Amperesand

Amperesand builds advanced Solid State Transformer (SST) power conversion systems for AI data centers, industrial electrification, and utility applications. Founded in 2023 as a spin-out from the Energy Research Institute at Singapore's Nanyang Technological University (NTU), the company's third-generation SST delivers medium-voltage to low-voltage conversion efficiency greater than 98.5%, greater than 80% reduction in electrical equipment footprint versus traditional infrastructure, and 99.999% uptime. The platform is built on a decade of R&D and silicon carbide (SiC) power electronics, enabling fast deployment and integration with renewable energy assets. Amperesand operates manufacturing and engineering centers in Reno, Nevada and San Francisco, California, with R&D headquarters in Singapore. In 2025, the company raised an $80M Series A co-led by Walden Catalyst Ventures and Temasek.