The Tulsa Expo Square is one of the largest clearspan buildings in the world, and plays host to the widely acclaimed Chili Bowl Midget Nationals. Every January the event boasts over 15,000 spectators and attracts NASCAR and USAC drivers from around the country. In preparation for this year's event, the Square went through a major renovation, and featured enhanced lighting. As a result, the Tulsa Expo Square moved forward with installing five hundred and thirty-nine 400 watt, variable dimming EverLast® high bay fixtures in the winter of 2011. The fixtures replaced 1000w Metal Halides throughout the Square delivering a savings of approximately 1.5 million kilowatt hours, and over $100,000 a year.
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