Three Things U.S. Utilities Need to Know About DOE’s $1.9B SPARK Funding Opportunity

March 19, 2026

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Kelda Rericha

Sr. Marketing and Communications Manager US

kelda.rericha@heimdallpower.com

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On March 12, 2026, the U.S. Department of Energy (DOE) unveiled a $1.9 billion funding opportunity designed not just to modernize transmission infrastructure, but to do it on an accelerated timeline that’s already forcing utilities to shift gears.

The program, known as the Speed to Power through Accelerated Reconductoring and other Key Advanced TransmissionTechnology Upgrades (SPARK) initiative, targets investments in Advanced Transmission Technologies (ATTs) such as Dynamic Line Rating (DLR).

With concept papers due in just weeks, utilities face a narrow window to respond. Here are three key takeaways for utilities entering the race:
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1) This isn’t a perfect-polish moment: It’s a “get in the game” or you won’t play opportunity. Heimdall Power can help you get in the game.

The first instinct for many utilities may be to slow down, scope everything, and submit a fully baked plan. SPARK doesn’treward that instinct, at least not yet: initial concept paper must be submitted by April 2, 2026.

Utilities should know that your initial concept paper is non-binding, and industry leaders like the WATT Coalition describe it as more of a qualifying round than a final pitch.

In fact, most of what DOE is asking for at this stage is technical in nature, not a detailed execution roadmap.

Utilities can submit up to three concept papers across the program’s categories—grid resilience, smart grid, and grid innovation—giving them room to explore multiple pathways.

Our SPARK Fast Take: The April 2 deadline is about showing up, not showing everything. Reach out and let us provide support and guidance in the concept phase and jumpstart progress ony our full application, which is due May 20, 2026.

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2) DOE is prioritizing projects that quickly increase capacity using existing infrastructure.

For all its breadth, SPARK has a very clear bias: speed-to-capacity within existing rights-of-way.

That’s where ATTs, especially DLR, standout.

Reconductoring projects face a high bar, needing to demonstrate at least a 50% increase in capacity. DLR and similar ATTs, by contrast, must show a minimum 25% increase, a target that industry data—and Heimdall Power customer results—suggests is routinely exceeded. Including Heimdall Power as DLR sub-applicant can improve an application and help it stand out from the rest.

But capacity is only part of the story. The DOE is looking forgains across four benefit categories, meaning the strongest concept papers willtell a multi-dimensional value story, not just a technical one.

Our SPARK Fast Take: Let our team help you demonstrate benefits across all four DOE requirement categories through quick-turn line studies and field-tested proof points.

Project Benefit Requirements Categories for SPARK Funding	Heimdall Power DLR Customer Proof Points
a) Capacity Increase and Deliverability	Across the first full year of its DLR deployment, the largest in the US at the time (July 2024–2025) based on sensor count, Great River Energy (Minnesota) experienced average conductor capacity gains of 50.5% in the summer and 22.5% in the winter.¹
b) Reliability and Resource Adequacy	Using Heimdall Power DLR, Great River Energy estimates it saved $30,000 by avoiding a single, 48-hour congestion event in July 2024.²
c) Affordability and Customer Benefit	A simulation of the New England grid area led by the Idaho National Laboratory found that investments in DLR would begin yielding net benefits in a matter of months, compared with years for traditional transmission expansion.³ Speed-to-value is generated by capital deferment, too: One major West Coast utility anticipates $244.5 million annual in deferred costs thanks to Heimdall Power DLR across just five lines.
d) Replicability and Scale-Up Framework	In January 2026, over a remarkable five-day effort, Heimdall Power installed 31 Neurons by drone in Louisiana, Texas, and Arkansas despite unprecedented winter conditions.⁴ Heimdall Power has previously installed as many as 17 sensors in one day, making our replicable scalability unmatched.⁵
[Performance expectations are detailed in Section D of the funding notice (Part 1)]

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3) Don’t start from scratch—and don’t concept alone. Build on what you already have, leveraging partnership to enhance existing projects.

With tight deadlines and large project scopes, the biggest challenge may not be related to concepts, but coordination.

Utilities we’ve spoken to in the early days post-announcement are re-allocating existing projects and budgets—reconductoring, congestion hotspots, and renewable interconnection bottlenecks are prime candidates—and forming partnership with vendors, and even peer utilities.

Our SPARK Fast Take: Tap into what you’ve already scoped, and team up with vendors and peer utilities to move fast.

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A quick sprint in the grid modernization marathon

In an industry often defined by long timelines and careful planning, SPARK represents something different: a compressed, high-stakes opportunity to think big, act fast, and scale what works.

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Heimdall Power is trusted by:

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_[1]_{Grid Optimization Gets Real: One Year Inside America’s Largest DLR Deployment,August 2025}_‍

_[2]_{Grid Optimization Gets Real: One Year Inside America’s Largest DLR Deployment,August 2025}

_{[3] Grid Enhancing Technologies Brief, National Conference of State Legislatures, Oct.24, 2025}

_{[4] Ente}_{rgy Sets U.S. Record with Multi-State DLR Deployment by Drone, Feb. 4, 20}₂₆