This bulb could hold the secrets to long-lasting energy.

The Centennial Bulb, as it's called by the Livermore-Pleasanton Fire Department, will celebrate its 110th year on June 18, making it the longest living light bulb in the world. And it doesn't seem to be going out anytime soon.

Remarkably, no one seems to have a clue as to why the bulb has managed to stay on so long, according to the BBC. Though it's a 60 Watt bulb only running at about 4 Watts, its outstanding long life is still unbelievable.

The legendary bulb was manufactured by the Shelby Electric Company of Ohio and has served a number of city fire department facilities since it was first used in 1901. It currently resides at the fire department's Station 6.

According to the city's website, both the Guinness Book of World Records and Ripley’s Believe It-Or-Not have certified its authenticity.

The city of Livermore will commemorate the anniversary on June 18 with a community celebration.

The bulb also has a livecam that refreshes every 10 seconds, which you can see here.