SPI Lighting is an independent, privately held company headquartered in Mequon, Wisconsin. With its state-of-the-art office, components manufacturing and assembly facilities; SPI is equipped to meet the requirements of almost any lighting project. In the mid-1970s, SPI pioneered the use of HID lamps for indirect lighting. Since the company’s current owners took over in 1987, SPI has emerged as the recognized leader in high-performance ambient illumination. The addition of Advent Lighting in 1999 further strengthened SPI’s offering in the architectural lighting market.

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