The Data Center Boom Is Creating a New Market for Obsolete Industrial Sites

Yesterday's Industrial Infrastructure Could Become Tomorrow's AI Real Estate

For decades, former factories, power plants, mills, and other heavy industrial properties presented a familiar challenge for commercial real estate.

The buildings were obsolete. Environmental liabilities could be significant. Redevelopment was complicated. And the infrastructure originally built to support manufacturing operations was often difficult to repurpose for conventional commercial uses.

The data center boom is beginning to change that equation.

As artificial intelligence and cloud computing drive unprecedented demand for digital infrastructure, developers are searching for sites with something increasingly difficult to secure: large-scale access to power and the infrastructure required to deliver it.

That search is putting a new category of real estate back into play.

Legacy industrial sites.

Former power plants, manufacturing campuses, mills, and brownfield properties can possess characteristics that would be extraordinarily expensive and time-consuming to recreate on undeveloped land: transmission infrastructure, substations, industrial zoning, water access, transportation connections, established rights of way, and large development footprints.

The federal government has taken notice. In 2026, the U.S. Environmental Protection Agency published specific guidance for evaluating brownfield and Superfund properties for redevelopment as AI data centers, noting that large industrial sites with existing infrastructure and industrial zoning may be attractive candidates.

For data center real estate, the implication is significant.

Some of the industry's next development opportunities may not begin with vacant land.

They may begin with properties the previous economy left behind.

Power Scarcity Is Changing What Developers Consider Valuable

The shift begins with power.

For years, inexpensive greenfield land offered an attractive path for large data center development. Developers could secure substantial acreage and design campuses from the ground up.

But the economics of site selection have changed.

The challenge today is often not finding land.

It is finding land with a credible path to hundreds of megawatts of electricity.

Building new transmission infrastructure, substations, and utility connections can introduce years of additional planning and development work. In some markets, those timelines can determine whether a project is commercially viable at all.

Legacy industrial sites can offer a fundamentally different starting point.

Many were originally developed for power-intensive operations.

Steel.

Chemicals.

Paper.

Automotive manufacturing.

Heavy industry.

Power generation itself.

Those uses required substantial electrical, water, transportation, and utility infrastructure.

The original business may have disappeared.

The infrastructure did not necessarily disappear with it.

That residual infrastructure can transform what appears to be obsolete industrial real estate into a strategically interesting data center opportunity.

Former Power Plants Are an Obvious Target

Perhaps nowhere is this trend clearer than at retired power generation sites.

Consider Homer City, Pennsylvania.

The former Homer City Generating Station was once Pennsylvania's largest coal-burning power plant. The site is now being redeveloped into a more than 3,200-acre data center campus designed for AI and high-performance computing, supported by plans for up to 4.5 GW of new power generation.

In Kansas City, Kansas, another redevelopment plan targets the former Quindaro Power Station. PowerTransitions announced plans for a roughly $2.4 billion, 200 MW data center campus on the former fossil-fuel plant property, with the redevelopment intended to make use of the site's legacy infrastructure.

These projects illustrate the underlying real estate logic.

A retired power plant may no longer have value as a conventional generation asset.

But it may still possess some of the exact characteristics data center developers are struggling to find elsewhere.

Transmission access.

Utility infrastructure.

Industrial land use.

Water infrastructure.

Road access.

Large sites designed around intensive energy consumption.

The highest-value reuse may therefore have little resemblance to the property's original purpose.

Former Factories Are Entering the Conversation Too

The opportunity extends beyond power plants.

In London, recently approved data center developments include a project on a brownfield property in Hounslow and another on the site of the former Honey Monster food factory in Southall.

In Wisconsin Rapids, Wisconsin, the former paper mill property has attracted data center interest specifically because of its existing electrical capabilities and manufacturing history, according to the city.

Near Buffalo, New York, plans have been proposed for a 300 MW data center on approximately 140 acres previously occupied by a coke manufacturing operation with an industrial history stretching back more than a century.

These are very different properties in very different markets.

But they share an important characteristic:

they were already infrastructure-intensive real estate.

That is becoming increasingly relevant.

Obsolescence Can Look Different to a Data Center Buyer

Commercial real estate traditionally evaluates obsolete properties according to their ability to support conventional reuse.

Can the warehouse be modernized?

Can the factory become logistics space?

Can the site support residential or mixed-use redevelopment?

Data centers introduce another valuation framework.

A developer may care far less about the existing building than about what sits underneath, beside, and around it.

The electrical infrastructure may matter more than the structure.

The substation may matter more than the warehouse.

The transmission connection may matter more than the floorplate.

The zoning may matter more than the façade.

In extreme cases, the existing improvements may have little or even negative value while the underlying infrastructure position creates the investment thesis.

That changes how owners, investors, and brokers should evaluate legacy industrial assets.

The Infrastructure Already in Place Can Be the Real Asset

This is where the brownfield opportunity becomes particularly interesting.

According to the EPA's 2026 guidance, candidate sites may benefit from grid capacity, substation access, multiple power sources, water availability, transportation access, and enough acreage for substations, cooling, stormwater infrastructure, security, and phased expansion. The agency notes that campus-style developments around 100 MW will typically need substantial land, with additional acreage often desired for supporting infrastructure and future growth.

Not every former industrial site will satisfy those requirements.

Far from it.

But sites that do can offer something increasingly valuable:

a head start.

Instead of beginning with an empty parcel and determining how infrastructure can eventually reach it, developers may begin with a property already embedded within an established infrastructure network.

That distinction can materially change the development strategy.

Brownfield Does Not Mean Development-Ready

There is an important counterpoint.

Industrial history creates opportunity precisely because these properties supported intensive previous uses.

That same history can create significant risk.

Former manufacturing and power-generation sites may carry environmental liabilities involving contaminated soil, groundwater, hazardous materials, storage tanks, legacy waste, or other remediation requirements.

Developers therefore cannot assume that existing infrastructure automatically makes a property attractive.

Environmental due diligence becomes central to the transaction.

The EPA emphasizes that successful reuse requires alignment with cleanup standards, maintenance of environmental controls, appropriate planning, and careful community engagement.

Environmental and legal specialists likewise point to the importance of allocating legacy contamination risk between sellers and buyers and understanding post-closing obligations before redevelopment proceeds.

For data center investors, this creates a different risk-reward equation.

A greenfield site may require more infrastructure development.

A brownfield site may require more environmental management.

The correct choice depends on which risks can be controlled most effectively.

Speed-to-Power Could Change Brownfield Economics

This is ultimately where AI demand becomes relevant to real estate.

AI infrastructure is placing extraordinary pressure on development schedules.

Customers do not simply want capacity.

They want capacity within defined delivery windows.

That increases the potential value of properties where some of the difficult infrastructure work has already occurred.

A site with useful transmission access, industrial entitlements, established utility corridors, or existing water infrastructure could potentially avoid some of the challenges associated with starting from scratch.

That does not mean every brownfield will be faster.

Environmental remediation, demolition, permitting, and infrastructure upgrades can erase those advantages.

But when the conditions align, legacy infrastructure can become a form of embedded development value.

And as time-to-power becomes more valuable, that embedded value becomes easier for the market to recognize.

This Could Create a New Buyer Pool for Industrial Owners

The trend also matters for owners of older industrial properties.

A manufacturing campus that appears functionally obsolete to traditional industrial users may look very different to a digital infrastructure developer.

The same applies to retired generating stations, paper mills, former processing facilities, and other power-intensive properties.

That creates the possibility of a new buyer pool.

Owners should not assume that a site's highest and best use will resemble its historical use.

Instead, they may need to understand:

What electrical infrastructure remains?

What utility rights exist?

How much power could realistically be delivered?

What is the current zoning?

What environmental conditions affect redevelopment?

Is fiber accessible?

How much contiguous developable acreage exists?

Could the property support future expansion?

Those questions may reveal value that conventional industrial underwriting misses.

Communities Face a Different Redevelopment Equation

For municipalities, the trend presents opportunities and challenges.

Large obsolete industrial sites can remain underutilized for decades after their original economic purpose disappears.

Data center redevelopment can potentially return those properties to productive use while generating investment and tax revenue.

The EPA points to Meta's Forest City, North Carolina, development as one example where two former textile and manufacturing brownfield properties were converted for data center use with support from brownfield assessment programs.

But redevelopment also introduces new infrastructure questions.

Power.

Water.

Noise.

Backup generation.

Traffic during construction.

Environmental remediation.

Community impact.

A successful transition therefore requires more than finding a developer willing to acquire the property.

It requires aligning the new infrastructure use with the surrounding community and existing environmental obligations.

The Federal Government Is Signaling That This Market Matters

One of the strongest indications that industrial reuse is moving beyond isolated projects is the growing policy attention around it.

The EPA's dedicated 2026 guidance explicitly addresses redevelopment of Superfund and brownfield properties as AI data centers.

And in July 2026, the U.S. Department of Energy announced a partnership involving Brookfield, NextEra Energy and regional utilities to redevelop portions of the DOE's Paducah site in western Kentucky into a data center campus accompanied by new energy infrastructure. The department described the planned private investment as exceeding $100 billion.

That is a significant signal.

The intersection of legacy industrial land, energy infrastructure and AI development is becoming large enough to influence national infrastructure strategy.

Data Center Site Selection May Be Entering a Reuse Era

Greenfield development will remain essential.

The scale of projected data center demand is simply too large for redevelopment opportunities to replace new campus construction.

But brownfields can become a more meaningful part of the site-selection universe.

Particularly when they offer something greenfield sites struggle to provide:

existing infrastructure.

This could encourage developers to examine assets that would previously have been screened out early in the process.

Retired power stations.

Former manufacturing campuses.

Decommissioned mills.

Large industrial brownfields.

Properties adjacent to major transmission infrastructure.

The buildings may be obsolete.

The infrastructure position may not be.

Yesterday's Industrial Sites May Hold Tomorrow's Digital Capacity

The AI infrastructure boom is changing more than demand for data centers.

It is changing how the market defines valuable real estate.

A former factory is not automatically a data center site.

Neither is a retired power plant.

Environmental conditions, power availability, fiber, zoning, water, community acceptance, site configuration, and development economics still determine whether a project is viable.

But the growing scarcity of power and development-ready land is forcing developers to look at legacy properties differently.

And that creates an intriguing real estate shift.

Some properties that lost their economic purpose decades ago may possess infrastructure that is suddenly relevant again.

The smokestacks may be gone.

The assembly lines may be silent.

But the substations, transmission corridors, utility connections, and industrial land remain.

In the next phase of the data center boom, those remnants of the industrial economy could become the foundation of the digital one.