We installed window tint from SnapTint on our windows and this cut down on the heat and glare tremendously. I am not sure why window tints are never mentioned in the energy saving tips but I can say from experience that it is inexpensive and a do it yourself project. We have already seen a savings on our electric bill as our AC is not running as much after we installed the window tint. This is a great way to save energy and money.
Beakus- good tip! Here is a tip that works for me...........I insulate my windows. It is between the glass and the blinds. It saves me about 10-15% on my electric bill. A lot of heat comes in through the windows. So insulating them just makes sense to me. I am not worried about the looks from the outside. From the outside is looks like the window is boarded up from the inside.
Don't forget to cover your windows with plastic to seal out the air flow.
I believe the best tip of all was overlooked. People should compare how much they are paying per kilowatt hour of electricity to the rates, fixed or variable, that are offered in our area by many different electricity providers. Go to Texas Power Choice site on the internet to view all the rates. I recently signed up for .10 cents per kilowatt hour for one year after paying in excess of .15 for the last two years.