A lot of large and older televisions use between 400 and 1100 watts and the electric company only get suspicious if you have a sudden and constant spike in your electric usage that is above 5000-10000+ watts.
Lets say a normal everyday non smoker type person goes out on a shopping spree and buys himself a secondhand 42" plasma screen,the older screens use an average of 803watts new ones between 300-400,he buys himself a 2kw air conditioner because he wants nice clean cool air,he buys a new top of the range pc and all the extra gadgets to go with it.
Many computers have 500watt or much higher power supply's add a monitor/router/printer scanner and speakers/stereo etc. and your talking 1100+ watts just to run a pc.
So this spikes his bill by an average of getting on towards 4kw,do you really think the electric company are going to ring the police because joe bloggs bill has gone up?
A lot of this is speculative paranoia the electric company's only get involved when there is a highly noticeable extra amount of usage.
The moral of my waffle is don't be so scared about this shit unless your a big boy and your going pro its an irrelevant factor in your stealth.
Using even 2000 watts of light will not even make the electric board look twice in this day and age of technology