Startup Bets Century-Old Iron-Core Transformer Technology Can Meet the AI-Fueled Demand Surge
Soaring demand for electrical transformers, driven in large part by the rapid growth of AI data centers, has reached such unprecedented levels that a leading industry investor is backing a new startup built around 100-year-old core technology.
Ayr Energy produces iron-core transformers, the same foundational design that has powered global electrical grids for more than a century. While dozens of other new startups have launched in recent years to displace traditional iron-core transformers with newer alternatives, Ayr and its backers are convinced the decades-old technology still has plenty of untapped potential. And judging by the firm’s order book, which now tops $500 million, that bet may well pay off.
“We were evaluating multiple forms of capital when we were getting started,” Anirudh Reddy, co-founder and CEO of Ayr, told TechCrunch in an exclusive interview. “It quickly became clear that the opportunity here is so massive that venture capital gives us the flexibility to take those necessary risks upfront, and the potential to generate outsized returns down the line.”
This huge market opportunity has already attracted prominent backers including Energy Impact Partners. To date, the startup has raised $25 million across two funding rounds.
This level of investor excitement is rare for a mature, largely commoditized business like transformer manufacturing. Ayr competes directly with industry giants including GE, Siemens, and Mitsubishi, companies that have mass-produced transformers for decades.
For most of modern history, transformer demand was relatively steady and predictable. Electricity demand in developed economies stayed stable, making production planning simple for suppliers. That all changed when the global electrification wave overlapped with the AI boom, sending demand skyrocketing. According to Global Market Insights, global transformer demand is projected to double by the middle of the 2030s.
Existing legacy suppliers, which have lived through multiple past economic booms and busts, have been hesitant to invest heavily in new manufacturing capacity to meet the surge.
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Reddy and his co-founders saw a uniquely sustained shift unfolding in the market, however. “When we dug deeper, we realized this demand growth is being driven by many different factors, not just one,” he said. “This could be a prolonged super cycle, rather than the short-term demand spikes the industry has seen in the past.”
Ayr partners with existing transformer manufacturing facilities in India, which build units to the startup’s custom specifications. Its designs are far more modular than traditional transformers, Reddy explained, allowing customers to adjust their orders even late in the production process.
This flexibility is a major advantage for Ayr’s customer base, which includes renewable energy developers, independent power producers, and data center builders. Equipment lead times for transformers have stretched so long that most customers must place orders long before their project plans are fully finalized, Reddy said. If project requirements change, they are often stuck with a transformer that is improperly sized for their site. Legacy manufacturers, meanwhile, build fully custom units for each individual project, making last-minute changes extremely difficult and costly.
Ayr and its investors are betting that the current demand surge will carve out space for a new major competitor to break into the industry. The startup plans to use this period of market disruption to gain a foothold, prove its reliability to customers, and eventually roll out next-generation technologies like solid-state transformers. “That was our game plan from day one,” Reddy said.
Update 2:20 pm ET: Additional details about Ayr’s total funding have been added to this report.
Startup Bets Century-Old Iron-Core Transformer Technology Can Meet the AI-Fueled Demand Surge
