not a great question, the ole sum of the parts answer. after asking I refreshed this old brain. you still have a tremendous rate for your power, would love to trade.
I've got a 8.4 cent Wind power generation contract Jan13 to Jan15, current contracts are up around 9-10. Delivery varies, but is currently down to 4 cents. Total = 12.4 cents + $7/mo flat service charge. No complaints.
Of course, in MA part of your bill is paying for the MassSave program...in PA I had to pay for the whole of my retrofit work, and just got a 0% 10 year 'energy loan' to pay for it.