ERock finalized a $600 million initial public offering late on Tuesday, selling approximately 27.9 million shares at $21.50 each, the midpoint of its previously indicated $20 to $23 price band. The Houston, Texas-based natural gas generator manufacturer is slated to begin trading on the New York Stock Exchange on Wednesday under the ticker EROC.
The company, founded in 2006 and formerly known as Enchanted Rock, supplies natural gas-powered generator systems to data centers, utilities, and commercial and industrial clients across nine U.S. states. ERock reported that a significant share of its revenue derives from high-growth markets, notably Texas and California.
As part of its growth plans, ERock intends to grow annual assembly capacity to roughly 1.2 gigawatts by the end of 2026 via construction and development of its Hyperion facility in Houston. The expansion target was disclosed as a near-term objective alongside the IPO details.
Investment banks Morgan Stanley and J.P. Morgan acted as joint lead bookrunning managers for the offering.
The IPO occurs amid a broader uptick in U.S. public listings. The company joins a group of firms moving toward public markets this week, including high-profile technology and AI-related companies that have filed or are pursuing listings in New York.
Context and market positioning
ERock occupies a specific niche supplying on-site, natural gas generator capacity to customers where reliable backup or on-demand power is critical. Its customer base spans data centers, utilities, and commercial and industrial markets in multiple states, with notable revenue concentration in Texas and California. The planned Hyperion facility is a central component of the company's stated capacity growth strategy through 2026.
Financing details
The company sold roughly 27.9 million shares at $21.50 each, raising $600 million in gross proceeds. The sale price represents the midpoint of ERock's marketed IPO range of $20 to $23 per share. Morgan Stanley and J.P. Morgan served as joint lead bookrunning managers for the transaction.
What is not disclosed here
Certain operational, financial and long-term strategic details beyond assembly capacity targets, customer geography and the banks leading the transaction were not detailed in the materials referenced in this report.