Texas is in the middle of the largest grid expansion in its history. Billions are already committed to new 765-kV transmission corridors that will reshape how electricity moves across the state. It was a bold and necessary move, but as we expand the grid’s size, demand is accelerating faster than anyone expected.
In February, CenterPoint’s CEO said peak demand in its Houston service territory is now expected to jump 50% by 2029 — two full years sooner than originally forecasted. That isn’t normal load growth. That’s acceleration, and acceleration changes the equation.
The problem isn’t simply more demand. It’s demand that behaves differently from anything this grid was engineered to handle. If we respond by building more of what we already have, the grid will keep behaving the way it does today, just bigger and under more stress.
Texas is becoming one of the country’s largest data center hubs, and these facilities don’t pull power the way traditional loads do. What used to be steady, predictable traffic has turned into stop-and-go congestion — quick surges, abrupt slowdowns and unpredictable flows that ripple through the entire system. Sometimes, the moment swings happen at the local level, ERCOT feels them statewide.
Bigger transmission lines will help move power, but they won’t calm it down or make volatility at the edge any easier to handle. They won’t prevent small disturbances from becoming much larger ones. Stability at the source requires something the grid hasn’t historically included: storage. Transmission moves electricity, but it doesn’t condition it.
But here’s the real distinction. Texas has plenty of tools that handle momentary disturbances, including filters, power electronics and short-term UPS systems. They’re useful, but they’re not built for what’s happening now. The volatility coming from today’s large loads isn’t a millisecond blip. It’s multi-megawatt swings that last minutes, repeat constantly and land right at the substations. Managing that behavior requires something that can absorb and release real power for real durations without wearing itself out or putting the surrounding community at risk.
That’s where the choice of storage actually matters.
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By Amanda Simonian
Amanda Simonian is Chief Marketing Officer of TerraFlow Energy, a developer of long-duration energy storage systems for grid and infrastructure applications.
