Grain Belt Express Targets 2026 Construction Start on $11 Billion HVDC Transmission Line After Surviving Federal Loan Cancellation and Legal Challenges
Invenergy's 800-mile high-voltage direct current transmission line across four Midwestern states is pressing ahead with private financing after the Trump administration cancelled a $4.9 billion DOE loan guarantee and the Illinois Supreme Court upheld the project's state permit.
Overview
The Grain Belt Express, an 800-mile high-voltage direct current transmission line designed to carry up to 5,000 megawatts of wind-generated electricity from southwest Kansas through Missouri and Illinois to the Indiana border, is targeting the start of Phase 1 construction in 2026. Developer Invenergy has committed to building the $11 billion project with private capital after the U.S. Department of Energy terminated a $4.9 billion conditional loan guarantee in July 2025, and a unanimous Illinois Supreme Court ruling in January 2026 cleared a key legal hurdle.
If completed, the line would rank as the largest transmission project in U.S. history and deliver electricity to approximately 1.8 million homes while adding bidirectional 600-kilovolt HVDC capacity to a grid that the Department of Energy itself has identified as critically undersized for the country’s growing power demands.
Federal Loan Cancellation
The DOE announced on July 23, 2025, that it was terminating a conditional loan commitment originally issued in November 2024 during the final weeks of the Biden administration. The agency stated that a financial review found the conditions necessary to issue the guarantee were unlikely to be met and that the federal government did not need to play a role in supporting the project.
The cancellation came one week after Missouri Senator Josh Hawley publicly stated he had made a personal appeal to President Trump to halt the project. Hawley called the decision a victory against what he termed a “boondoggle,” while Missouri Attorney General Andrew Bailey praised the outcome as benefiting landowners and taxpayers.
The Sierra Club’s Missouri chapter director, Gretchen Waddell-Barwick, criticized the cancellation as undermining grid reliability and job creation. The DOE noted it was conducting a broader review of approximately $100 billion in loans and conditional commitments issued during the presidential transition period.
Private Financing and Construction Contracts
Invenergy has signaled it will proceed without federal backing. In May 2025, the company awarded nearly $1.7 billion in combined construction contracts to Quanta Services, which will serve as engineering, procurement, and construction contractor for the line’s lattice towers and transmission infrastructure, and Kiewit Energy Group, which will build two HVDC converter stations. Siemens Energy has signed a separate supply agreement for HVDC transmission technology, and Prysmian North America will supply 12,500 miles of conductors.
An Invenergy spokesperson stated that a privately financed Grain Belt Express would “advance President Trump’s agenda of American energy and technology dominance while delivering billions of dollars in energy cost savings, strengthening grid reliability and resiliency, and creating thousands of American jobs.”
Phase 1 covers the first 530-mile section connecting Kansas and Missouri with 2,500 megawatts of capacity, and is expected to take approximately three years to complete. The full project, spanning all four states, aims for 5,000 megawatts and a target completion around 2029.
Legal Battles Resolved
The project’s path through the courts has been equally turbulent. The Illinois Farm Bureau and a coalition of landowners challenged Invenergy’s use of eminent domain to secure right-of-way across more than 400 miles of Kansas farmland. An Illinois appeals court overturned the project’s state permit in 2024, ruling that the developer had failed to prove it could finance the line without harming consumers.
In January 2026, the Illinois Supreme Court reversed that decision in a unanimous 6-0 ruling, finding that financial capability need not be proven upfront. Justice Mary K. O’Brien wrote that “evidence of the industry’s method of financing large-scale energy projects” was sufficient to support issuing the construction certificate.
The ruling was a significant victory for Invenergy after 15 years of legal and regulatory battles across multiple states, though the court remanded some remaining challenges to lower courts for further consideration.
What Comes Next
The project’s environmental review and permitting process for Phase 1 is expected to reach completion in April 2026, according to the federal Permitting Dashboard. Phase 1 construction is estimated to create over 4,000 jobs. Invenergy has reported executing $105 million in landowner easement agreements, with $19 million already paid and an additional $86 million due when construction begins.
The Missouri Public Service Commission has estimated the project would save Missouri consumers $17 billion in lower electricity bills over the line’s operational life. Whether Invenergy can secure the remaining private capital to fully replace the lost federal loan guarantee — and whether lingering legal challenges will cause further delays — will determine if the largest transmission build in U.S. history breaks ground on schedule.