October is National Clean Energy Action Month, capping off with Dark Matter Day (a day to celebrate and learn about the invisible part of the universe that can't be directly observed by physics) on October 31and, Halloween of course! On Energy.gov, we mark the occasion with Energyweena celebration of energy efficiency tips, tricks and treats to save energy at home as cooler weather lurks just around the corner.

Celebrate Energyween

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Don't be haunted by your energy bill. Our four quick tips could help you save energy and money at home while banishing witches, ghosts and goblins!

Energy Tricks and Treats

Tame Your Haunted House

Shining a Light on Dark Matter

Energyween Activities

Sharing the Fun


  • Read an analysis from NOAA on how the climate changes are impacting pumpkins 🎃.
  • Download spooky science education activities and frightening smartphone wallpaper 🕷 from NOAA.
  • See spooky comets, Halloween celebrations in space, and the ghost 👻 nebula from NASA.
  • Learn how to have a safe and healthy Halloween from USDA.
  • Discover more about the creatures  🦇 that take flight during all Hallows’ Eve with the Forest Service.
  • Find out from the CDC how to keep your eyes safe while dressing up this Halloween.