Clean Energy and Sustainability Grants funding

Clean Energy and Sustainability Grants 2026

Browse open grant programs for clean-energy, sustainability, and green businesses in 2026, sorted by award size, with deadlines and eligibility at a glance.

Forrest Grants

Funding is hiding in plain sight.

Energy-efficiency, solar, EV, and climate-resilience grants for businesses going green.

🐻

Forrest Grant keeps the list clean, relevant, and pointed at programs worth a real application.

Open grants

963

Average award

$35,292

Top eligibility tags

small_businessenergy_efficiencyhomeownernonprofit

Featured grants

High-intent funding opportunities

Grants in Clean

Where to focus first

Browse open grant programs for clean-energy, sustainability, and green businesses in 2026, sorted by award size, with deadlines and eligibility at a glance. Use this page as your shortlist, then jump into the intake wizard so Forrest can narrow the list to the programs you are most likely to win.

FLRolling

Duke Energy Business Energy Efficiency Rebates

Grantor

Duke Energy

Award Amount

$50,000

business_customerenergy_efficiency
View Grant
GARolling

Georgia Power Commercial Energy Efficiency Rebates

Grantor

Georgia Power

Award Amount

$50,000

business_customerenergy_efficiency
View Grant
Dec 31, 2027

NPS Cooperative Ecosystems Studies Units (CESU) Master Cooperative Agreements

Grantor

National Park Service

Award Amount

$50,000

View Grant
VTRolling

Elevate Vermont SBIR/STTR Matching Grant — Clean Energy

Grantor

Vermont Agency of Commerce and Community Development (ACCD)

Award Amount

$50,000

Vermont based businessSBIR or STTR federal award recipient
View Grant
NHRolling

City of Nashua Housing Improvement Programs

Grantor

City of Nashua

Award Amount

$50,000

homeownerlow_moderate_income
View Grant
Sep 30, 2026

Center of Excellence for Alternative Jet Fuels and Environment

Grantor

N/A

Award Amount

$50,000

View Grant
Rolling

Long Term Research in Environmental Biology

Grantor

National Science Foundation

Award Amount

$50,000

View Grant
IARolling

Iowa Renewable Fuels Infrastructure Program

Grantor

State of Iowa

Award Amount

$50,000

renewable_fuelsfuel_retailer
View Grant
FLRolling

FPL Business Energy Efficiency Rebates

Grantor

Florida Power & Light

Award Amount

$50,000

business_customerenergy_efficiency
View Grant
GARolling

Georgia Power Small Business Energy-Saving Upgrades

Grantor

Georgia Power

Award Amount

$50,000

small_businesscommercial_customer
View Grant
SCRolling

SC Energy Office Mini-Grant Program

Grantor

South Carolina Energy Office

Award Amount

$50,000

state agencylocal government
View Grant
CTRolling

Connecticut Green Bank Smart-E Loan

Grantor

Connecticut Green Bank

Award Amount

$50,000

clean_energyenergy_efficiency
View Grant
MTRolling

NeighborWorks Great Falls Owner-Occupied Rehabilitation Assistance

Grantor

NeighborWorks Great Falls

Award Amount

$50,000

homeownerrehabilitation
View Grant
CORolling

Downtown Colorado Springs DDA Energy Efficiency and Conservation Grant

Grantor

Downtown Development Authority of Colorado Springs

Award Amount

$50,000

commercial_propertyenergy_efficiency
View Grant
GARolling

Georgia Green Loans Energy Efficiency Financing

Grantor

Georgia Green Loans

Award Amount

$50,000

clean_energyenergy_efficiency
View Grant
OHRolling

JobsOhio Small Business Grant - Energy Sector

Grantor

JobsOhio

Award Amount

$50,000

for profit1+ years in operation
View Grant
GARolling

Invest Atlanta and Georgia Green Loans Energy Efficiency Financing

Grantor

Georgia clean energy finance partners

Award Amount

$50,000

clean_energyenergy_efficiency
View Grant
Sep 30, 2026

Advanced Nuclear Energy Licensing Cost-Share Grant Program

Grantor

N/A

Award Amount

$50,000

View Grant
MSRolling

Mississippi Industrial Energy Efficiency Program (MIEEP) Grant

Grantor

Mississippi Development Authority

Award Amount

$50,000

Mississippi basedfor profit
View Grant
MARolling

Massachusetts Climate Smart Agriculture Program (Green Component)

Grantor

Massachusetts Department of Agricultural Resources (MDAR)

Award Amount

$50,000

massachusetts basedagricultural operation
View Grant
Rolling

Engineering Environmental Resiliency (EER)

Grantor

N/A

Award Amount

$50,000

View Grant
AZRolling

Tempe Water Conservation Commercial Landscape Conversion Rebate

Grantor

City of Tempe

Award Amount

$50,000

businessproperty_owner
View Grant
NERolling

City of Lincoln Housing Rehabilitation Loan Program

Grantor

City of Lincoln

Award Amount

$50,000

homeownerlow_moderate_income
View Grant
Dec 17, 2026

The Genesis Mission: Transforming Science and Energy with AI

Grantor

Grantor name if different from agency

Award Amount

$50,000

View Grant
Rolling

Environmental Engineering

Grantor

Environmental Research Fund

Award Amount

$50,000

View Grant
MTRolling

Great Falls Residential Rehabilitation Loan Program

Grantor

City of Great Falls

Award Amount

$50,000

homeownerlow_moderate_income
View Grant
Oct 31, 2026

RESTORE Act Centers of Excellence Research Grants Program

Grantor

NOAA

Award Amount

$50,000

View Grant
INRolling

Bloomington Solar, Energy Efficiency, and Lighting Program

Grantor

City of Bloomington

Award Amount

$45,000

small_businessnonprofit
View Grant
ARRolling

ADEQ Environmental Assistance Loan – Pollution Prevention

Grantor

Arkansas Department of Environmental Quality (ADEQ)

Award Amount

$45,000

Arkansas businesssmall business
View Grant
MTRolling

Alternative Energy Revolving Loan Program (AERLP)

Grantor

Montana Department of Environmental Quality – Montana Energy Office

Award Amount

$40,000

Montana basedsmall business
View Grant
MTRolling

Montana Alternative Energy Revolving Loan Program

Grantor

Montana Department of Environmental Quality

Award Amount

$40,000

clean_energyenergy_efficiency
View Grant
WVRolling

West Virginia Energy Efficiency and Conservation Block Grant (EECBG) — Local Government Sub-Grants

Grantor

West Virginia Office of Energy

Award Amount

$37,000

West Virginia local governmentenergy efficiency
View Grant
MNRolling

Launch Minnesota Innovation Grant — Clean Energy Tech Startups

Grantor

Minnesota Department of Employment and Economic Development (DEED)

Award Amount

$35,000

technology startupclean energy technology
View Grant
NJRolling

Northeast SARE Farmer Grant

Grantor

USDA Northeast SARE / Rutgers Cooperative Extension

Award Amount

$30,000

small_business
View Grant
CARolling

LADWP Community Partnership Outreach Grants

Grantor

Los Angeles Department of Water and Power

Award Amount

$30,000

nonprofitcommunity_organization
View Grant
IDRolling

Idaho Governor's Office of Energy State Energy Loan Program

Grantor

Idaho Governor's Office of Energy and Mineral Resources

Award Amount

$30,000

Idaho basedhomeowner
View Grant
NJRolling

Clean Tech R&D Voucher Program

Grantor

NJEDA / CSIT

Award Amount

$25,000

early stage company
View Grant
VTRolling

Efficiency Vermont Business Custom Incentive Program

Grantor

Efficiency Vermont (VEIC)

Award Amount

$25,000

Vermont businessnonprofit
View Grant
WYRolling

State Energy Program Small Business Energy Audit and Retrofit Grant

Grantor

U.S. Department of Energy and State of Wyoming

Award Amount

$25,000

small_businessenergy_efficiency
View Grant
WVRolling

West Virginia Energy Efficiency and Conservation Block Grant (EECBG) — Nonprofit Sub-Grants

Grantor

West Virginia Office of Energy

Award Amount

$25,000

West Virginia nonprofitrural
View Grant
NDRolling

Operation Intern

Grantor

State of North Dakota

Award Amount

$25,000

employerinternship
View Grant
MIRolling

East Lansing Home Rehabilitation Program

Grantor

City of East Lansing

Award Amount

$24,999

homeownerlow_income_household
View Grant
CARolling

Pasadena Water and Power Business Rebate Program

Grantor

Pasadena Water and Power

Award Amount

$24,000

small_businesscommercial_customer
View Grant
NMRolling

New Mexico Small Business Assistance Program

Grantor

State of New Mexico

Award Amount

$20,000

small_businesstechnical_assistance
View Grant
IDRolling

Idaho Residential Alternative Energy Tax Deduction

Grantor

Idaho State Tax Commission

Award Amount

$20,000

Idaho residenthomeowner
View Grant
MORolling

Independence Power & Light Commercial Rebates

Grantor

City of Independence, Missouri

Award Amount

$20,000

businesscommercial_utility_customer
View Grant
MNRolling

Minneapolis Green Cost Share Energy Efficiency Grants

Grantor

City of Minneapolis, Minnesota

Award Amount

$20,000

businesssmall_business
View Grant
RIRolling

Small Business Energy Efficiency Grant Program

Grantor

Rhode Island Commerce

Award Amount

$20,000

rhode_islandsmall_business
View Grant
CARolling

EBMUD WaterSmart Landscapes Rebate

Grantor

East Bay Municipal Utility District

Award Amount

$20,000

businessproperty_owner
View Grant
UTRolling

Park City Chamber Sustainable Tourism Grant

Grantor

Park City Chamber and Visitors Bureau

Award Amount

$20,000

small_businesstourism_business
View Grant
CARolling

City of Fresno Energy Efficiency Grant Program

Grantor

City of Fresno

Award Amount

$15,000

small_businessrestaurant
View Grant
MARolling

MOR-EV Medium and Heavy-Duty Commercial Vehicle Rebate Program

Grantor

Massachusetts Department of Energy Resources (DOER)

Award Amount

$15,000

massachusetts based fleetcommercial vehicle operator
View Grant
MARolling

MOR-EV Medium and Heavy-Duty Vehicle Rebate Program

Grantor

Massachusetts Department of Energy Resources (DOER)

Award Amount

$15,000

massachusetts based fleetcommercial vehicle operator
View Grant
RIRolling

Renewable Energy Fund (REF) - Small Scale (Residential) Solar Grants

Grantor

Rhode Island Commerce Corporation

Award Amount

$14,500

homeownerRhode Island
View Grant
ARRolling

Jonesboro Homeowner Rehabilitation Assistance

Grantor

U.S. Department of Housing and Urban Development

Award Amount

$12,000

homeownerresident
View Grant
RIRolling

Rhode Island Small Business Energy Efficiency Grant Program

Grantor

Rhode Island Commerce

Award Amount

$10,000

small_businessproperty_owner
View Grant
IARolling

Iowa City Climate Action Grants

Grantor

City of Iowa City

Award Amount

$10,000

nonprofitbusiness
View Grant
NYRolling

NYC Brownfield Incentive Grant (BIG) - Pre-Development Design

Grantor

Grantor not listed

Award Amount

$10,000

direct to businesssmall_business
View Grant
CORolling

Certifiably Green Denver Equity Funding

Grantor

City and County of Denver

Award Amount

$10,000

small_businesssustainability
View Grant
ILRolling

ComEd Green Region Program

Grantor

ComEd

Award Amount

$10,000

nonprofitlocal_government
View Grant

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