If you are wondering how the more energy efficient LED light strands compare to the traditional higher wattage bulb strands, click here to go to a really cool calculator for various types of holiday lighting. Just select how many strands of the type of bulb, select how many hours they will be illuminated and it will tell you the cost per day and for a month.
This calculator is based on an average electric rate of 10 cents per kilowatt-hour so actual costs for you may vary based upon your local electrical provider's rates. However it does give you a rough idea of the differences between 100 count LED strands, 100 count mini strands and the larger 25 bulb strands. It is a helpful tool if you want to start making the change over to more energy efficient holiday lights and would like to figure out your savings and pay back time frame. Also, you can compare the cost of LEDs lit for a couple of hours versus leaving them lit all night so check it out and have fun calculating!