1w led = 3w fluorescent = 15w incandescent
3w led = 11w fluorescent = 35w incandescent
5w led = 15w fluorescent = 50w incandescent
7w led = 19w fluorescent = 70w incandescent
9w led = 25w fluorescent = 90w incandescent
12w led = 31w fluorescent = 120w incandescent
18w led = 36w fluorescent = 180w incandescent