Located at High Falls, this plant often comes up in discussions of potential structures to explore. Little is known about access to the site. However, it is worth noting that tar residue at the plant may pose a health risk to would be explorers. It appears that part of the complex is still in use by RG&E to house some auxilliary functions like equipment certification so it's unlikely the property will be totally empty.
I was able to walk around the lower section on a Friday evening without being challenged but there were cars going in and out. I recall a few years ago that some developer was supposed to convert the power plant into some sort of entertainment venue. —MrPhil **Entry is possibly by a "locked gate" near the chain of bars, near the falls. If you are small enough to get in, you can slip between the gate. I am 6'0" and 175lbs, and wasa ble to get through with no stuggle.
Once through you must traverse to the top of the roof, which you can climb to. Come up to a catwalk, and go across it. Caution should be used when crossing it, as it is very beaten. You will find a door; climb up a few pipes to get to it and BAM!
you're in! Enjoy! The inside is still powered, but has many old appliances, motors, paperwork, ect..