I do not beleive that OFA has a kennel rate for listing Penn Hip results. I checked into this a while ago since i do both. I was upset that it cost so much to list the Penn Hip results that i never bothered to send them in to OFA.
The Pawcatuck River LRC created a FREE PennHIP database a number of years ago. I have never understood why it did not take off. I put up a number of my dogs because I felt it could provide useful information about my dogs' sires & dams. I still think it has the potential to do that for all labs.
I urge people, whose dogs have been evaluated with PennHIP, to add their information to the database. It would be a huge help to everyone. Here is the address: http://pennhip.prlrc.org/pennhip/ Maybe the time is right and the database can be turned into the wonderful tool it could be.