It's located on the Deschutes River off of Highway 126, west of Redmond.
In 1992, the Historic Landmarks Commission designated the plant as a historic site. But now the power company is arguing the whole site is not protected, just specific buildings on the site.
They made their case before Deschutes County Commissioners this week.
Jeff Lovinger is representating Pacific Corp.
"What the '92 board said I believe you can only conclude that is protected three structures. Maye they should have protected more, COID made some good arguments on this. But that's for another day. You can look at that down the road. But right now we're looking at what the '92 board meant and have the fairest read as we can."
The County Commissioners plan to visit the Cline Falls Power Plant site next week and hope to make a final decision on the plant's historic designation by the end of November.