Depending on where you live the heating might be nice.

In the US people use roughly 10 000 kwh per year.

Say we have a 40 watt bulb, say it burns on average 5 hours per day or 200 wh. In 365 days that would be 72 kwh which at 16 cents per kwh is $11.52 or 0.73% of the annual power consumption.

Say one uses 5 light bulbs. Something around $57.60. Say leds use only 25% of the power = $14.40 for $43.2 saved.

Well over 10 cents per day.

What are you going to spend your 10 cents on? lol