On September 8th, 2023 ETEM acquired the Hollow Rock property from Energy Harbor.  The overall footprint is 935 acres, approximately 2.5 miles west of the Sammis Plant and connected to the Plant by a conveyor system.

​

The Hollow Rock property offers significant potential for a large-scale expansion of the Sammis energy generation and data center redevelopment.

​

The Hollow Rock Landfill onsite is a Class III Residual Waste Landfill.  The permitted disposal area is approximately 142 acres divided into 14 cells.  Cells 1-4 are full and capped with intermediate cover. Cell 5 is active. Cells 1-5 cover approximately 55 acres.  

​

ETEM is currently beneficially re-using the gypsum stored at the site.