DOE grid selections target more than 20 gigawatts of capacity from existing corridors

The Department of Energy said on September 24 that its latest Speed to Power, or SPARK, selections will support 31 grid-improvement projects across 26 states. According to the department’s announcement, the projects are intended to unlock more than 20 gigawatts of additional grid capacity by applying advanced transmission technologies to infrastructure that is already in service.

A central tool is reconductoring, which replaces an existing line’s conductors with higher-capacity equipment. DOE said selected projects pair that work with other advanced transmission technologies intended to improve operational efficiency and reliability. The approach can be especially consequential where new generation, industrial loads and data centers are waiting on interconnection but entirely new corridors would take years to permit and build.

Reusing established rights of way does not eliminate project complexity. Owners still have to evaluate structures, clearances, substation equipment, protection systems, outage windows and construction access. Higher-capacity conductors can change mechanical and thermal assumptions, while digital controls and monitoring add cybersecurity, communications and commissioning requirements.

The selections also shift attention from announced megawatts to deliverable capacity. A project can be technically attractive yet remain constrained by procurement lead times, utility approvals or the ability to take a circuit out of service. For suppliers, the near-term opportunity is likely to emerge through utility-specific engineering and equipment packages rather than through one federal procurement.

DOE’s September 24 notice identifies the selected portfolio and its expected capacity effect. It does not mean every project is ready for construction. Utilities and public power entities will establish their own schedules, cost shares and contracting plans. The next useful indicators will be award negotiations, final scopes, equipment orders and outage plans that turn the federal selection into field work.

Representative photo: high-voltage transmission tower. Photo by Novoklimov, CC BY 4.0. No editorial alterations; display versions may be resized or cropped.