Hello and thanks for using JA! Happy New Year too!
There is a bonus depreciation deduction in 2011 that allows you to deduct up to 100% of the cost of new equipment purchased. there is also whats known as a section 179 deduction that allows you to expense up to $250,000 for equipment purchases in 2011.
There is no special tax credit other than these deductions I just mentioned.
If this is what you were looking for kindly accept my answer.
Are you asking for tax credits for Pennsylvania or Federal tax credits?
I'm stepping out for a while now, I'll check back later.