If you got a renewal quote this year that looked nothing like last year’s, you’re not imagining it. Colocation pricing has moved more in the last eighteen months than in the previous five years combined, and almost none of it is about the reasons buyers usually assume — construction costs, land prices, or provider greed. It’s about one number: how many megawatts a provider can actually get delivered to your rack, and how fast.
The number that explains everything else
Vacancy across primary North American data center markets hit a record low of 1.4% in H1 2026, down from 1.6% a year earlier. Northern Virginia — still the largest colo market in the world — is sitting at 0.2% vacancy. Globally, occupancy is pushing 97%.
Those aren’t “tight market” numbers. Those are “there is functionally nothing left to lease” numbers, and pricing behaves accordingly. When a handful of providers control the only available capacity in a metro, they stop pricing off their costs and start pricing off scarcity.
It’s not space anymore. It’s power.
For most of the last decade, the buyer’s opening question to a colo provider was “do you have space?” That question is now close to irrelevant. Floor space is not the constraint — grid power is.
Average grid-interconnection wait times in primary markets now exceed four years. Northern Virginia, which used to be the default answer for enterprise colocation, is running into substation queues so severe that developers are actively steering new builds toward secondary markets — Texas, Louisiana, Ohio, Nebraska, Iowa — specifically because the power is easier to get, not because the real estate is cheaper.
This is why 92% of colocation capacity currently under construction was precommitted before a single cabinet went in. Providers aren’t building speculatively and hoping to fill it later — they’re building against contracts that were signed 18 to 24 months before the space will even be ready. If you’re shopping for capacity the way you would have in 2021 — touring a few facilities, comparing list prices, deciding in a few weeks — you’re already behind the buyers who locked in power two years ago.
What this actually costs, by the numbers
Rate increases in H1 2026 weren’t uniform — they tracked deal size in a specific and useful way:
| Requirement size | Rate increase, H1 2026 |
|---|---|
| 250–500 kW | 4.3% |
| 500 kW–3 MW | 7.9% |
| 3–10 MW | 8.3% |
| 10+ MW | 6.7% |
The mid-range tier (3–10 MW) saw the steepest climb — roughly twice the rate of movement in the smaller 250–500 kW band. That’s the segment where hyperscalers and large AI occupiers are competing directly with mid-market enterprise buyers for the same contiguous power blocks, and the enterprise buyer usually loses that negotiation on price.
Regionally, the spread is wide. In the 10+ MW tier, New York Tri-State rents were up 19% year-over-year, Atlanta climbed 14.5%, and Chicago rose 9.7%. Meanwhile Silicon Valley and Hillsboro were essentially flat — not because demand is soft there, but because those markets were already priced at the ceiling and there’s no incremental capacity left to reprice.
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📞 Book a Discovery CallOn a straight per-kW basis, national average asking rent for a 250–500 kW requirement is now $196.25/kW-month, up 6.6% year-over-year. Chicago is running $200–$230/kW-month, up nearly 15%. Northern Virginia sits at $190–$235/kW-month. If you build instead of lease, the spread is even more dramatic: a standard build averages $11.3M per megawatt globally, but an AI-optimized, liquid-cooled build runs $15M–$20M+/MW — and a stabilized leased asset in Northern Virginia now trades at roughly $27.1M/MW.
Renewals are where this hits existing tenants hardest. Digital Realty disclosed a 25.4% cash-basis rent increase on renewals in a single quarter this year. If your current colocation contract is coming up for renewal in the next twelve months, that’s the number to budget against — not last year’s rate plus a modest inflation bump.
The AI density problem nobody priced in three years ago
The other force behind these numbers is physical, not just financial. AI training clusters now run 30–100 kW per rack, sometimes higher. That’s five to ten times the density of a typical enterprise rack from five years ago. Inference workloads are lighter — 10–20 kW per cabinet — but still well above legacy norms.
At those densities, air cooling simply doesn’t work. Liquid cooling has gone from a premium option you paid extra for to a baseline infrastructure requirement for any facility trying to attract AI tenancy — which means providers are retrofitting existing floors or building new ones around it, and passing that capital cost straight into the rate card. A “100-kW GPU server can only be cooled by a closed-loop liquid-cooling system” is now a flat design constraint, not a preference, and it’s reshaping what a “standard” data center even looks like.
If your own workload isn’t AI-driven, this still affects you: you’re competing for the same power-constrained sites as the operators who need liquid cooling, and providers are increasingly optimizing their limited capacity toward the tenants who’ll pay AI-tier rates for it.
What to actually do with this
None of this means colocation stopped making sense — it means the negotiation has changed shape, and buyers who show up with 2021-era assumptions are the ones who overpay.
Three things matter more than they used to. First, ask about power delivery timeline and committed dates before you ask about price — a cheaper quote with a vague power delivery date is worth less than a firm quote with a guaranteed one. Second, if you have any flexibility on location, price out secondary markets seriously; the interconnect queue difference between Northern Virginia (4+ years) and a market like Phoenix (8–14 months) can be worth more than a modest rate discount. Third, if your renewal is coming up, start that conversation now rather than 60 days out — with 92% of new capacity already spoken for, you have far less leverage to walk away than you did two renewal cycles ago.
This is exactly the kind of thing that’s easy to underestimate from a single vendor quote and much clearer once you can put your specific rack count, density, and market against real benchmark numbers. That’s the gap the Data Center Buyer’s Toolkit is built to close — the TCO calculator in it takes your actual numbers and returns an all-in monthly cost and vendor comparison, rather than leaving you to eyeball whether $196/kW-month is a fair quote or a markup.
If you’re not ready to go that deep yet, the free Data Center Buyer’s Quick-Start Checklist covers the shortlist and vendor-question basics in four pages, no email-gate tricks.
Written from 15+ years running data center design, operations, and project management.
Sources
- CBRE — North America Data Center Trends H1 2026
- Inflect — Data Center Colocation Trends 2026: Power, AI Density, and the New Rules of Colocation
- ColocationScout — 2026 Colocation Pricing Benchmarks
Written by
Raajeev Ratra
Data Center Infrastructure Expert | 15+ Years in DC Design, Operations & Project Management
Raajeev is a seasoned data center professional with hands-on experience in hyperscale facilities, colocation design, power & cooling infrastructure, and global DC operations. He shares practical insights to help engineers and IT leaders build better infrastructure.