Arctic Sand, a developer of energy-efficient power-conversion technology, has raised $6.6 million in a round of venture capital, according to a new filing by the company with the Securities and Exchange Commission. Four separate investors participated in the offering.

Arctic Sand revolutionizes power conversion & saves millions $$ for data centers in electricity at no cost. The co-founders Nadia Shalaby (CEO) and David Giuliano (CTO) met through a class at the MIT Sloan School of Management.

Arctic Sand is commercializing power conversion technologies to reduce energy consumption and enable broad technology reach to the consumer and industrial sectors. Efficient power conversion can bring value to numerous markets with power conversion products, such as increased battery life in mobile devices, more power generated by solar cells, extended driving range of electric and hybrid vehicles, reduced standby losses in consumer electronics, and reduced electricity spending in data centers.