The $500 Million Federal Research Grant With No Topic, No Deadline Pressure, and Almost No One Talking About It: Inside DOE's Office of Science Open Call

Most federal research money arrives with a topic attached. An agency decides it wants work on, say, solid-state battery interfaces or quantum error correction, writes a narrow funding opportunity, and researchers whose work happens to fit rush to apply before a hard deadline. It is an efficient way to buy research the government already knows it wants. It is a terrible way to fund the discovery it doesn't yet know it needs.

The Department of Energy's Office of Science runs a quiet counterweight to that model, and it is one of the most useful — and most underused — instruments in all of federal research funding. The FY2026 Continuation of Solicitation for the Office of Science Financial Assistance Program (DE-FOA-0003600) makes roughly $500 million available across approximately 500 awards, ranging from $50,000 to $5 million each, and it does something almost no other solicitation of its size does: it lets you propose whatever you want, so long as the work falls within the Office of Science's congressionally authorized mission. The window is open now and runs through September 30, 2026, at 11:59 p.m. Eastern.

For principal investigators at universities and national laboratories — and for the research-development offices that support them — this is not an opportunity to skim past. It is a standing invitation to bring the government your best idea rather than wait for the government to ask for it.

What an "open call" actually means

DE-FOA-0003600 is structured as an umbrella solicitation covering the seven program offices that make up the Office of Science:

• Advanced Scientific Computing Research (ASCR) — supercomputing, applied math, quantum information science, and the software that runs the nation's leadership-class machines
• Basic Energy Sciences (BES) — chemistry, materials, condensed-matter physics, and the science underpinning energy technologies
• Biological and Environmental Research (BER) — genomics, bioenergy, climate and earth-system science, and environmental microbiology
• Fusion Energy Sciences (FES) — plasma physics and the science of fusion as an energy source
• High Energy Physics (HEP) — the study of the fundamental particles and forces
• Nuclear Physics (NP) — the structure of nuclei and nuclear matter
• Isotope R&D and Production — the science and supply of the radioactive and stable isotopes medicine and industry depend on

The phrase that matters most in the solicitation is that "any research within SC's Congressionally authorized mission may be proposed." That is genuinely unusual. Where a targeted NOFO tells you what problem to solve, the open call asks you what problem you think should be solved and why DOE should pay for it. The burden shifts from fitting a predefined scope to making the case that your work belongs inside one of these seven mission areas.

The practical mechanics reinforce the point. There is no separate letter-of-intent or pre-application gate baked into the top-level solicitation, applications route through Grants.gov, and the process is governed by the DOE financial-assistance rules at 10 CFR 605. The single point of contact — sc.opencall@science.doe.gov — is a tell: this is designed to be an always-open front door.

Why so much money goes underclaimed

If there is $500 million on the table with an open topic and a year-long window, why isn't every eligible researcher in the country applying? Three reasons, each of which is also the strategy for exploiting it.

First, the open structure intimidates. A blank canvas is harder to paint than a paint-by-numbers. Many investigators are more comfortable responding to a specific call than constructing a self-justifying proposal from scratch. That discomfort is your opening: fewer people compete for a solicitation that requires them to define their own scope.

Second, the real gatekeeping happens upstream, informally. An open call is not a lottery you enter blind. The Office of Science expects — and program managers strongly prefer — that you make contact with the relevant program manager before you write. The seven offices each fund particular scientific priorities within their broad mandates, and a program manager will tell you, candidly, whether your idea has traction, whether it fits their portfolio, and whether now is the moment. Investigators who treat the open call as a cold submission are competing against investigators who treated it as a conversation. The email address in the solicitation is a starting line, not a mailbox.

Third, the timeline lulls people. A window open through September 30, 2026 feels like there is no urgency, so proposals drift to the bottom of the to-do list until the window is effectively gone. But an open, rolling solicitation often means proposals can be reviewed on a rolling basis against available funds — which rewards early, well-prepared submissions and punishes those who wait until money is committed. "No deadline pressure" is not the same as "no reason to move."

Who is eligible, and how to think about the range

Eligibility is broadly unrestricted — universities, national laboratories, nonprofits, and other research institutions can apply — which is consistent with the Office of Science's role as the single largest federal funder of the physical sciences. The award range, $50,000 to $5 million, spans everything from a modest single-investigator project or a piece of enabling instrumentation to a multi-year, multi-investigator research effort. Roughly 500 awards against $500 million implies an average near the $1 million mark, but the wide band means the solicitation genuinely accommodates both a junior faculty member's first federal grant and a senior team's flagship program.

That range is a planning tool. If you are early in your career, the open call is a rare chance to establish a DOE relationship at a scale a program manager can say yes to without a major portfolio commitment. If you lead an established group, it is a vehicle for the ambitious idea that no targeted NOFO happens to cover this cycle. Size the ask to the science and to what the program manager signals the office can absorb — not to the ceiling.

How to write into it

A winning open-call proposal does three things a targeted proposal often doesn't have to. It names its home — explicitly locating the work inside one of the seven program offices and, ideally, inside a specific program manager's stated priorities. It argues its own mission fit — spending real words on why this is DOE Office of Science work rather than NSF or NIH or private-sector work, because the reviewer cannot lean on a predefined scope to make that case for you. And it demonstrates that the conversation already happened — the strongest submissions arrive after a program manager has effectively encouraged them, and it shows in how precisely the proposal speaks to the office's language and goals.

The tactical sequence is therefore: identify the program office your work belongs to; read that office's current research priorities closely; email the relevant program manager a short, sharp description of your idea and ask whether it fits and whether there is appetite; incorporate their guidance; and submit early enough that a rolling review reaches you while funds are still uncommitted.

The Office of Science open call is, in the end, a bet the federal government makes on the researchers who know their fields better than any topic-writer in Washington does. It hands you the pen and asks you to define the problem. Most eligible investigators never pick it up. The ones who do — and who treat the program-manager conversation as the real first step — are competing for half a billion dollars in a lane most of their peers never enter.

Trying to figure out which federal research program your work fits, or tracking open DOE and NSF solicitations by field and deadline? Start with Granted's discovery tools.