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Growing data-center demand does not require every new server hall to occupy undisturbed land. The most credible alternatives are to reuse suitable brownfields and former industrial properties, repurpose retired power-plant sites, convert existing buildings, distribute smaller facilities near users, and coordinate large loads with storage, flexible operations, renewable generation and practical heat-reuse networks.
None of these labels guarantees a safe, affordable or approvable project. A candidate still needs deliverable electricity, transmission and distribution capacity, dependable cooling water, a realistic cleanup plan, workable zoning, an achievable permitting schedule and clear community benefits. The right question is not “Is this a brownfield or an old power plant?” but “Can this particular site support the required workload without shifting unacceptable risks to people or ecosystems?”
Why alternatives are needed now
Data-center electricity use is rising quickly because of cloud services, accelerated computing and artificial-intelligence workloads. The U.S. Department of Energy, summarizing the Lawrence Berkeley National Laboratory’s 2024 analysis, estimates that U.S. data centers used about 4.4% of total electricity in 2023. The estimated share could reach approximately 6.7% to 12% by 2028. In absolute terms, the estimate rose from 58 TWh in 2014 to 176 TWh in 2023, with a projected 325 to 580 TWh in 2028.
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Those figures describe the United States and should not be treated as a worldwide forecast. The European Commission, citing the International Energy Agency’s Energy and AI, says data centers accounted for about 1.5% of global annual electricity consumption, or roughly 415 TWh, and could reach 945 TWh by 2030. The European Union also aims to triple data-center capacity by 2035. These targets increase pressure to find sites and grid arrangements that do not consume every remaining parcel of sensitive undeveloped land.
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The U.S. Geological Survey’s 2026 plain-language summary projects as much as 12% growth in data-center energy use by 2028. That is a growth projection, not the same measure as the DOE/LBNL percentages of total U.S. electricity. In a spatial analysis covering 11 western states and Alaska, USGS identified 771 artificial-intelligence data centers and more than 3,300 power plants. It also reported that permitting and regulatory reviews can take 18–24 months, although no individual project is guaranteed that schedule.
Jennifer M. Granholm, then U.S. energy secretary, said in a 20 December 2024 Department of Energy release: “We can meet this growth with clean energy.” The statement expresses the department’s position; it does not mean that clean generation, transmission or permits are already available at a particular location.
What makes a non-sensitive site genuinely viable?
Land reuse is only one part of a data-center siting decision. USGS identifies reliable energy access, available capacity and deliverability, water for year-round cooling and regulatory timing as joint constraints. A 2026 RAND framework similarly evaluates power availability, infrastructure readiness, environmental risk and governance.
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- Cooling and water: Cooling design may require substantial water, especially in warm climates. Supply must be assessed against ecological, municipal, industrial and agricultural demand, not merely against the presence of a river, aquifer or treatment plant.
- Cleanup and liability: Former industrial and energy sites can have soil, groundwater, asbestos, coal ash, petroleum or other contamination. Cleanup standards, institutional controls, caps and long-term monitoring must remain compatible with construction and operation.
- Permits and schedule: Zoning, air and water permits, environmental reviews, building approvals, utility agreements and community processes can determine whether a theoretically attractive site is usable on the required date.
- Community outcomes: Traffic, noise, backup generation, water withdrawals, land value, jobs, tax revenue and public-service costs should be disclosed and negotiated rather than assumed to be benefits.
Can data centers be built on brownfields?
Yes, where investigation and cleanup planning show that redevelopment can protect people and the environment. The U.S. Environmental Protection Agency says a large brownfield with existing infrastructure and industrial zoning may be attractive for data-center redevelopment. Previously developed land can reduce greenfield disturbance and may shorten some construction work because roads, utilities or foundations already exist.
What a brownfield screen should establish
- Identify the site history. Review former manufacturing, textile, chemical, fuel, waste-handling and other uses, plus adjoining properties that may have contributed contamination.
- Map contamination and controls. Determine whether soil or groundwater investigations are complete, which contaminants remain, whether vapor intrusion is possible and whether caps, barriers or deed restrictions are required.
- Match the design to the remedy. Piles, basements, utility trenches, storm-water works and cooling-water systems must not damage a cap or create new exposure pathways. Engineering controls need inspection, maintenance and funding after the data center opens.
- Confirm utilities independently. Existing industrial service does not establish that the site can receive a high, continuous load or that water and wastewater systems can handle it.
- Engage the community early. EPA emphasizes planning, public engagement, cleanup standards, conservation and environmental protection. Residents should be able to examine likely noise, water, traffic and emergency plans before key approvals.
EPA describes a data-center redevelopment by Meta on two former textile and manufacturing properties in Forest City, North Carolina. The example demonstrates that reuse is possible; it does not certify every brownfield as suitable or imply that contamination is harmless.
EPA’s brownfield redevelopment mapper can help with initial screening of site characteristics. It is a screening aid, not a substitute for a Phase I and Phase II environmental assessment, remedy design, geotechnical work, utility studies or permits.
Can a Superfund property host a data center?
Sometimes. EPA says redevelopment may be possible while cleanup is still under way, provided the proposed use aligns with cleanup standards and preserves controls such as caps or barriers. The distinction from an ordinary brownfield is important: a Superfund site may have formally managed remedies, enforceable restrictions and continuing federal or state oversight.
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Conditions that must be resolved
- The intended buildings, foundations, utility routes and storm-water systems must be consistent with the approved remedy.
- Construction must not spread contamination or interfere with monitoring wells, treatment systems or access needed for future work.
- Long-term obligations, including inspection and maintenance of caps or barriers, need a responsible owner and funding mechanism.
- Workers, visitors and neighboring residents need exposure protections appropriate to the contaminants and remaining pathways.
- The project schedule must allow for agency approvals; a property that appears available may remain impractical if remedy decisions are unresolved.
A Superfund designation therefore signals the need for more structured due diligence, not a blanket prohibition or a shortcut around environmental review.
What about retired or retiring power-plant sites?
Retired coal and other power-plant locations can offer large parcels, industrial zoning, transmission corridors, substations, roads and a workforce familiar with complex energy operations. The Department of Energy identifies reuse of retired coal-facility infrastructure and energy-community redevelopment as potential strategies for accommodating new loads.
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- Durability: Made of high quality cold rolled steel holds up to 110lb (50kg) (Easy Assembly Required)
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The decisive test is deliverable capacity, not the site’s history of producing electricity. A closed plant may have lost its generator, retired its interconnection rights, suffered equipment deterioration or require major transmission work. Ownership of a substation or line also does not guarantee spare capacity, acceptable reliability or a completed interconnection agreement.
Power-plant questions to answer
- What equipment remains, who owns it and what condition is it in?
- How much firm capacity can the transmission and distribution system deliver after existing commitments and seasonal constraints?
- Would the data center rely on grid power, new generation, storage, or a combination, and what emissions permits would each option require?
- What remediation is needed for coal ash, ash ponds, petroleum, cooling systems, asbestos and demolition waste?
- Will new cooling-water withdrawals conflict with river, lake, agricultural or municipal uses?
- Who pays for interconnection, protection upgrades, transmission reinforcement and site cleanup?
Repurposing a power site can reduce land disturbance, but it does not erase remediation, water, air-quality or community impacts.
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Existing warehouses, industrial buildings, offices and other structures may avoid clearing undeveloped land and can sometimes be converted faster than a new campus. A building-load coordination framework described by the National Laboratory of the Rockies treats existing structures, energy efficiency and flexible building loads as parts of an integrated approach. The framework is a laboratory proposal, not a universal feasibility certification.
Building-conversion checks
- Structure: Verify floor loading, vibration tolerance, roof capacity, seismic requirements, fire separation and space for electrical and mechanical equipment.
- Cooling: Check whether the envelope, floor-to-floor height, heat rejection and water or air systems can support the intended rack density.
- Electrical service: Assess the feeder, transformer, switchgear, backup generation, fault levels and room for expansion rather than relying on the building’s former load.
- Operations: Provide secure fiber routes, physical security, maintenance access, fuel logistics and resilience against local outages or extreme weather.
- Neighborhood fit: Examine noise, generator testing, truck movements, nighttime lighting and emergency response in a denser setting.
Existing construction may reduce embodied materials and land conversion, but a deep retrofit can cost more and take longer than a purpose-built facility if the electrical and cooling systems are fundamentally unsuitable.
Can distributed or edge facilities reduce land pressure?
Distributed facilities place computing closer to users instead of concentrating every workload in one large campus. This can help applications with strict latency requirements, local data rules or resilience needs. A 2025 National Laboratory of the Rockies report abstract predicts that 90% of AI workloads could require multiple low-latency edge facilities under 20 MW by 2030. That is the paper’s prediction, not a settled industry forecast.
Edge capacity can use smaller industrial buildings, telecom sites or other already-developed locations, but “smaller” does not mean impact-free. Several sites may need separate permits, security systems, cooling plants and backup power. Their combined demand can burden distribution feeders even when no single facility approaches a hyperscale campus load.
When edge deployment is a good fit
- Latency-sensitive inference, interactive services or control systems need proximity to users or devices.
- Workloads can be partitioned so that only time-critical processing runs at the edge while bulk training or archival storage remains centralized.
- Local utilities can provide capacity without extensive feeder reinforcement.
- Operators can manage many locations without reducing reliability or cybersecurity.
Network design should therefore compare the land and grid effects of one large site with the aggregate effects of all edge sites, including their interconnections and maintenance travel.
How storage, flexible operation and demand response help
Some data-center loads can shift in time or location. The Department of Energy identifies onsite generation, storage and rate structures among strategies for managing growth. The United Nations Economic Commission for Europe discusses conditional connections, cost-reflective tariffs, flexibility, demand response, storage, heat recovery and renewable co-location.
Useful mechanisms
- Conditional or flexible connections: A facility may receive a connection subject to curtailment during constrained periods, if reliability obligations and customer protections are explicit.
- Battery storage: Batteries can reduce short peaks, provide ride-through or shift selected workloads, but duration, degradation, fire safety and replacement costs matter.
- Workload orchestration: Training, batch analytics and other deferrable jobs can move to hours or locations with lower grid stress. Interactive services generally have less flexibility.
- Demand-response tariffs: Prices or payments can reward measurable reductions, while contracts define notice periods, event frequency and performance penalties.
- Onsite generation: Generators or other resources may improve resilience, but fuel supply, emissions, noise and permitting remain material.
These measures complement siting decisions. They do not make an environmentally unsuitable site acceptable, and they require agreement on who funds storage, grid upgrades and curtailed service.
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When do waste heat and renewable co-location work?
Waste-heat reuse is most plausible when a nearby customer can take heat at the required temperature and schedule. Potential users include district-heating networks, hospitals, campuses, greenhouses and industrial processes. Virginia’s Department of Energy published a 2026 evaluation covering beneficial uses, information exchange among facilities, end users and localities, challenges and estimated infrastructure costs.
Heat-reuse feasibility tests
- Find a committed user. A conceptual nearby demand is not enough; the user needs a durable contract or public plan.
- Match temperature and timing. Server heat may require heat pumps or other upgrading, and demand may be seasonal while computing runs continuously.
- Measure distance and infrastructure. Pipes, heat exchangers, pumps, controls, rights-of-way and backup systems can dominate economics.
- Assign operational responsibility. The data center, utility, municipality and heat customer need clear maintenance, metering and outage arrangements.
- Compare alternatives. A heat network should be evaluated against efficient cooling, other heat sources and the water, electricity and construction it requires.
Renewable co-location can align generation with a new load, but a solar or wind project near a data center is useful only if its output is deliverable when needed or paired with adequate firming. Geographic proximity alone does not provide round-the-clock clean power.
Comparing the main alternatives
| Alternative | Potential advantage | Critical checks and tradeoffs |
|---|---|---|
| Brownfields and former industrial sites | Reuse developed land, industrial zoning and possible infrastructure | Contamination, cleanup controls, power delivery, water, zoning and community priorities |
| Superfund properties | Some sites may be reused under managed cleanup programs | Remedy compatibility, caps or barriers, monitoring, institutional controls and long-term liability |
| Retired power-plant sites | Potential access to transmission corridors, substations, roads and energy-community programs | Actual interconnection capacity, equipment condition and ownership, remediation, water and power-source permits |
| Existing buildings | Less new land disturbance and possible reuse of structures | Floor loading, cooling, electrical service, retrofit cost, fiber, security and neighborhood impacts |
| Distributed edge facilities | Lower latency and less dependence on one large campus | Number of sites, feeder capacity, aggregate demand, operating cost and workload suitability |
| Flexible operation and storage | Can reduce peaks and coordinate large loads with grid conditions | Reliability, storage duration, tariffs, curtailment terms, workload flexibility and upgrade costs |
| Heat reuse and renewable co-location | May connect computing output or energy supply to nearby users | Heat customer, temperature and timing match, network cost, water and renewable deliverability |
Across every row, compare land and habitat disturbance, firm power and transmission, water and cooling, cost and schedule, cleanup liability, reliability and transparent local benefits. USGS cautions that power proximity is only one part of a more complex siting choice.
A practical screening process for developers and communities
- Define the workload. Record peak and average megawatts, growth phases, latency requirements, uptime target, rack density, cooling technology and which jobs can move or pause.
- Create a constrained-site map. Screen previously developed parcels, former energy sites and existing buildings while excluding protected habitat, flood-risk areas and locations with incompatible land-use conditions.
- Verify grid deliverability. Obtain written utility data on available capacity, interconnection queue position, required upgrades, voltage, reliability and energization dates. Treat a map of nearby lines as an initial clue only.
- Assess water and cooling. Quantify annual and peak withdrawals, consumptive use, discharge temperature, drought restrictions and competing ecological, municipal, industrial and agricultural demands.
- Perform environmental and geotechnical due diligence. Investigate contamination, vapor, groundwater, structural conditions, flood exposure, seismic risk, noise and air emissions. For Superfund or controlled sites, coordinate with the remedy authority.
- Model alternatives together. Compare one large campus, several edge sites, a converted building and a retired-plant location using the same assumptions for power, water, backup generation, storage, land, schedule and operating cost.
- Engage affected people before commitments harden. Publish expected noise, water use, traffic, generator testing, jobs, taxes, emergency plans and mitigation. Include residents, tribal governments where relevant, utilities, water authorities and environmental groups.
- Build a staged approval plan. Tie land acquisition, interconnection, cleanup milestones, permits, financing and construction phases together. Do not announce a delivery date based only on a preliminary site screen.
Policy context and limits of current mapping
USGS’s 2026 analysis of data centers and energy infrastructure on or near Bureau of Land Management lands in 11 western states and Alaska is useful for understanding spatial relationships. The report does not provide detailed environmental or regulatory analyses and does not recommend specific future development sites. Its warning about water competition is especially important in arid regions.
In Europe, the European Commission page accessed on 13 October 2026 said a common data-center rating scheme had been proposed on 21 September 2026, minimum performance standards were under preparation and a legislative proposal was planned for the second quarter of 2027. Those were policy-development milestones at that date, not enacted standards.
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Planning rules, utility tariffs, cleanup programs and environmental requirements differ by country, state and municipality. A screening map or policy target cannot replace a site-specific permit record, engineering design and public process.
How to choose among options
A defensible choice starts by weighting the constraints that cannot be traded away. For a latency-sensitive service, network distance may outrank land cost. For a water-stressed basin, cooling demand may eliminate an otherwise powered site. For a contaminated property, remedy compatibility and long-term controls may dominate the schedule.
- Reject first: sites without a credible path to firm power, safe water and cooling, legal access, or required environmental controls.
- Then rank: remaining sites by energization date, cleanup certainty, retrofit or construction cost, reliability, carbon and water performance, and community impact.
- Stress-test: drought, heat waves, transmission delays, equipment failure, workload growth, stricter emissions rules and loss of a heat customer.
- Publish assumptions: distinguish measured capacity from planned capacity, one-time estimates from recurring costs, and forecasts from adopted requirements.
The strongest portfolio may combine several approaches: a carefully remediated industrial site for centralized workloads, smaller edge facilities where latency requires them, storage and demand response to reduce peaks, and heat or renewable projects only where local infrastructure and users make them practical. That combination reduces pressure on sensitive undeveloped land without pretending that impacts disappear.
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