one of two solar stub-out options. Option one requires the installation of two insulated pipes and a suitably sized conduit (for two pairs of monitoring and control wires) that run from the water heater area through the roof and are capped. Option two does not require the installation of pipes, but it does require the installation of a sleeve or conduit of sufficient size to hold the two insulated pipes and wires. To comply with option two there must be a straight line from the water heater area to the roof. Both options will greatly cut down on the cost of installing a system at a later date.

To comply with the PV requirement, a site plan must indicate the best roof space for locating the PV panels, and provide a roof structure designed for the additional collector weight. The site plan must also illustrate the best space available for accommodating PV equipment (meter, inverter, disconnect), and it should be adjacent to the electrical service panel or on a wall near the proposed location of the panels. There must also be a minimum 3,800-volt-ampere PV electrical load entry on the Service Load Calculation, and an Electrical Panel Schedule with a 240-volt circuit breaker space labeled “reserved for Photovoltaic.”

These requirements may be waived if it can be demonstrated to the building official that compliance is not practical due to shading, building orientation, construction constraints, or the configuration of the parcel of land.


 
Contact:
  Bruce Plenk
City of Tucson
Energy Office
4004 S. Park Ave
Bldg 1
Tucson, AZ 85714
Phone: (520) 837-6322 Ext.327
E-Mail: bruce.plenk@tucsonaz.gov
Web Site: http://www.tucsonaz.gov/energy
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Disclaimer: The information presented on the DSIRE web site provides an unofficial overview of financial incentives and other policies. It does not constitute professional tax advice or other professional financial guidance, and it should not be used as the only source of information when making purchasing decisions, investment decisions or tax decisions, or when executing other binding agreements. Please refer to the individual contact provided below each summary to verify that a specific financial incentive or other policy applies to your project.

While the DSIRE staff strives to provide the best information possible, the DSIRE staff, the N.C. Solar Center, N.C. State University and the Interstate Renewable Energy Council, Inc. make no representations or warranties, either express or implied, concerning the accuracy, completeness, reliability or suitability of the information. The DSIRE staff, the N.C. Solar Center, N.C. State University and the Interstate Renewable Energy Council, Inc. disclaim all liability of any kind arising out of your use or misuse of the information contained or referenced on DSIRE Web pages.

Copyright 2013 - 2014 North Carolina State University, under NREL Subcontract No. XEU-0-99515-01. Permission granted only for personal or educational use, or for use by or on behalf of the U.S. government. North Carolina State University prohibits the unauthorized display, reproduction, sale, and/or distribution of all or portions of the content of the Database of State Incentives for Renewables and Efficiency (DSIRE) without prior, written consent.