sublime

Market position

Positioned as a producer of a next-generation replacement for ordinary portland cement, backed by building materials and construction companies including Holcim, CRH, Siam Cement Group and Suffolk Construction, and framed as part of a US-based reinvention of cement manufacturing.

Kiln-free, ambient-temperature electrochemical production; feedstock flexibility including industrial solid waste; co-production of critical minerals; claimed higher durability than OPC; whiter cement color; and grid-flexible operation.

Technology

An electrochemical, ambient-temperature cement manufacturing process that eliminates the kiln used in OPC production. The company reports 30-40% lower energy intensity, the ability to ramp production up and down to integrate with a modern electricity grid, avoidance of CO2, CO, NOx, SOx, mercury and particulate emissions, and the ability to process almost any rock, including toxic industrial solid waste, into cement plus pure minerals. The resulting cement is described as more durable than OPC in most use cases and whiter in color due to the inherently purifying process.

Go-to-market

The company tests and validates its cement to gain acceptance from large cement manufacturers, architects, general contractors and ready-mix concrete leaders, and partners with building materials and construction firms that are also investors. It has deployed cement in real-world projects since 2023.

Cement manufacturers, technology hyperscalers, architects, general contractors and ready-mix concrete producers, as well as owners of projects in high-polish interiors and harsh exterior environments where durability, aesthetics and urban heat island reduction matter, and customers seeking to reduce the carbon footprint of construction materials.

Geography

Headquartered in the United States, with an emphasis on domestic US manufacturing and supply chains.