Home > Pavilion > Ride/Show Technology > Solar Array Early EPCOT Center plans called for a "Solar Energy Pavilion". The proposed pavilion was to incorporate a parabolic "solar collector", though based on what we know of the solar technology of the time, we have to assume that the "collector" would have been more ornamental and illustrative than functional. As plans for the pavilion evolved into what we now know as the Universe of Energy, Imagineers chose a more functional approach, presenting--in the words of the original Theater II film--"today's solar technology." Integrated into the building's roof is an impressive array of photovoltaic cells, which convert sunlight directly into electricity. While perhaps not as far-reaching and futuristic as the solar collector, it was--and remains--a striking architectural element, and a testament to the effective use of current solar technology. Photovoltaic Array Designed and manufactured by the Solar Power Corporation, a subsidiary of Exxon, Universe of Energy's solar array was the largest private solar installation in the world during its construction. Each of the 2,156 aluminum panels contains a total of 36 individual four-inch diameter silicon cells, each capable of producing approximately one watt of electrical energy. A total of almost 80,000 of these cells compose the rooftop array, which covers an area of almost two acres. After analyzing the position of the sun in Orlando throughout the course of a year, it was determined that the cells would receive maximum exposure to the sun year-round if situated in a due south orientation and tilted at 30° from horizontal. Riding on Sunshine During peak sunlight conditions, the solar array is capable of generating approximately 77 kilowatts of DC electrical current (enough power to supply the needs of 15 average homes). This power is run directly into a substation located behind the pavilion where it is then converted to AC current and sent into a utility power grid within the pavilion. From there, the electricity is transmitted to charge plates located atop the two massive turntables within the pavilion's two main theaters where it helps to recharge batteries within the ride's traveling theater vehicles. During the mid 1990s, rising operating costs caused the system to fall into disrepair and eventually disuse. It wasn't until almost a year after the show rehab in 1996 that Disney management decided to bring the entire solar array back to life. After nearly a year of work, all 2,200 solar panels were replaced along with all of the wiring and electrical components of the system. The array was finally rededicated and put back into operation in 1998. Almost two decades after its construction, the solar array still continues to give visitors to the Universe of Energy a "ride on sunshine." Special Thanks We'd like to offer a special "thank you" to Dr. Lao for the artist's rendering and information on the Solar Energy pavilion. For additional credits and information, visit our Credits page.