Engineers Transform Transformers to Save the Power Grid: A Global Shortage of This Essential Grid Tech Bottlenecks Energy Projects

To Nick de Vries, chief technology officer at the solar-energy developer Silicon Ranch, a transformer is like an interstate on-ramp: It boosts the voltage of the electricity that his solar plants generate to match the voltage of grid transmission lines. “They're your ticket to ride,” says de Vries. “If you don't have your high-voltage transformer, you don't have a project.” Recently, this ticket has grown much harder to come by. The demand for transformers has spiked worldwide, and so the wait time to get a new transformer has doubled from 50 weeks in 2021 to nearly two years now, according to a report from Wood MacKenzie, an energy-analytics firm. The wait for the more specialized large power transformers (LPTs), which step up voltage from power stations to transmission lines, is up to four years. Costs have also climbed by 60 to 80 percent since 2020.