Campus Solarization

Background

ASU's first installation of a solar photovoltaic system (PV) was completed in 2004 on the top level of Tyler Street Parking Structure. The system produces approximately 30 kW of electrical energy and shades 44 parking spaces. It was installed as part of Phase I of the Energy Performance Contract. It is owned and operated by ASU, and its output provides enough electricity to power the daytime lighting in the structure.

During spring semester of 2006, three students from course ATE 550, Passive Heating and Cooling, conducted a survey of 38 Tempe campus rooftops. The survey, led by Professor Harvey Bryan, included a condition assessment, feasibility of installation (e.g. orientation, mounting, shading), and indicated that 25 of the 38 rooftops analyzed were appropriate for some type of PV system. The study indicated a potential for solar production of more than 4 MW on the 25 rooftops. ASU facilities staff completed the analysis of the remaining roofs on the Tempe campus and has estimated the total potential of solar energy to be more than 7 MW. The installation of the total solar capability is anticipated to take 3-5 years to achieve, taking into account timelines for project development, potential roof maintenance, and installation. To give some perspective, 1MW of solar power can sustain about 165 average American homes, or 2 to 3 office/classroom buildings on campus.

In October 2007, ASU began planning for a 150 kW PV system on the roof of Biodesign A and B. This commitment to install the PV system on Biodesign A and B provided the necessary points for the building to receive LEED-Platinum certification - the first in Arizona. The system, which will be owned and operated by ASU, is being installed by APSES as part of their energy performance contract. The installation is nearly complete and it is anticipated to be operational by January 31, 2009.

In January 2008, ASU issued an RFP for solar developers to propose installation of developer-owned solar systems on ASU's campuses. This solicitation resulted in ASU executing Master Agreements with three solar developers in June 2008: SolEquity; Honeywell; and Independent Energy Group (IEG).

The basis of the agreement is for the solar developer to install, own, and operate the solar systems. This allows the solar developers to benefit from the solar tax credits, ASU as a state institution cannot. ASU will pay for the energy produced at a negotiated fixed rate for a minimum of 15 years, at which time the ownership and operations of the solar systems will transfer to ASU. According to Arizona Public Service, ASU can expect additional increases in energy cost over the next several years in addition to the approximate 40% increases that have occurred over the last 3 years. This makes the solarization project not only environmentally sound but economically viable.

The campus solarization project is divided into multiple phases. The first phase of the project is complete. Click on updates for specific information.

For more information, please contact Ray Tena at 480.965.1835.

Photos

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