we are watching vt20 for nearly 8 to 10 hours daily, which includes 2 hours of BD daily. This has resulted in an average increase of just 200rs in monthly bills, and this includes the increase in latest power tariffs from dept. considering all this i can say my bills has increased by around 160 bucks for my vt20 usage at an average usage of 8 hours a day:yahoo:
Yup, that is the max we can think of even with extreme usage. So power consumption is not really much of a concerns except for when using the TV with a Home UPS (like I will do when I buy it). Even then the difference is marginal between Panasonic and Samsung and I still find Samsung to be a best bet though Panasonic seems to have a more "greed" factor on VT20