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As of Thursday of last week the ridge vents were completely installed and all of the old vents were removed, holes patched and new shingles applied.  Since then I've been monitoring my attic temperature in relation to the outside temperature at various times during the day.  I also did some monitoring of my attic temperature prior to the ridge row venting going in which of course was necessary or the measurements I took afterwards would be meaningless.

Here's what I've found:

• My attic is always at least seven degrees cooler than it was prior to the ridge vent being installed.  How did this happen you may ask?  Well my house had a signifigant amount of soffit venting, in the form of hardi soffit, that I was not taking full advantage of with the old round passive vents.  These round vents that were installed allowed for probably the minimum amount of passive ventilation that is required for my size house/attic.  Most builders construct to code, and this is not a bad thing, but it doesn't mean it can't be improved upon which is what the large amount of soffit venting combined with the ridge vent has allowed me to do.  I now move much more air through my attic and the ridge row venting is situated at the peak of my roof which is where the hottest air sits.
• The attic cools down much quicker in evening.  It essentially follows the outside temperature throughout the day by 5-13 degrees.  In the early morning up through about 8 or 9 am it is actually cooler in the attic than outside which never happened, except in the winter, when I had the other venting.

This morning TXSPCo came back out and they've resumed work on the solar install.  They continue to focus on attaching the solar racking system and things seem to be moving along.