Two operators quote you the same headline rate per MW. One proposal is 30% more expensive over the contract term. Reading data center capacity proposals is a discipline and most procurement teams learn it the hard way.
The headline rate is rarely the real rate
When you receive a proposal, the per-kW or per-MW monthly figure is only the starting line. Three categories of cost determine the actual total cost of ownership:
- Recurring power charges: the line everyone compares. Usually quoted in EUR/kW/month.
- Pass-through costs: energy at-cost, with or without hedging, plus regulatory levies.
- Capex contributions: fit-out, custom power distribution, redundancy upgrades.
The trap is that operators structure these three buckets differently. Operator A may bundle pass-through into the headline rate. Operator B keeps it separate to look cheaper at first glance. Comparing buckets in isolation is meaningless.
Three traps we see repeatedly
Trap 1: PUE assumptions
A proposal quoting energy at “PUE 1.2 effective” is not the same as one quoting “PUE 1.2 contractual.” The first is a target; the second is a commitment. Across a 10-year contract on 10 MW of IT load, that distinction is worth seven figures.
Trap 2: Escalation clauses
Look for the indexation formula. Some proposals tie escalation to a single national CPI. Others use a basket including energy prices, labor indices and currency adjustments. The basket version can drift 3-4% per year above CPI in inflationary periods.
Trap 3: Termination economics
Early termination clauses are where buyer-friendly proposals diverge from operator-friendly ones. The question is not whether you can terminate it is whether the residual liability is calculated on remaining capex, remaining revenue, or some hybrid. The hybrid is almost always the most expensive.
A simple normalization framework
Before comparing proposals, normalize them on five dimensions:
| Dimension | What to extract |
|---|---|
| Total monthly recurring | Power + cooling + connectivity + space |
| Pass-through floor | Minimum energy cost per kWh, all-in |
| Term length | Years, with break clauses noted |
| Escalation formula | Index, cap, floor |
| Capex contribution | Operator’s, yours, payback mechanism |
Once every proposal is on the same grid, the real comparison emerges. Often the cheapest headline rate is not the cheapest contract.
The proposals that look identical on page one rarely are by page twelve. The discipline is to read every page.
The questions that matter
For every proposal we help buyers evaluate, three questions surface the most value:
- What is the all-in cost per IT-MW per year over the term? Forces normalization.
- What changes if our load shape changes by ±15%? Tests flexibility.
- What does year-eight look like at indexation cap? Tests downside.
Operators who can answer these crisply are usually the ones whose proposals hold up under scrutiny.
In summary
Headline rates are marketing. Total cost of ownership is procurement. The gap between the two is where the real negotiation happens and where the largest savings, or the largest surprises, are hidden.