At SCG’s cement plant in Saraburi Province, Thailand, Rondo Energy and SCG Cleanergy have inaugurated Southeast Asia’s first industrial heat battery.
The industrial heat battery is now delivering 2.3MWth of continuous steam, charged from both the grid and a nearby floating solar farm. Superheated steam from the unit powers a turbine, generating round-the-clock clean electricity for cement production.
“Today we’re announcing three big steps in Rondo’s journey,” said Rondo CEO Eric Trusiewicz. “We’re launching our first unit that is part of our new modular sizing approach, our first heat battery in South-East Asia, and the only one worldwide delivering high-pressure steam used for electric power generation.”
The industrial heat battery installation is a 33MWh Rondo Heat Battery, the first built on the company’s modular platform. Rondo now offers units ranging from 33MWh to more than 1GWh, all based on a common design and supply chain. Mass-manufactured brick and wire heating elements can be configured to suit applications from food and beverage producers to large-scale chemical plants and metals refineries.
Constructed entirely in Thailand with extensive use of local suppliers, the project highlights how Rondo’s brick-based storage technology can combine modular efficiency with regional supply chains. SCG Cleanergy is now developing further clean industrial heat projects across Southeast Asia.
“This project shows that powering industry with clean energy is not just possible—it’s economical and fast,” added Trusiewicz. “Our team and SCG built this first-of-its-kind system in just eight months.”

