My carpenter took the day off to prepare for a camping trip, so another buddy helped me unscrew one of the pegboard panels, plug a power cord into the socket, run the cord up to the top of the pegboard, and screw the pegboard back on. The carpenter didn't like the idea but 'tis easier to get forgiveness than permission.
Wired the cord into two weather-proof boxes I had laying around - one with a duplex switch and the other with a GFCI receptacle. One switch for the under-cabinet lights and the other for the GFCI.
Found out that the cabinets stick out a little bit too far - I have some bumps on my forehead.
The A/C unit keeps the humidity down enough that one can sit in the garage and admire one's handiwork in relative comfort but I have to open the door into the house if any work is being done. Insulating the ceiling should help but it's going to be a while before I feel like doing it.
This old man is tired. I'm glad the carpenter will be taking a few days off.