Local opinion: Data centers' power draw should concern Tucsonans

Tucson Electric Power wants us to believe our power bills are no bigger than a cup of coffee, about $4 a day for reliable service. But when you look at Project Blue, that tidy analogy collapses. If Tucson families are sipping one cup, Project Blue is building a Starbucks roastery.

In its own public materials, TEP acknowledges: “Our agreement would provide up to 286 megawatts of energy to this project, making it TEP’s largest customer.” That’s not just a latte here and there. At 286 MW, the data center would use the same power as 220,000 Tucson homes or about 7,000 Starbucks stores.

That’s just the start. Project Blue’s own FAQ estimates 250–350 MW initially and up to 700 MW at full build. That’s the power of half a million homes, so the ‘cup of coffee’ story doesn’t hold up.

Here’s the kicker: Tucson households pay full retail for every sip, while Project Blue would pay something closer to wholesale under TEP’s high-voltage tariff. That may not sound dramatic on paper, but at 286 megawatts, even a modest discount scales into millions of dollars. The question isn’t just what’s fair, but who carries the economic and public-health risks of a city-sized power demand.

TEP reassures us that this kind of steady load benefits everyone by helping to spread fixed costs. But their 2026 rate proposal tells a different story: “In late 2026, we will need to start recovering $1.7 billion of recent investments in our local energy grid…” If mega-users really lowered costs, families wouldn’t be facing double-digit bill hikes to cover the upgrades built to serve them.

In an Arizona Technology Council report, TEP’s Director of Resource Planning, Lee Alter, admitted: “The market is really tightening up… We are keeping close tabs on the market and [power plant] closures and the ability to retain that reserve margin in the future.” Even with a 16% reserve margin, utilities may struggle to maintain reliability as extreme heat and demand grow. Separately, TEP’s wildfire plan authorizes proactive shutoffs for about 1,300 customers, instructing families to prepare with days of food, water, medicine, cash, and backup power — guidance that looks more like disaster planning than a minor inconvenience. Taken together, these admissions show outages are not hypothetical. Rolling blackouts are already on the table, and when a half-gigawatt data center is layered onto a tightening grid, the risks extend beyond economics into public health.

It is entirely reasonable for the public to question this project when no clear data demonstrate its safety, feasibility, or resource capacity. When numbers are withheld, two impressions naturally arise: either the company does not know with certainty, or the truth would appear disadvantageous if revealed. In both cases, the lack of transparency undermines trust and makes scrutiny justified and necessary.

Arizona families don’t get to buy “projections.” We pay real bills, we live with real outages, and in our desert climate, blackouts mean real health risks. Generators and backup batteries are expensive, and when hospitals or households rely on them in 100-plus-degree heat, the costs are counted not just in dollars but in lives. A true community partner would put the health and safety of Southern Arizonans ahead of corporate expansion.