The decorations, the lights, the BILL?! Christmas lights are a fun way to celebrate the season but it’s not free. When it comes to keeping your electric bill low, the type of bulbs you buy can save you from burning away your money.

Christmas light shopping can be overwhelming. LED or incandescent? Mini, C9, C7, or something else? If you can’t decide, determining how much it will cost to run each strand may guide your decision.

While LED light strands tend to cost more at the store, most range from about $30 to $76 compared to the incandescent ranging between $9 and $10. Therefore, incandescent will put a greater strain on your electric bill over time.