 FANUC, a Japanese robotics company, has been operating as a lights-out factory since 2001.Robots are building other robots at a rate of about 50 per 24-hour shift and can run unsupervised for as long as 30 days at a time.“Not only is it lights-out,” says Fanuc vice president Gary Zywiol, “we turn off the air conditioning and heat too.” 
In the Netherlands, Philips uses lights-out manufacturing to produce electric razors, with 128 robots made by Adept Technology.