Okay so I've been lurking here for a while and wanted to finally share my experience because I wish I'd found a post like this before my first attempt. I took the Certified Lighting Efficiency Expert exam back in January, bombed it with a 61 (passing is 70), tried again in March and missed by two points. I was seriously ready to give up on the whole thing.
What finally clicked for me was ditching the textbook-only approach and actually doing timed CLEE practice test sets. I found that the real exam leans way harder on lighting calculations and energy codes than I expected — the ASHRAE 90.1 stuff especially. I put together a study guide focused on those weak spots and drilled them for about three weeks straight, maybe 90 minutes a night after work.
Passed with an 82 last month. If you're prepping right now, happy to share my exam tips or talk through the calculation sections. What's tripping you up the most?