Long-Lived & Infrastructure Assets

How to Underwrite Data Center Infrastructure

Underwrite a data center on contracted critical IT capacity: leased megawatts, tenant credit and remaining lease term, backed by secured utility power. The metrics that matter most are leased versus available MW, weighted average lease term and tenant credit, build cost per MW against rent per kW, and power availability and cost at the site.

What makes data center infrastructure underwriting different

A data center is priced and leased by power, not square footage. Value comes from delivering reliable critical IT load in kilowatts or megawatts, with redundant electrical and cooling systems, at a site with secured utility power and fiber connectivity. Hyperscale facilities are often leased to a single cloud or AI tenant on long terms, while retail colocation sells smaller deployments to many customers on shorter contracts with interconnection revenue. The main risks are power supply constraints, construction delay and cost overruns, tenant concentration, technological shifts in rack density and cooling, and the need to refresh mechanical and electrical equipment well before the building shell wears out.

Lenders underwrite contracted cash flow and the creditworthiness of the tenant, so a signed lease with an investment grade hyperscaler can support high leverage on a facility that is not yet built, provided construction risk is controlled. They size to lease cash flow and look closely at termination rights and delivery deadlines. Equity investors underwrite development yield on cost, expansion phases on the campus, renewal probability and terminal value. Equity takes speculative capacity and power procurement risk; lenders usually exclude unleased capacity from sizing or advance against it only at low rates.

Key metrics

Leased MW vs commissioned MW

Critical IT load under contract is the revenue base; unleased capacity is optionality with carrying cost.

Weighted average lease term

Long hyperscale leases support project finance style debt; short colocation contracts behave more like operating business revenue.

Tenant credit and concentration

Single-tenant hyperscale facilities are effectively a credit bet on that tenant.

Lenders commonly give the most leverage to facilities leased to investment grade tenants on long terms.

Development yield on cost

Stabilized NOI divided by total build cost shows whether the development creates value over a stabilized cap rate.

Power availability and cost

Utility capacity, interconnection timelines and energy price drive both deliverability and tenant demand.

PUE (power usage effectiveness)

Total facility power divided by IT power indicates cooling efficiency and affects operating margin when power is passed through or bundled.

How to underwrite it, step by step

Confirm utility power commitments, substation timing and interconnection agreements for each phase.
Review leases for rent per kW, escalators, delivery dates, termination rights, credits and pass-through of power costs.
Underwrite tenant credit and concentration, including any parent guarantees.
Engage an independent engineer to review design redundancy, cooling approach and suitability for target rack density.
Assess construction budget, contractor, long-lead equipment procurement and schedule contingency.
Model stabilized NOI by phase and stress for delivery delay, lease-up of speculative capacity and equipment refresh.
Size construction and term debt to contracted cash flow with completion guarantees or cost overrun support.

Due diligence checklist

Tenant leases or master service agreements
Utility power agreements and interconnection studies
Independent engineer design and construction review
Construction contracts and budget with contingency
Long-lead equipment purchase orders (transformers, generators, switchgear)
Fiber connectivity and carrier agreements
Zoning, permits and environmental approvals
Tenant financial statements and guarantees
Operating history: uptime, SLA credits and power usage
Property tax abatement or incentive agreements
Title, survey and land documents

Key risks and mitigants

Utility power delay or shortfall

Require executed utility agreements and tie loan draws to confirmed power delivery milestones.

Construction delay breaching lease delivery dates

Review liquidated damages and termination rights and require completion guarantees and schedule float.

Single-tenant concentration

Underwrite the tenant as the primary credit and size debt so the facility can be re-leased if the tenant leaves at expiry.

Technological obsolescence from higher rack densities

Assess the design's ability to support liquid cooling and higher densities and fund a capex reserve for mechanical and electrical refresh.

Power price volatility in non pass-through contracts

Prefer leases with power cost pass-through or hedge energy exposure.

Typical financing and deal structure

Data centers are financed with construction loans that convert to term debt or are refinanced into securitizations or CMBS once stabilized. Hyperscale developments with signed leases often use project finance style construction facilities sized to contracted rent, sometimes with delayed draw tranches for later phases. Stabilized colocation portfolios are financed with ABS backed by customer contracts or with corporate term loans based on EBITDA. Covenants include debt service coverage and leverage tests, completion and cost overrun guarantees from the sponsor, cash sweeps if leases are not signed by a deadline, and restrictions on tenant lease amendments. Equity typically comes from infrastructure funds, REITs and joint ventures between developers and institutional capital.

Red flags

No executed utility power agreement or power delivery dated after lease delivery deadlines.
Lease allows tenant termination for delay with no cure period or cap on damages.
Speculative capacity included in debt sizing at full rent.
Design cannot support the rack densities current tenants are demanding.
Long-lead electrical equipment not yet ordered for a near-term delivery.

Frequently asked questions

How are data centers valued?

Data centers are usually valued on stabilized NOI using cap rates, with heavy weight on tenant credit, lease term and power availability. Development projects are judged on yield on cost versus the cap rate at stabilization. Colocation operators with many customers and interconnection revenue are often valued on EBITDA multiples because they behave more like operating businesses.

Why is power the main constraint for data center underwriting?

A data center can only lease capacity it can energize. If utility power, substations or transmission upgrades are delayed, the facility cannot deliver to tenants on time, which can trigger lease penalties or terminations. Lenders therefore diligence executed utility agreements and interconnection timelines as closely as they review leases themselves.

What is the difference between hyperscale and colocation data centers?

Hyperscale facilities are typically leased in large blocks to a single cloud or AI company on long terms, so underwriting focuses on that tenant's credit. Colocation facilities serve many customers with smaller deployments on shorter contracts and earn interconnection fees. Colocation has more diversification but more churn and sales execution risk.

What does PUE mean for a lender?

PUE measures total facility power divided by power delivered to IT equipment, so a lower number means less energy spent on cooling and losses. For lenders it signals operating efficiency and competitiveness, and it matters most when the operator bears power costs rather than passing them through to tenants under the lease.

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Educational content, not investment, credit, legal or tax advice. Benchmarks are common practitioner rules of thumb and vary by lender, market and cycle.