The Energy Sciences Network (ESnet) is the U.S. Department of Energy's dedicated high-performance science network. Often described as the DOE's "data circulatory system," ESnet connects the Department's national laboratories, user facilities, supercomputing centers, scientific instruments, and research collaborators, enabling the movement of massive scientific datasets across the United States and around the world.

Operated by Lawrence Berkeley National Laboratory and funded by the DOE Office of Science, ESnet is designed specifically to support data-intensive research. The network provides high-capacity connectivity and advanced services that enable scientists to share data, access remote computing resources, and collaborate across institutional and geographic boundaries.

ESnet plays a critical role in many of the large scientific collaborations supported by the MGHPCC community. Research programs in fields such as high-energy physics, climate science, genomics, materials science, and AI-driven scientific discovery increasingly depend on reliable movement of data among instruments, storage systems, and computing resources located at different facilities. ESnet was built to support precisely these kinds of distributed scientific workflows.

As a home to advanced computing, storage, and data infrastructure, MGHPCC benefits from the broader research networking ecosystem that includes ESnet, Internet2, NEREN, and Northern Crossroads (NoX). Together, these networks help connect researchers to the data, instruments, and computational resources needed to advance modern science at scale