Watched this when I was very very young and every now and then it comes to my head, I search for it but never manage to find it.

I remember that it was one of those 90s horror series for teenagers, like Goosebumps, Are You Afraid of the Dark?, etc, where each episode is a stand-alone.

This ep in particular featured a cabin with a creature that I believe sucked people's vital energy, making them grow older quickly. I think the monster was also vulnerable to light, so the cabin was very dark.

I don't remember many plot points but I think two siblings (a boy and a girl) somehow end up there, and the climax of the episode, as far as I remember, involved the brother trying to turn the cabin's generator on while the monster approaches his sister inside the cabin.

It's probably been almost two decades so my memory may be failing a bit, but if anyone has any clues please let me know!!