DOE Just Opened a $400 Million Door With No Deadline. The Catch Is That the Calendar Is Hidden Inside the Document.

On September 30, 2026, the Department of Energy's Office of Science posted DE-FOA-0003665 — the FY 2027 Continuation of Solicitation for the Office of Science Financial Assistance Program. The next day, DOE put out a press release giving it a round number: up to $400 million, announced as "Basic Research to Advance the Frontiers of Science," with a quote from Under Secretary for Science Darío Gil framing it as the place "where the breakthroughs that shape America's future begin" and a nod to the executive order Restoring Gold Standard Science.

Inside DOE, nobody calls it that. They call it the Open Call, and it is the single most misunderstood instrument in federal basic research funding.

The misunderstanding is simple. The NOFO says it "will remain open until September 30, 2027, 11:59 PM Eastern Time, or until it is succeeded by another issuance." Read that sentence and you conclude there is no deadline. Then you read 130 pages of program narrative and discover that High Energy and Nuclear Physics expects to convene its comparative review panels in November 2027, that one HENP topic's FY 2027 panels required submission to the previous open call, that Biological and Environmental Research anticipates holding merit review panels during FY 2027, and that at least one subprogram states flatly that applications "without an encouraged pre-application will not be considered by the review panels."

The deadline is not absent. It is distributed across six program offices and buried in prose. Missing it does not get you a rejection — it gets you a twelve-month hold.

What the Open Call actually is

The instrument is older than most of the people applying to it. On September 3, 1992, DOE published the Office of Energy Research Financial Assistance Program as a Final Rule at 10 C.F.R. part 605, and that rule contained a standing solicitation. Every year since, the Office of Science has reissued the continuation notice. DE-FOA-0003665 is this year's edition, published against NOFO Part 2 Version 4.1.

The scope is extraordinarily broad. Six program areas are named:

• Advanced Scientific Computing Research (ASCR)
• Basic Energy Sciences (BES)
• Biological and Environmental Research (BER)
• Fusion Energy Sciences (FES)
• High Energy and Nuclear Physics (HENP)
• Isotope R&D and Production (IRP)

And the operative sentence is this one: "Any research within SC's congressionally authorized mission may be proposed under this NOFO." The Open Call exists to catch everything the topical NOFOs do not. When DOE posts a targeted announcement — the Quantum Genesis Q Competition, say, or the Early Career Research Program — it carves a slice out of the portfolio and competes it on a fixed date. The Open Call is the remainder, and the remainder is where most of the Office of Science's university research base actually lives.

Mechanics worth knowing before you write anything:

• Funding instruments: grants, cooperative agreements, interagency agreements, or Other Transaction Authority awards including Technology Investment Agreements. That OTA line is new-ish and consequential — see the cost-share trap below.
• Period of performance: six months to five years, most commonly three years.
• Budget periods end between December 1 and June 30. DOE says this explicitly, and the reason is workload smoothing — the office is deliberately spreading renewals across the calendar. Prepare 12-month budgets; actual cycle dates get negotiated at award. Budget periods generally run no shorter than nine months and no longer than 18.
• Assistance Listing 81.049.
• Continuation funding is contingent on appropriations, progress, reporting, and compliance — the standard four-part clause, and in a year that is operating under a continuing resolution through December 11, the first of those four is not boilerplate. The $400 million figure in the NOFO is stated as "approximately $400,000,000 in current and future fiscal year funds, subject to the availability of future appropriations."

The eligibility rules that surprise people

The Open Call's eligibility section is unusual among federal research NOFOs, and three provisions catch applicants out.

DOE and NNSA National Laboratories cannot apply as primes. They may be proposed as subrecipients, but if a lab subaward is recommended for funding, the value is removed from the prime's award and routed to the lab through the DOE Field-Work Proposal System — at which point none of the NOFO's administrative provisions apply to the lab. If you are a university building a team with a lab partner, your award will be smaller than your proposal, by design, and the lab's scope lives under a different instrument. Budget and manage accordingly, and secure authorization from the cognizant Contracting Officer early.

Non-DOE FFRDCs and other federal agencies can apply — as leads or team members — with funding flowing through interagency agreements. That makes the Open Call one of the few places a NASA center or a non-DOE FFRDC can lead a DOE-funded basic research project.

501(c)(4) organizations that lobbied after December 31, 1995 are categorically ineligible. Otherwise, "all types of applicants are eligible."

Two further notes are written as advice but function as warnings. Unaffiliated individuals must demonstrate they "possess the skills, abilities, and resources" to do the work. And non-domestic applicants must include "a detailed demonstration of how the applicant possesses the skills, resources, and abilities that do not exist among potential domestic applicants." That is a high bar stated in a low-key voice.

The cost-share trap hiding in the instrument list

Cost sharing for basic and fundamental research is not required, under an exclusion from Section 988 of the Energy Policy Act of 2005. Cost share is also explicitly excluded from merit review and award selection — DOE will not reward you for volunteering it.

Then comes the sentence that changes the arithmetic: "For OTA awards, to the maximum extent practicable, non-Federal parties carrying out a research, development, and demonstration project under an OTA award are to provide at least 50% cost sharing."

Restated in the regulatory frame DOE uses a paragraph later: cost share is not required for awards under 2 C.F.R. part 200 or part 910; it is required for awards under 2 C.F.R. part 930. Part 930 is the OTA pathway.

So the funding instrument determines whether you owe half the project cost. A for-profit applicant proposing something that reads as research, development, and demonstration can find itself negotiated into an OTA and a 50 percent match it never budgeted. If you are a company applying here, state your expected instrument in the application and understand that the unallowable-cost-share list is long: no federal sources, no DOE loan proceeds, no prospective royalties, no asset-sale proceeds, no in-kind "existing data" valuations, nothing already counted toward another federal project.

"Not of interest" is a two-item list, and one item is about you

DOE names only two categories it will decline without appeal: applications outside the technical parameters in the Background and Context sections, and "project concepts or approaches not based on established scientific principles (e.g., violates the laws of thermodynamics)." The perpetual-motion clause is genuinely in there.

But the harder screen sits earlier in the document: "This NOFO does not support an applicant's commercial activity. This NOFO supports basic research to advance understanding rather than to address commercial opportunities. Applications that propose research related to current commercial activity or current customer needs may be declined without merit review."

For startups, that is the whole game. A proposal framed around a product roadmap, a pilot customer, or a technology-readiness-level climb will not reach reviewers. The same science framed as an open question about mechanism will. This is the opposite of the framing that wins SBIR awards, and companies that run a successful SBIR narrative through the Open Call get declined on responsiveness without ever learning whether the science was good.

How the hidden calendar actually works

There is no Letter of Intent — the NOFO says "Not applicable." There is a pre-application, and the difference between optional and required is where the money is won or lost.

The baseline rule: pre-applications may be submitted at any time, are "recommended but optional for many topics," and are submitted through PAMS at pamspublic.science.energy.gov. Format is strict and short — a title page that does not count against the limit, then three pages maximum at 11-point minimum with one-inch margins, figures and references included in the three. Plus a list of senior/key personnel and a list of individuals who should not serve as merit reviewers. DOE notes drily that the no-reviewer list "is rarely empty because the instructions contain mandatory inclusions requirements." Must be machine-readable; do not submit a scan. Only the lead institution may submit for a multi-institution team.

The exceptions are what you came for. Scattered through the program narrative:

• Some topics have required or strongly encouraged pre-application dates tied to specific review panels.
• At least one subprogram states that applications arriving without an encouraged pre-application will not be considered by the review panels at all.
• HENP expects to convene merit review panels in November 2027 for FY 2028 research areas, and for FY 2027 expects comparative review panels in early 2027 — with one topic's FY 2027 panel requiring that the application had been submitted to the previous open call.
• BER anticipates FY 2027 merit review panels.
• FES expects FY 2028 panels in November 2027.
• And the cover page's quiet governing sentence: "Applications submitted after the panel's acceptance date may be held until the next review panel."

A comparative review panel is not a rolling queue. It is a competition among everything that arrived in time. Arriving two weeks late does not cost you two weeks; it costs you a cycle, and your proposal competes next year against work that is a year newer.

The operational instruction, then, is: do not read the Key Facts page and start writing. Read your subprogram's section of Section III first, extract every date and every "required"/"strongly encouraged" pre-application statement, and work backward from the panel.

Review criteria: note which one is fifth

Merit review runs against the criteria codified at 10 C.F.R. § 605.10(d), listed in descending order of importance:

1. Scientific and/or technical merit
2. Appropriateness of the proposed method or approach
3. Competency of personnel and adequacy of resources
4. Reasonableness and appropriateness of the budget
5. Appropriateness of the Data Management and Sharing Plan

Three things to notice. First, there is no broader-impacts criterion — this is not NSF, and effort spent on societal-impact prose is effort not spent on criterion one. Second, criterion two includes "Is the proposed research aligned with the published priorities identified or incorporated by reference in Section III?" The priorities incorporated by reference are where most responsiveness failures originate; follow the links. Third, the DMSP is a scored criterion, with reviewers asked specifically whether the plan enables data to be "publicly shared and preserved in a timely and fair manner that enables validation and replication of results" and whether the chosen repositories are appropriate. In a Gold Standard Science policy environment built around reproducibility, a thin DMSP is no longer a formality.

Renewal applicants get two extra questions — whether the work is an appropriate outgrowth of the current award, and what the team's past performance has been. Renewals and new proposals are judged in the same panels on the same scale.

The strategic read

If you are a university PI in BES or BER: the Open Call is your default, not your fallback. Build the three-page pre-application now, send it to the named program manager for your subprogram, and treat the optional DOE feedback as the actual product — the NOFO explicitly invites you to use the pre-application "to initiate a discussion with the listed program manager about the appropriateness of the proposed research." That conversation is worth more than any revision you make alone.

If you are in HENP: your calendar is the tightest and the most explicit. Early 2027 comparative panels for FY 2027, November 2027 for FY 2028, and at least one topic that only considers applications already submitted to the prior open call. Map your topic before Thanksgiving.

If you are a company: decide first whether your science survives the commercial-activity screen. If it does, raise the instrument question early, because the gap between a part-200 grant and a part-930 OTA is 50 percent of your project cost.

If you are at a national lab: you cannot lead. Get onto a university prime's team, and understand that your scope will be carved out and run through the Field-Work Proposal System rather than the award.

And for everyone: the registration chain is the most common avoidable failure. SAM.gov and a Unique Entity Identifier are prerequisites, PAMS is a separate system with its own help desk, and DOE warns that one-time actions "may take several weeks." A no-deadline NOFO still has a hard dependency on a registration you cannot accelerate.

The Open Call will be open for 364 more days. Your panel will not be.