Our guest is Hilliard resident, electrician and substation safety specialist Doug Williams. Together, we convened to discuss and examine Amazon’s decision to power its Scioto Darby data center using what could become the largest fuel cell installation in the United States. Williams, an AEP employee speaking strictly in a personal capacity, offered rare technical insight into how such a system functions and what it could mean for residents, the grid, and Hilliard’s long-term infrastructure.
How the Original Plan Changed
Originally, the Scioto Darby location was to be powered directly from AEP’s regional transmission lines which are part of the 345,000-volt grid backbone passing through the city. That design would have tied Amazon Web Services (AWS) into local substations, sharing electricity with surrounding neighborhoods.
The switch to a large on-site fuel cell shifts that model: Amazon will now generate most of its own power on the property, drawing from a proposed 8-inch gas pipeline rather than primarily from the grid. The decision effectively removes much of the city’s local regulatory control, since Ohio’s revised code classifies such power generation at the state board level of control.
Reliability and the Grid
Doug describes the balance of electricity generation and load: “You have to protect the grid before you protect the customer.” Large data centers like Amazon’s can cause “voltage drop” or “load shed” events. These sudden surges or dips can damage generators or trip breakers across wide areas. Recovering from these events is costly and time consuming which is why it is such a priority of those responsible for the system to avoid them.
Fuel cells, while new and expensive, give companies instant, on-demand reliability that helps them avoid curtailment requests (temporary shutoffs) that major industrial users like Honda or steel mills may face during grid stress events. In practice, AWS’s constant demand and government-level cloud responsibilities make it an essential service that will likely retain priority power status in emergencies.
Economic and Civic Implications
The hosts emphasized that, for Hilliard, the issue extends beyond engineering. Tax abatements, PILOT agreements, and the eventual decommissioning costs of such an installation could have long-term impacts on city finances and schools. Jordan noted that Amazon or its holding companies often sells facilities after abatement periods expire, raising questions about who inherits the obligations if ownership changes hands.
The discussion also raised the fairness issue of “behind-the-meter” generation: by producing their own electricity, mega-users like Amazon reduce their payments into the shared maintenance of public utility infrastructure, effectively passing upkeep costs to residential ratepayers.
Tech Specs
Doug explained that the system will use solid oxide fuel cells, which heat zirconium-based ceramics to over 600°C, separating hydrogen from natural gas to produce electricity. While this process emits carbon dioxide, it avoids sulfur compounds and particulates found in coal or diesel. Efficiency can reach 60%, significantly higher than traditional combustion generation.
Still, the facility’s sheer scale (228 cells totaling 73 MW) means that its CO2 output will be “massive in total, if modest in intensity,” and the installation’s safety and maintenance responsibilities will need to be closely monitored under federal reliability rules (NERC/FERC).
In Closing
We’ll likely have Doug back in the future! Others with important knowledge have already been scheduled and will join us in helping Hilliard process these emerging developments
Resident frustration and outright surprise at the pace of change around these new technologies should make clear to all of us both the scale and opacity of the energy transition now unfolding locally: Hilliard’s future grid stability, environmental balance, and municipal revenue streams are all being rewritten at once, in real time, under the all consuming hum of the data economy.
You can sign a resident organized petition to advocate for government legal intervention and activity HERE or by proceeding to http://riseuphilliard.com
You can also humor Jordan by advocating for ward representation in government with recurring direct public engagement at all levels of decision making.
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