Rondo Energy Inc.

Rondo Energy Inc. is a U. S. -based company specializing in advanced thermal energy storage solutions.

Their flagship product, the Rondo Heat Battery, efficiently converts renewable energy into sustainable industrial heat and power. Founded in 2020 in Alameda, US, Rondo Energy Inc. focuses on innovative energy solutions. The company has raised USD 5.

00 mn through a SERIES B round from Goldman Sachs Merchant Banking Division, contributing to a total funding of USD 5. 00 mn and a current valuation of USD 491. 325 mn. With a record of six deals, Rondo is positioned to expand further.

Rondo Energy specializes in providing innovative thermal energy storage solutions through its flagship product, the Rondo Heat Battery. This technology effectively converts intermittent renewable energy sources, such as wind and solar power, into a reliable and continuous supply of industrial heat and power. By utilizing refractory bricks that can be heated to temperatures ranging from 1100°C to 1500°C, the Rondo Heat Battery stores thermal energy for extended periods—hours or even days—delivering superheated air for various industrial applications with an impressive efficiency rate of over 98%. The company's solutions cater to a diverse client base across multiple sectors, including food and beverage, cement, chemicals, fuel, and textile production.

Rondo Energy is actively engaged in markets throughout Europe and North America, partnering with industry leaders like HEINEKEN and Siam Cement Group to facilitate the deployment of its technology in large-scale energy projects. Rondo Energy operates on a business model centered around the deployment of its Heat Battery technology through partnerships and direct sales to industrial clients. Revenue is generated primarily through sales of its thermal storage systems, as well as ongoing service agreements that may include maintenance and support. These transactions are structured as B2B agreements, where Rondo collaborates with large manufacturers and industrial enterprises to tailor its solutions to their specific energy needs.

The company has announced over USD 160 mn in funding, supporting the commercialization of its products and the establishment of multiple commercial developments. While exact pricing details for the Rondo Heat Battery and associated services are not disclosed, the firm’s focus on providing cost-effective, zero-carbon industrial heat solutions positions it favorably within the market for sustainable energy technologies. In January 2025, Rondo Energy raised USD 5 million in SERIES B funding from Goldman Sachs Asset Management. This funding will be utilized to grow its international operations and to develop and build storage projects.

Rondo is focused on expanding into new markets, with plans to target additional regions in Europe and North America within the upcoming years.