Legacy telecom data centers may look like liabilities, but in the right hands – and with the right strategic approach – they’re a hidden asset class waiting to be unlocked.
While colocation and hyperscale providers often see a clear business case for retrofitting legacy assets, telecom operators face a more nuanced challenge: how to optimize an extensive and aging portfolio of data center-like facilities that were never intended for modern compute in the first place.
Across North America, the largest telcos collectively operate tens of thousands of network facilities, including central offices, hub sites, and edge data centers. Many of these buildings date back to the 1970s-1990s.
A 2023 audit from a Tier 1 US carrier revealed that less than 40 percent of its real estate footprint was being utilized above 30 percent capacity, yet all of it was still drawing power, requiring cooling, and undergoing maintenance.
These assets are often fragmented, imperfectly mapped, and misaligned with modern network and compute demands. Yet, paradoxically, they hold massive potential. AI is driving explosive growth in bandwidth, particularly at the metro edge where latency matters most.
Core networks are evolving into distributed mesh topologies. Meanwhile, hyperscalers and cloud-native AI companies are aggressively seeking regional footprints to support inference workloads. Telecom infrastructure could be the answer – if repurposed correctly.
The barrier? Complexity. Telecom assets are owned, managed, and operated by multiple departments, often including network operations, real estate, finance, IT, and regulatory compliance. Decisions require long planning cycles and cross-functional buy-in.
Additionally, many telecom sites are governed by rate-base rules, long-term lease obligations, or public service mandates that inhibit quick divestment or redevelopment.
Still, there’s a clear opportunity to adopt a structured approach to upgrade these sites. Enabled Energy harnesses nearly two decades of retrofit experience to offer NextField – a strategic and customized roadmap to ensure legacy data centers achieve their highest and best use.
A NextField roadmap can help telecom operators rationalize their portfolios and unlock stranded capacity. It begins with a network-wide inventory to discover:
- Which sites have redundant functionality?
- Which facilities sit on high-capacity fiber routes or have latent utility connections?
- Where is there co-location potential for internal IT workloads, edge cloud providers, or CDNs?
From there, the roadmap identifies flagship candidates that can be transformed into revenue-generating Edge nodes. These facilities can anchor regional consolidation efforts, enabling smaller sites to be decommissioned or repurposed.
Phased execution is critical. Enabled Energy’s experience indicates that the first phase best includes reclaiming whitespace through decommissioning of legacy equipment: mainframes, copper termination gear, or backup tape storage.
The second phase moves to modernize mechanical-electrical systems to support multi-tenant colocation or private cloud environments. Our experience in targeted retrofits and reuse of infrastructure is particularly relevant in this step.
The final phase moves to evaluate and then market and repurpose surplus real estate for resale or adaptive reuse, transforming stranded assets into cash flow.
Financially, the ROI can be significant. Reallocating or monetizing underutilized space can generate savings in the millions annually. A recent consolidation project by a European carrier yielded over €50M in recurring OPEX reductions and created 12 new revenue-generating sites.
In dense urban areas, site consolidation can also unlock prime real estate, allowing telcos to divest or lease buildings for mixed-use redevelopment.
Just as importantly, strategic modernization aligns with broader resiliency goals. Older telecom sites are often some of the least efficient in a given portfolio, delivering PUEs of 2.0 or higher. Upgrading just 10 percent of a telco’s portfolio can reduce its total carbon footprint by 15-20 percent, according to estimates from the GSMA.
The transformation will not unfold on its own, even if the ingredients (power, footprint, cooling infrastructure, and metro proximity) are already there. What’s needed is a catalyst – a NextField roadmap to provide a strategic lens.
With the right stakeholder alignment and phased approach, telecom operators can turn aging liabilities into future-ready infrastructure. The clock is ticking. AI, 5G, and Edge applications aren’t slowing down. If telcos make the right strategic infrastructure investments in the next 18 months, the market looks poised to reward their efforts for years to come.
Learn more about how Enabled Energy can turn brownfield facilities into a thriving NextField fleet.
This article was originally published on DataCenterDynamics on August 12, 2025.
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