Browse grants
Federal and state grant opportunities with plain-English eligibility summaries. We aggregate public records — always verify the details on the funder’s site before applying. Or browse the complete index →
Renewable Energy Systems and Energy Efficiency Improvements Program
No deadline listedRural Business-Cooperative Service · $1.5K–$500K
USDA's Rural Business-Cooperative Service Renewable Energy Systems and Energy Efficiency Improvements Program (REAP) funds agricultural producers for renewable energy and efficiency projects, with awards ranging from about $1,500 to $500,000. Eligibility is limited to agricultural producers rather than nonprofits or businesses generally, and applicants should contact their State Energy Coordinator for full application requirements.
Small businessLarge awardNarrow eligibilityPON-24-002 – K–12 Energy Efficiency Program (KTEP)
UnofficialNo deadline listedCA Energy Commission · Amount varies
Limited to public agencies such as school districts, this program uses federal infrastructure law (IIJA/Bipartisan Infrastructure Law) funds to provide loans and grants through a revolving loan fund for K-12 energy efficiency upgrades and retrofits. It is not open to nonprofits, businesses, or individuals, and funding is contingent on U.S. Department of Energy funds actually flowing through, so terms may change. No specific award amount or deadline is listed.
Government / tribalNarrow eligibilityGreenhouse Gas Reduction Loan Program
UnofficialNo deadline listedDepartment of Resources Recycling and Recovery · Amount varies
Open to businesses, nonprofits, and public agencies in California, this program funds loans (not grants) to reduce greenhouse gas emissions, particularly landfill methane and upstream manufacturing emissions, with priority benefits for disadvantaged communities. No specific award amount or deadline is listed. Applicants should note this is a loan program, requiring repayment, rather than a non-repayable grant.
NonprofitsSmall businessGovernment / tribalNarrow eligibilityCost Share for Federal Funding Opportunities Industrial Decarbonization and Improvement of Grid Operations (INDIGO) Program and Food Production Investment Program (FPIP)
UnofficialNo deadline listedCA Energy Commission · $500K–$5M
Open only to public agencies and tribal governments in California -- nonprofits and private businesses are not eligible under the stated criteria. Provides cost-share funding paired with two federal programs (INDIGO and FPIP) supporting industrial decarbonization, grid reliability, and greenhouse gas reduction at industrial and food production facilities; awards range from $500,000 to $5 million. This is a large-award but narrowly targeted program tied to specific federal solicitations.
Government / tribalLarge awardCost-share requiredNarrow eligibilityCost Share for Federal Funding Opportunities Clean Hydrogen Program
UnofficialNo deadline listedCA Energy Commission · Amount varies
Provides state cost-share funding to California businesses, individuals, and public agencies that are applying for a federal DOE clean hydrogen funding opportunity — it is only available alongside an active or pending federal award, not as a standalone grant. Applicants who already received federal funding and want retroactive cost-share are not eligible. No specific award amount or deadline is listed.
Small businessGovernment / tribalCost-share requiredNarrow eligibilityRFI - DOE Infrastructure Work Scope Development
No deadline listedIdaho Field Office · Amount varies
This is a Request for Information from the DOE Idaho Field Office, not a funding opportunity; it asks nonprofits (with or without 501(c)(3) status), higher education institutions, state governments, and small businesses to submit comments on nuclear energy research priorities via NEUP.gov. No funding is attached (amount shown as $0), so responding does not itself lead to an award. Eligible respondent types are broad, but this is input-gathering only, not a grant.
NonprofitsSmall businessSchools & universitiesGovernment / tribal+1 moreCalifornia Pollution Control Financing Authority (CPCFA) Exempt Facility Bond Financing Program
UnofficialNo deadline listedState Treasurer's Office · $1.5M–$550M
A tax-exempt bond financing program (not a grant) for California businesses of any size involved in pollution control, waste disposal, recycling, composting, or resource recovery facilities; smaller businesses (500 employees or fewer) may also qualify under separate federal size standards. Financed amounts range from about $1.5 million to $550 million, with strict rules on how bond proceeds may be used (e.g., at least 95% must go to the defined project). Final eligibility depends on review by bond counsel and tax counsel.
Small businessLarge awardNarrow eligibility