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The ASCR Leadership Computing Challenge (ALCC) is a grant from the Department of Energy (DOE) Office of Science that funds access to time on DOE's leadership-class supercomputers, including Frontier, Aurora, Polaris, and Perlmutter. The program prioritizes high-risk, high-payoff scientific computing projects aligned with DOE mission areas, responses to national emergencies, and efforts to broaden access to advanced HPC resources.
Eligible applicants include researchers from universities, industry, and government agencies; DOE sponsorship is not required. Allocation periods run for one year from July 1, 2026 to June 30, 2027, with the application deadline on November 1, 2026. Renewals of up to three years are possible.
This is a compute resource allocation, not a cash grant.
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ASCR Leadership Computing Challe...
| U.S. DOE Office of Science (SC) ASCR Leadership Computing Challenge (ALCC) Allocation Program The ASCR Leadership Computing Challenge (ALCC) is an allocation program for projects of interest to the Department of Energy (DOE), with an emphasis on high-risk, high-payoff scientific campaigns enabled via high-performance computing (HPC) in areas directly related to the DOE mission, that respond to national emergencies, or that broaden the community of researchers capable of using leadership computing resources.
The ALCC program is managed by the Advanced Scientific Computing Research (ASCR) program office in the DOE’s Office of Science.
ASCR stewards several high-performance computing user facilities including the National Energy Research Scientific Computing Center ( NERSC ) located at Lawerence Berkeley National Laboratory and the Leadership Computing Facilities located at Argonne National Laboratory ( ALCF ) and Oak Ridge National Laboratory ( OLCF ).
Each year, between 10%-30% of the available resources at these user facilities are available to research supported through the ALCC allocation program. The allocation year runs from July 1 – June 30 th of the subsequent year, with a possibility of renewal for up to 2 years. alcc-ascr@science.
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According to the current listing, eligibility includes: Open to researchers with high-risk, high-payoff research aligned with DOE mission areas. Confirm the full requirements in the official notice before applying.
Applications for ASCR Leadership Computing Challenge (ALCC) are due November 1, 2026. Build your timeline backwards from this date to cover registrations, approvals, and final submission checks.
ASCR Leadership Computing Challenge (ALCC) is funded by Department of Energy (DOE) Leadership Computing. Verify program details on the funder's official page before applying.
This listing is flagged as international in scope. Check the official notice for country-specific restrictions before applying.
Applications go through the funder's official portal — the Apply Now link on this page goes there directly.
The DOE ASCR Leadership Computing Challenge (ALCC) provides allocations of computing time on the nation's most powerful supercomputers for high-risk, high-payoff scientific campaigns aligned with DOE priorities. For the 2026-2027 cycle, available resources include 20 million node-hours on Frontier (exascale, Oak Ridge), 16 million node-hours on Aurora (exascale, Argonne), 1 million node-hours on Polaris (Argonne), and 3.5 million combined CPU and GPU node-hours on Perlmutter (NERSC, with 7,000+ NVIDIA A100 GPUs). ALCC projects span modeling, simulation, artificial intelligence, and data analysis. New for 2026-2027: multi-year proposals of up to three years are accepted, and the process has been simplified to a single proposal without a pre-proposal stage. The estimated commercial value of allocations ranges from $500,000 to $10 million or more per project depending on scale. The 2026-2027 application deadline was January 26, 2026; the program cycles annually with the next call expected November 2026.
ASCR Leadership Computing Challenge (ALCC) is sponsored by U.S. Department of Energy (DOE) Leadership Computing Facilities. The ALCC targets high-risk, high-payoff research aligned with DOE mission areas, providing computing time on exascale systems. The program now accepts multi-year proposals of up to three years, and the submission process has been simplified.
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