For many applications indoors and out, LED fixtures offer clear efficiency advantages. But there are few generalities; quality ranges wildly and misinformation is thick. So what's the ultimate in LED lighting today? While the best LED fixtures can provide 40-60% efficiency savings, our speakers are combining the best fixtures with the smartest controls to drive total energy savings to 80-90% or more — i.e., within the range of what we need to avert the most catastrophic effects of climate change. Paying close attention to task and time, these cutting-edge approaches reveal a whole new way of looking at lighting — and may require the training of a whole new generation of technicians.