DOE Selects 31 Projects for $1.9 Billion in SPARK Grid Funding

The U.S. Department of Energy on September 24 announced its intention to help fund 31 grid-improvement projects across 26 states through the SPARK initiative. The SPARK grid funding package would combine $1.9 billion in federal support with $3.35 billion in recipient cost-share funding, for $5.25 billion in total planned investment. The September 24 announcement says the selected projects are expected to make more than 23 GW of additional electricity capacity available by expanding the capability of existing transmission infrastructure rather than relying only on new power-line corridors.

The planned SPARK grid funding would support reconductoring or rebuilding more than 1,500 miles of transmission lines and deploying grid-enhancing technologies across nearly 21,000 miles. DOE says those technologies can increase the usable capacity of existing assets, reduce congestion and improve reliability while making greater use of existing rights-of-way.

SPARK grid funding targets existing transmission corridors

SPARK stands for Speed to Power through Accelerated Reconductoring and other Key Advanced Transmission Technology Upgrades. The DOE program page says the initiative prioritizes advanced conductors, grid-enhancing technologies and larger cross-regional upgrades that can expand transfer capability without requiring entirely new transmission corridors in every case.

Reconductoring replaces existing conductors with higher-capacity equipment while retaining much of the existing transmission corridor. Grid-enhancing technologies can include tools such as dynamic line ratings, advanced monitoring and power-flow controls that allow operators to use transmission assets more efficiently under changing system conditions.

The approach differs from projects such as the North Plains Connector, which would create a new 3 GW high-voltage direct-current pathway between Montana and North Dakota. SPARK is focused primarily on extracting more capacity, flexibility and reliability from infrastructure and rights-of-way that already exist.

DOE says the selected projects could unlock more than 23 GW

DOE estimates the 31 selected projects could collectively make more than 23 GW of additional electricity capacity available. That figure represents added transmission capability associated with the proposed upgrades, not 23 GW of new electricity generation.

The agency’s selected-applications document shows a wide range of projects. PPL Electric Utilities, for example, requested about $71.5 million in federal funding for the Montour Advanced Reconductoring Project in Pennsylvania, while Rocky Mountain Power requested about $87.5 million for upgrades and advanced line-rating technology intended to increase transmission capacity across parts of Utah, Idaho and Wyoming.

Other selections are designed around real-time grid monitoring and control. New England Power Company proposed a system that would use advanced modeling software and targeted field sensors to adjust transmission capacity ratings across its network based on operating conditions. CenterPoint Energy Houston Electric proposed an advanced stabilization device intended to improve system response during high-loading conditions.

Several selections are tied directly to large-load growth

Some SPARK projects explicitly connect transmission upgrades with the growth of data centers and other major electricity users. Alabama Power’s Northeast Alabama Smart Grid Deployment project is intended to unlock capacity for large-scale data centers, industrial manufacturers and other commercial facilities. Entergy Mississippi’s selected project proposes a three-state deployment across Arkansas, Louisiana and Mississippi that the company says would support the region’s next wave of data-center and industrial growth.

That connection matters because utilities are increasingly planning transmission and substation investments around very large proposed loads. Microgrid Media has previously examined Houston grid investment tied to a large pipeline of data-center projects, as well as large-load reliability requirements that are forcing grid operators to examine how major computational loads behave during system disturbances.

Independent reporting from Utility Dive also noted that at least two of the selected projects are intended to strengthen transfer capability between the Eastern and Western interconnections, where the ability to exchange electricity between regions remains limited.

The selections are not final awards yet

The September 24 announcement is a selection milestone, not a statement that all $1.9 billion has already been fully awarded or spent. DOE’s SPARK schedule lists expected award dates from October 2026 through January 2027, and the agency’s project document states that individual project details remain subject to change pending finalization of formal financial-assistance agreements.

That distinction is important for interpreting the SPARK grid funding package. Project scopes, funding amounts, schedules and implementation details could still change before agreements are finalized. Individual projects may also require separate permitting, procurement, engineering and utility approvals before construction or technology deployment begins.

What happens next

DOE is expected to move the selected applications toward formal financial-assistance agreements over the coming months. If the projects proceed substantially as described, the program would provide a large-scale test of whether reconductoring, dynamic line ratings, advanced controls and other transmission technologies can deliver meaningful new grid capacity faster than conventional greenfield expansion alone.

For utilities facing rapid demand growth, the larger question will be how much of the projected 23 GW of additional transmission capability becomes operational, how quickly the upgrades can be deployed and whether the projects measurably reduce congestion and improve reliability once in service.