To submit an application for Office of Energy Efficiency and Renewable Energy (EERE) Small Business Innovation Research (SBIR)/Small Business Technology Transfer (STTR) grant you will need to provide a Letter of Intent (LOI) prior to submitting your full application. 

Submit a Letter of Intent

The U.S. Department of Energy (DOE) requires an LOI before submitting a full application. Only those applicants who submit an LOI by the due date listed in the funding opportunity announcement (FOA) will be eligible to submit a full application. DOE program managers use LOIs to determine the number of independent scientific and engineering experts that may be required to conduct the application review process. Feedback will only be provided on your LOI if your proposed R&D does not appear to align with the selected topic’s subtopic.

Once topics are published in the FOA, and even after submitting an LOI, you are encouraged to ask the identified DOE topic manager(s) questions. You can ask questions about the published topics up to the day you submit your full application(s).

Get more information on LOI requirements and see a sample LOI.

Submit a Full Application

As noted in Step 1 – Complete Required Registrations, applicants are required to register with Applicants are required to complete a application package to apply for a given funding opportunity. Full applications must be submitted using the forms provided by

Get more information on—and instructions for—preparing and submitting your SBIR/STTR application.

Once applications have been submitted, they undergo several reviews as part of the selection process

If you are applying for an SBIR grant for the first time, especially if you are a minority-owned or women-owned small business, or a small business from an under-represented state, you may be able to receive assistance with completing your Phase I application through DOE’s Phase 0 assistance program. Learn more. 

In addition, the DOE SBIR/STTR Phase I Proposal Prep site is also available to help teach small businesses how to prepare a proposal in response to the DOE Funding Opportunity Announcement (FOA). Learn more. 

Frequently Asked Questions on DOE’s SBIR/STTR Program.