NOTE: This Case Study is currently under Peer Review, and subject to change prior to final publishing as a free-standing webpage on www.CodeInnovations.org.
Washington Middle School Solar Photovoltaic Roof Array Case Study Category: Solar Photovoltaic Sub-Category: PV Solar on Roof Material, Technique, or Technology: Solar Photovoltaic Panels Project Title: Washington Middle School Owner: Olympia School District Building Type: School Square Footage: 99,344 sq. ft. Number of Students: 798 (capacity) Architect: Mahlum Architects General Contractor: Porter Brothers Construction Mechanical Engineer: Abacus Engineers Electrical Engineer: Travis Fitzmaurice Thurston County Permitting Official: Tom Hill Permitting Process Olympia School District filed for an electrical permit for Washington Middle School’s Solar PV array. The permit took a little over four months to be approved. Applicable Code Sections National Electrical Code Article 690-Solar Photovoltaic Systems IMC Chapter 14-Solar Systems Section 1402- Installation IMC Chapter 14-Solar Systems Section 1404- Materials IECC Chapter 4 Section C406.4- On-Site Renewable Energy Abstract Washington Middle School installed a 1.1 KW solar photovoltaic array on the roof of the library. The permit for the panels took over four months to be approved. The panels were installed as part of the Washington State Senate Bill 5509. The panels offset energy costs throughout the school. Narrative Washington Middle School was a pioneering project for green building in Washington State. It was the first public school built after Senate Bill 5509 was signed into law by Governor Christine Gregoire in 2005. The law states that any publicly funded building over 5,000 square feet must be built in accordance with current green building practices and meet LEED (Leadership in Energy and Environmental Design) standards. Washington Middle School, in designing their new building, wanted from the start to reduce their demand on the traditional power grid, as well as reduce any externalities that come with its use. To do so, Olympia School District and WMS planned to incorporate a 10 KW solar photovoltaic array on the roof of their new library. The cost of this solar photovoltaic system was initially supposed to be subsidized by the Bonneville Environmental Foundation (BEF).
Unfortunately, by the time WMS requested funding, BEF had already allocated the majority of its funding to other schools for their solar projects. Since they couldn’t muster the funds to install the desired 10 KW array, WMS and OSD decided to make WMS “solar ready” instead. Now, the library roof is structurally ready to support the weight of a 10+ KW solar array, and the school has all of the necessary electrical wiring ready to go whenever they decide to install solar photovoltaics. So now, whenever Washington Middle School can afford more solar panels, the roof and the school’s electrical system are ready to handle them. After their first year of occupancy, a 1.1 KW solar PV array was installed on the library roof, funded by PSE and BEF in the “Solar 4R Schools” program. In the second and third years of the schools occupancy, it has generated 2366 KWH total, saving the school about $53 a year. The 1.1 KW system (and possibly all the “solar ready” work) cost the school a total of $20,000. Resources and References Tom Hill-Building Official-City of Olympia What Makes it Green?: Washington Middle School. Retrieved from: http://wmig.aiaseattle.org/node/75 Post-Occupancy Evaluation Report: Washington Middle School. Published August, 2009. Prepared by Blackbird Studio. Contributors: Aaron Rakoz Tyler Howard Ellen Zito Elizabeth Sauer
Washington Middle School Solar Photovoltaic Roof Array Case Study ...
NOTE: This Case Study is currently under Peer Review, and subject to change prior to final publishing as a free-standing webpage on www.CodeInnovation...
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