DOE selects 31 projects to expand capacity on existing transmission lines

The projects combine physical upgrades with tools that help operators use existing lines more effectively.

DOE intends to contribute $1.9 billion, alongside $3.35 billion from recipients. The announced work includes rebuilding or replacing conductors on more than 1,500 miles of transmission lines and deploying grid-enhancing technologies across nearly 21,000 miles. These are different descriptions of planned work; the announcement does not establish whether their footprints overlap, so adding the mileages would create a misleading total.

The technologies solve related but distinct problems. Reconductoring changes the equipment carrying electricity. Dynamic line rating updates an operating limit using actual conditions, while power-flow controls can redirect electricity toward routes with spare capacity. A network may need both a stronger physical connection and better information about how much it can safely carry.

Across the selections, DOE projects more than 23 gigawatts of additional grid capacity. That is a transfer-capacity forecast, not newly built generation or a measurement of electricity already delivered. Likewise, the stated aim of reducing customer costs is an intended benefit, rather than an observed change in household bills.

The programme page makes the next milestone concrete: awards are expected between October 2026 and January 2027. For grid technology companies, utilities and local observers, the useful work begins with identifying the relevant selected project, its technical bottleneck and its delivery obligations. A funding intention becomes valuable infrastructure only when equipment, operating practice and verified performance catch up with it.