Spillover and Arbitrage: Indiana and Ohio's Second Tier

When the primary markets strain, demand does not evaporate; it migrates. The emerging tier is where it lands, and the practitioner's job is to tell the difference between a genuine emerging market and a hopeful field with a press release. An emerging market is not simply a cheap or remote place. It is a place that has one or two of the inputs from the earlier checklist convincingly, usually a power story, and is racing to prove the rest, latency, liquidity, labor, and social license, before the demand wave moves on. Some make the leap. Many do not. This lesson walks the eastern and central candidates; the next covers the power-first plays of the West and Gulf.

Start next door to two primary markets, because proximity to a strained hub is the most common launch pad. Indiana, and specifically the ring around Indianapolis and the counties reaching toward it, became a serious destination almost overnight. The state offered a durable sales-tax exemption on data center equipment, a central location with reasonable fiber, cheap land, and, decisively, a utility and grid situation that could still quote credible power while neighbors filled up. Multiple hyperscalers and large developers committed enormous campuses across the state. Indiana's appeal is essentially arbitrage: it offers most of what the Midwest primary markets offer, at lower cost and, for now, with more available power, close enough to major population centers to serve real workloads. Whether it graduates depends on whether that power availability holds as the announced projects actually energize and on whether the local politics, which have already produced county-level pushback and at least one rejected project, stay net welcoming.

Then there is the second tier of Ohio itself, the counties beyond the Columbus core. This is the natural spillover of a market that got hot too fast. As central Ohio's headroom filled and the tariff fights began, developers started looking at adjacent regions of the state that share the same utility framework and the same welcoming state posture but have not yet drawn a crowd. This second-tier Ohio story is a useful case because it shows how an emerging market can be, in effect, the exhaust of a primary one: the same power system, the same incentives, one county over, discovered precisely because the obvious location ran short. These spillover markets live or die on transmission. If the wires can reach them, they inherit the parent market's momentum. If not, they remain fields with good intentions.

The common thread across these eastern and central candidates is that none of them is trying to out-Ashburn Ashburn. They are not competing on liquidity or network density, which they cannot match. They are competing on the one axis where the primary markets are weakest right now, available power on a workable timeline, plus cost. That is the entire emerging-market thesis in miniature. A second-tier location wins deals precisely and only when it can offer entitled, powered land that the first-tier location cannot deliver fast enough, at a price that compensates the customer for the thinner ecosystem around it. The customer accepts less liquidity, longer latency to some destinations, and a shallower labor pool in exchange for the one thing that has become non-negotiable: megawatts on a date.

That trade explains why the emerging tier is so volatile. The moment a second-tier market's power advantage closes, because its own queue fills, its transmission clogs, or a primary neighbor adds capacity, its reason to exist weakens, and demand jumps again to the next place with headroom. Emerging markets are, in a sense, temporary arbitrages on the location of spare power. Some of them convert that temporary advantage into permanent liquidity and graduate, as Columbus and Atlanta recently did. Most simply absorb a wave of projects and then plateau, useful but never primary. The practitioner's edge is in guessing which is which early, and the tell is almost always the same: does this place have a credible, durable path to more power, or just a one-time slug of headroom that will be gone once the announced campuses switch on? Keep that question in front of you as we turn to the more extreme power-first markets of the West and the Gulf, where the arbitrage is starkest and the ecosystems thinnest.