Denver’s data center buildout: power, prices, and risk
Data centers are arriving in several sizes and places around Denver. The useful question is not whether they are inherently good or bad. It is how each project connects to the electric system, which costs it creates, who carries the risks, and what the community receives in return.
“A Denver data center” can mean very different things
A data center is a building-sized computer system: servers do the work; electrical equipment converts and distributes power; cooling removes heat; batteries and generators bridge outages; networks connect the facility to users and other facilities.
The Denver-area projects below are not a complete inventory. They are enough to show why category-level claims fail: scale, utility, cooling design, construction stage, and neighborhood context differ.
| Example | Published scale | Utility/context | Why it matters |
|---|---|---|---|
| Parker | 22.5 MW critical IT; 249,000 sq. ft.; 17 acres; PUE 1.3 | CORE Electric Cooperative; Town says adjacent existing substation and no equipment-cooling water | A midsize regional facility whose public debate centers on electricity and cost allocation. |
| North Denver DE3 | About 18 MW; 170,000 sq. ft. | Expansion of an established interconnected urban campus; operations scheduled for June 2026 | Shows that not every expansion is a hyperscale campus. |
| Aurora QTS | Planned 160+ MW critical campus capacity; 65 acres | Xcel territory; phased hyperscale development | Large enough to affect utility resource planning; backup-generation permits create a separate local air and noise question. |
Four concepts prevent most bad analysis
How much at one moment?
A 22.5 MW IT rating describes designed computing capacity, not annual energy and not necessarily the utility meter peak.How much over time?
Annual energy depends on actual load through every hour. Capacity multiplied by 8,760 hours is a full-load scenario.What runs beyond servers?
PUE divides total facility power by IT power. At PUE 1.3, every 1 MW of IT load implies 0.3 MW for cooling and electrical overhead at the stated condition.How steady is demand?
A steady customer can use infrastructure efficiently; a rapidly changing or uncertain forecast can force expensive capacity to sit underused.For Parker, one transparent scenario is:
29.25 MW × 8,760 hours = 256.23 GWh/year at continuous full load
This is useful for scale, but it is not a forecast. Public information does not show Parker’s eventual hourly utilization, ramp schedule, or meter data.
A data center does not simply plug into the grid
The important distinction is between energy cost and system cost. The monthly electricity consumed is only one layer. A large connection can require generation capacity, transmission, a substation, distribution equipment, reserves, and reliability investments. Some assets serve only that customer; others strengthen a shared system.
A large load is not automatically a subsidy or a bargain
More revenue, better utilization
A stable, high-load-factor customer can spread shared fixed costs across more sales. A residential-heavy cooperative may value a commercial customer that pays reliably and uses assets outside household peaks.Incremental cost is ring-fenced
Project-specific charges, long commitments, minimum bills, and exit protection can make the customer fund what it requires.Forecast or allocation fails
Existing customers can be exposed if infrastructure enters the shared rate base, demand arrives late, a customer leaves, or system-wide generation is built on an overoptimistic forecast.These outcomes depend on contract design and regulation, not on the word “data center.” CORE is a member-owned cooperative; Xcel is an investor-owned utility regulated by the Colorado Public Utilities Commission. Their governance, rate processes, resource portfolios, and disclosure obligations differ.
The Town of Parker says CORE represented that Parker’s project will pay for its own infrastructure and energy and will not increase rates for other members. That is relevant evidence. It is not the same as independently reviewing the service agreement or cost-of-service analysis.
Xcel’s 2026 proposed large-load tariff illustrates the protective tools available: project-specific generation, transmission, substation, and interconnection costs; minimum monthly payments; long-term commitments; financial security; and early-exit charges. It does not govern Parker, but it makes the mechanics visible.
What reasonable participants are optimizing
Electricity dominates—but design and location still matter
Carbon: MW alone does not reveal emissions. The answer depends on the marginal resources serving the load, construction timing, transmission constraints, storage, and whether clean-energy claims match hourly consumption or only annual purchases.
Water: Cooling designs differ. The Town says Parker will not consume water for equipment cooling and will use closed-loop systems; ordinary building water and upstream water used in electricity production remain. Other facilities may choose evaporative systems that exchange water use for energy efficiency.
Backup generation: Diesel generators generally operate infrequently, but their local impact is concentrated during testing or outages. Aurora’s QTS campus has sought permits for a large generator fleet, making equipment controls, test schedules, cumulative emissions, and noise legitimate project-specific questions.
Land and public value: A facility can generate substantial taxable value with limited demand for schools and services, but it also creates fewer permanent jobs than many similarly sized industrial developments. Neither fact alone decides whether the land use is good.
SMRs are one branch of a much larger decision tree
A large-load plan can combine existing capacity, new transmission, wind and solar, batteries, gas generation, geothermal, nuclear, demand flexibility, or delayed interconnection. The mix must be compared on cost, firmness, emissions, water, land, construction time, and who bears failure risk.
Douglas County’s exploration of small modular reactors and microreactors concerns broader resilience and economic-development questions. Parker’s 22.5 MW rating does not establish the need for an SMR. Equally, uncertainty about first projects does not make nuclear irrelevant to long-term firm clean-power planning.
Ask for the evidence that changes the answer
- What exactly is being measured? IT capacity, facility demand, contracted utility capacity, projected peak, or actual annual energy?
- What is the ramp? When does each block of demand become firm, and what happens if it is delayed?
- What must be built? Identify generation, transmission, substations, feeders, and backup systems separately.
- Who pays each layer? Distinguish direct connection assets from shared network improvements.
- Who carries forecast risk? Look for minimum bills, long terms, collateral, and termination charges.
- What serves the marginal MWh? Annual renewable certificates do not answer the hourly grid question.
- Can the load flex? Curtailment or staged computing may reduce peak capacity needs—but only if contractually real.
- What is local? Cooling water, generator exhaust, noise, traffic, and setbacks must be evaluated facility by facility.
- What does the community receive? Use net tax revenue after incentives, durable employment, and infrastructure value—not announcement totals.
- What alternative was displaced? Compare the project with realistic alternative land uses and power investments, not an imaginary zero-impact baseline.
Where the numbers and frameworks come from
FacilityFlexential Parker specifications; Town of Parker FAQ; CoreSite DE3 construction page; QTS Aurora-Denver campus.
UtilityXcel’s description of its proposed large-load tariff; Colorado PUC newsletter. Xcel’s proposal is context, not Parker’s governing tariff.
Local reportingColorado Public Radio on QTS backup generators; Colorado Sun on Aurora’s utility scale and local economic case.
MethodDavid MacKay, Sustainable Energy—without the hot air, for quantitative balance sheets; Andy Masley, “What a data center is”, and “Data centers & electricity—part 1”, for counterfactual and denominator questions. Their framing informs questions here; it does not substitute for Colorado evidence.