How many acres is the site/how many acres are developable?

ETEM owns over 1,000 acres of land across Sammis and Hollow Rock. Sammis has 170 acres ready for development. Hollow Rock has 160 acres ready for development and an additional 300 adjacent developable acres.

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What are ETEM’s plans for redevelopment of the site?

ETEM plans to redevelop Sammis and Hollow Rock into an energy generation and data center campus. ETEM plans to power the data center campus via utility power from existing onsite substations and through the construction of new onsite firm generation, supporting an all-of-the-above approach to grid reliability. ETEM has engaged Zayo Group, Comcast, and Lumen Technologies to develop fiber infrastructure compatible with a hyperscale data center.

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What power infrastructure is available at the site?

There are 138kV (800MW) and 345kV (1,700MW) FirstEnergy-owned substations adjacent to Sammis. The substations have 10 connected ATSI-owned transmission lines. Sammis and Hollow Rock are in AEP Ohio’s power service territory. ETEM owns two 345kV to 13.8kV transformers rated at 195 and 135 MVA, five 13.8kV – 4.1kV transformers rated at 6250 – 9375 kVA, and three 4.1kV – 480V transformers rated at 1000 and 1500 kVA. All transformers were installed in 2008 and are actively maintained.

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When will the site be ready for construction and what condition will it be in at that time?

ETEM has completed decommissioning activities, including the removal of chemicals and oils, electrical disconnections, civil work associated with coal piles and ponds, asbestos abatement, and other related scope items. Demolition and remediation of Sammis will be completed in Q4 2026. At that time, Sammis will be flat, graded, and configured to support proper drainage.

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What is ETEM’s relationship with the community?

State, regional and local leadership are supportive of the Sammis and Hollow Rock redevelopment, and the State of Ohio has several incentive programs encouraging redevelopment and repowering of brownfield sites as well as incentives to encourage data center and energy development. Sammis and Hollow Rock have been designated as a Priority Investment Area (“PIA”) by the Ohio Department of Development (ODOD). The planned data center and energy generation development will create around 200 permanent full-time jobs and thousands of construction jobs in a community that has been harmed by the decline of the coal industry. The development represents an opportunity to repurpose existing infrastructure, accelerate investment, and deliver economic revitalization in a historically energy-producing region.

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Is the site fully remediated and clean of environmental risk?

ETEM’s coal combustion residuals (CCR) obligations have been closed out and remediation is complete at Sammis. Post-completion environmental obligations will be limited to routine inspections and compliance and reporting requirements associated with active permits.

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Is the site out of the floodplain?

Most of Sammis is clear of the 500-year floodplain. A small area in the Southernmost portion of the site is in the 100-yr and 500-yr floodplains. ETEM’s engineer believes that these areas could be brought out of the floodplains through the addition of moderate fill. Hollow Rock is clear of any flood risk.

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Do you have zoning approvals?

Neither the Village of Stratton nor Jefferson County has adopted a zoning ordinance or building codes, and there are no other known development restrictions applicable to the Sites. ETEM’s 2025 Zoning Report, along with written confirmations from the Jefferson County Planning Board and the Village of Stratton and ER1’s title search, verify the absence of deed restrictions, zoning regulations, building codes or deed restrictions on development.

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When did the power plant retire?

The W.H. Sammis Power Plant ceased operations in 2023, and ETEM acquired the site from Energy Harbor.

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What other valuable infrastructure was retained from the old plant?

There are three rail spurs serving Sammis off the main Norfolk Southern line as well as access to barge cells. Active permits include NPDES, river intake, and onsite wells.