SustainX Inc., an energy storage technology company, is moving its headquarters from Lebanon, N.H., to a larger facility in Seabrook, N.H.

The relocation, planned for Aug. 1, will move the company to a 42,000-square-foot site to accommodate planned production of its isothermal compressed-air energy storage (ICAES) technology. The technology is designed to use no fuel, relying instead on SustainX’s thermodynamic and hydraulic control developments.

Founded in 2007 by engineers at the Thayer School of Engineering at Dartmouth College, SustainX secured $5.4 million in funding in June 2010 from the Energy Storage Program of the U.S. Department of Energy. The funding contributed to an earlier $4 million financing.

SustainX has six U.S. patents on different elements of its compressed-air energy storage technology.