ERock launches IPO as data center power demand fuels growth

ERock’s RockBlock, the company’s modular onsite power system. The company is launching an IPO.

ERock Inc., formerly known as Enchanted Rock, has launched the roadshow for its proposed initial public offering, seeking to capitalize on growing demand for natural gas-powered distributed generation systems as utilities, data centers and industrial customers confront mounting grid constraints.

The Houston-based company plans to offer 27.9 million shares of Class A common stock at an expected price range of $20 to $23 per share and intends to list on the New York Stock Exchange under the ticker symbol EROC.

The offering comes as ERock positions itself as a provider of onsite, utility-grade natural gas generation systems designed to help customers bridge lengthy utility interconnection delays, provide backup power and support grid reliability. The company serves data centers, utilities and commercial and industrial customers through a vertically integrated model that includes equipment design, installation, operations, maintenance and asset management services.

According to its registration statement, ERock has deployed more than 2,000 generating units across approximately 400 operating sites, representing an installed base of roughly 1,000 MW. The company reported a contracted power system sales backlog of approximately $1.3 billion as of March 31, 2026.

The company’s growth strategy is closely tied to the rapid expansion of artificial intelligence infrastructure and data centers, which are driving some of the strongest electricity demand growth seen in decades.

ERock cited projections showing U.S. electricity demand increasing at an annual rate of approximately 5.7% between 2025 and 2030, with data centers accounting for nearly half of total demand growth during that period. The company argues that existing transmission and generation infrastructure is struggling to keep pace, creating opportunities for distributed natural gas generation systems that can be deployed more rapidly than traditional utility-scale solutions.

“Speed-to-power” has become a key selling point for the company.

While utility interconnections for large projects can take several years, ERock says it has assembled and delivered power systems in as little as six months, with complete project commissioning typically occurring within 12 to 18 months from contract signing. The company’s bridge-power model allows customers to operate on onsite generation while awaiting permanent utility connections, after which the same equipment can continue serving as backup or dispatchable generation assets.

At the core of ERock’s offering is its proprietary RockBlock generating system, a modular natural gas-fueled generator package capable of scaling from 1.5 MW to 3.5 MW per unit. The systems are designed to provide utility-grade power while meeting stringent emissions requirements, including California Air Resources Board distributed generation standards. The company says its generators can achieve 99.999% reliability and provide diesel-equivalent transient response performance while utilizing natural gas delivered through existing pipeline infrastructure.

The company believes natural gas generation will continue playing a critical role in meeting growing electricity demand, particularly as AI data centers require firm, dispatchable power. ERock cited International Energy Agency forecasts indicating that natural gas-fired generation will expand significantly through 2035 to support rising data center loads, with much of that growth occurring in the United States.

For the natural gas industry, the company’s business model represents another example of how growing power-sector demand is creating new opportunities for gas-fired generation outside traditional utility power plants.

In addition to supplying backup power, ERock’s systems participate in demand-response programs and grid-support events. The company reported supporting more than 236,000 grid-support events during the past eight years, helping utilities address capacity constraints and maintain grid stability during periods of high demand.

The company’s customer roster includes data center developers, utilities and large commercial operators. Customers cited in the prospectus include Microsoft, Foxconn, Wistron, Entergy, ComEd, H-E-B and Walmart.

To support expected growth, ERock is expanding manufacturing capacity in Houston. The company currently assembles equipment at its Titan facility and is developing a second facility, Hyperion, with a goal of increasing annual assembly capacity to approximately 1.2 GW by the end of 2026. Management said the assembly model relies on standardized designs and a largely multi-sourced supply chain, allowing production to scale without major incremental capital investment.

ERock reported revenue of $183.1 million in 2025, up 42.5% from the previous year. First-quarter 2026 revenue reached $31.7 million, an increase of 31.6% year over year. The company posted a net loss of $59 million for 2025 and a first-quarter 2026 net loss of $17.2 million as it continues investing in expansion. Meanwhile, contracted backlog increased nearly eightfold year over year to $1.28 billion as of March 31.

The IPO will provide additional capital as ERock seeks to expand production capacity and pursue what it sees as a rapidly growing market for distributed, natural gas-powered generation. For the gas compression, pipeline and power-generation sectors, the company’s public debut underscores the increasingly important role that natural gas infrastructure is expected to play in supporting data centers, industrial electrification and grid reliability in the years ahead.