ALEXANDRIA, Va., June 5 -- United States Patent no. 12,276,952, issued on April 15, was assigned to Scientific Environmental Design Inc. (High Point, N.C.).

"HVAC system and control methods for operation within a microgrid" was invented by Douglas Glass Benefield (Mt. Pleasant, S.C.).

According to the abstract* released by the U.S. Patent & Trademark Office: "An HVAC renewable energy management system and components to enable the efficient use of locally produced power from an onsite nanogrid and interconnected nanogrids of a cohesive direct current microgrid network. The system comprises a central controller for controlling one or more intermittent distributed energy resource (DER), source converter, distributed storage device, energy st...