According to ASHRAE 90.1, not less than __% of permanently installed lighting fixtures shall use lamps with an efficacy of at least 55 Lm/W or have a total luminaries efficacy of at least 45 Lm/W.

According to ASHRAE 90.1, not less than __% of permanently installed lighting fixtures shall use lamps with an efficacy of at least 55 Lm/W or have a total luminaries efficacy of at least 45 Lm/W.