IDRolling
Idaho Energy Loan Program
Grantor
State of Idaho
Award Amount
$100,000
energy_efficiencyrenewable_energy
View GrantClean 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.
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Forrest Grant keeps the list clean, relevant, and pointed at programs worth a real application.
Open grants
963
Average award
$79,375
Top eligibility tags
energy_efficiencysmall_businessproperty_ownerutility_customer
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.
HIRolling
Hawaii Technology Development Corporation Manufacturing Assistance Grant
Grantor
State of Hawaii
Award Amount
$100,000
manufacturerreimbursement
View GrantCARolling
Fullerton Commercial Turf Replacement Rebate
Grantor
Metropolitan Water District of Southern California
Award Amount
$100,000
small_businesscommercial_customer
View GrantLARolling
Louisiana Innovation Retention Grant — Clean Energy Startups
Grantor
Louisiana Economic Development (LED)
Award Amount
$100,000
SBIR recipientSTTR recipient
View GrantTXRolling
Austin Water Bucks for Business Rebate
Grantor
Austin Water
Award Amount
$100,000
commercial_customersmall_business
View GrantHIRolling
Manufacturing Assistance Program (MAP) Grant — Energy Efficiency
Grantor
Hawaii Technology Development Corporation (HTDC)
Award Amount
$100,000
Hawaii based businessmanufacturer
View GrantIDRolling
Idaho Power Commercial and Industrial Energy Efficiency Incentives
Grantor
Idaho Power
Award Amount
$100,000
business_customerenergy_efficiency
View GrantCTRolling
Energize CT NEIF Commercial Efficiency Financing
Grantor
Eversource, Avangrid, and Energize Connecticut
Award Amount
$100,000
utility_customerenergy_efficiency
View GrantRolling
USDA Energy Audit and Renewable Energy Development Assistance Grants
Grantor
U.S. Department of Agriculture
Award Amount
$100,000
nonprofitlocal_government
View GrantAZRolling
Tucson Water Commercial Turf Removal Rebate
Grantor
City of Tucson
Award Amount
$100,000
businessproperty_owner
View GrantCARolling
Valley Water Landscape Rebate Program
Grantor
Santa Clara Valley Water District
Award Amount
$100,000
businessproperty_owner
View GrantTXRolling
Dallas Industrial Commercial Institutional Water Efficiency Rebate
Grantor
City of Dallas
Award Amount
$100,000
commercial_customerproperty_owner
View GrantCTRolling
Energize CT Small Business Energy Advantage
Grantor
Eversource, United Illuminating, and Energize Connecticut
Award Amount
$100,000
small_businessutility_customer
View GrantGARolling
Atlanta Brownfield Revolving Loan Fund (BRLF)
Grantor
Invest Atlanta
Award Amount
$100,000
small_business
View GrantCARolling
Oceanside Greenhouse Gas Reduction Grant Program
Grantor
Preserve Calavera and San Diego Foundation
Award Amount
$100,000
small_businessnonprofit
View GrantFLRolling
Florida Incumbent Worker Training (IWT) Grant — Green Jobs
Grantor
CareerSource Florida
Award Amount
$100,000
for profitFlorida business
View GrantCORolling
Green Colorado Credit Reserve
Grantor
Colorado Energy Office
Award Amount
$100,000
clean_energyenergy_efficiency
View GrantDERolling
Energize Delaware Farm Program Rebates
Grantor
Delaware Sustainable Energy Utility
Award Amount
$100,000
agriculturefarm
View GrantMERolling
Efficiency Maine Commercial and Industrial Incentives - Bangor
Grantor
Efficiency Maine Trust
Award Amount
$100,000
business_customerenergy_efficiency
View GrantDERolling
EDGE Grant – STEM Class (Clean Energy and Environmental Tech)
Grantor
Delaware Division of Small Business
Award Amount
$100,000
for profitsmall business
View GrantMTRolling
NorthWestern Energy Commercial Efficiency Rebates - Billings
Grantor
NorthWestern Energy
Award Amount
$100,000
business_customerenergy_efficiency
View GrantNJRolling
Clean Construction Program
Grantor
NJDEP
Award Amount
$100,000
construction contractorequipment owner
View GrantORRolling
Oregon SBIR/STTR Matching Grant Program — Clean Energy and Sustainability
Grantor
Business Oregon
Award Amount
$100,000
for profitOregon based
View GrantCTRolling
United Illuminating Small Business Energy Advantage
Grantor
United Illuminating and Energize Connecticut
Award Amount
$100,000
small_businessutility_customer
View GrantLARolling
Entergy New Orleans Energy Smart Business Incentives
Grantor
Entergy New Orleans
Award Amount
$100,000
business_customerenergy_efficiency
View GrantCARolling
Valley Water Water Efficient Technology Rebate
Grantor
Santa Clara Valley Water District
Award Amount
$100,000
businessmanufacturer
View GrantMERolling
Efficiency Maine Commercial and Industrial Incentives - Lewiston
Grantor
Efficiency Maine Trust
Award Amount
$100,000
business_customerenergy_efficiency
View GrantCARolling
Riverside Public Utilities Commercial Lighting Incentives
Grantor
Riverside Public Utilities
Award Amount
$100,000
small_businesscommercial_customer
View GrantWARolling
Washington EV Charging Station (EVSE) Grant Program
Grantor
Washington State Department of Commerce
Award Amount
$85,000
Washington stateEV charging
View GrantCARolling
Pasadena Water and Power Solar and Battery Rebate Pilot Program
Grantor
Pasadena Water and Power
Award Amount
$80,000
small_businesscommercial_customer
View GrantRIRolling
Rhode Island Renewable Energy Fund Commercial Scale Grants
Grantor
Rhode Island Commerce
Award Amount
$75,000
rhode_islandrenewable_energy
View GrantNJRolling
CSIT Clean Tech Research and Development Seed Grant
Grantor
New Jersey Commission on Science, Innovation and Technology
Award Amount
$75,000
startupclean_tech
View GrantRolling
Native American Business Development Institute Grants
Grantor
U.S. Department of the Interior
Award Amount
$75,000
tribal_governmentnative_owned
View GrantSCRolling
SC Energy Efficiency and Conservation Block Grant (SC EECBG) Competitive Program
Grantor
South Carolina Energy Office / US Department of Energy
Award Amount
$75,000
local governmentmunicipality
View GrantMARolling
MassCEC Catalyst Program
Grantor
Massachusetts Clean Energy Center
Award Amount
$75,000
startupresearch
View GrantNCRolling
NC DEQ Recycling Business Development Grant
Grantor
NC DEQ Division of Environmental Assistance and Customer Service
Award Amount
$75,000
NC businessrecycling business
View GrantMDRolling
Rockville Outreach and Restoration Grant
Grantor
City of Rockville
Award Amount
$75,000
nonprofitstormwater
View GrantRIRolling
Renewable Energy Fund (REF) - Commercial Scale Solar Grants
Grantor
Rhode Island Commerce Corporation
Award Amount
$75,000
commercial property ownerRhode Island
View GrantMARolling
MassCEC Catalyst and DICES Grants
Grantor
Massachusetts Clean Energy Center
Award Amount
$75,000
startupclean_energy
View GrantRIRolling
Innovation Voucher Program - Energy and Environment Focus
Grantor
Rhode Island Commerce Corporation
Award Amount
$75,000
small businessRhode Island business
View GrantCORolling
Denver Heat Pump Rebates for Existing Commercial Buildings
Grantor
City and County of Denver
Award Amount
$75,000
commercial_customerproperty_owner
View GrantNMRolling
New Mexico Angel Investment Tax Credit – Clean Energy R&D
Grantor
New Mexico Taxation and Revenue Department
Award Amount
$62,500
high technology businessqualified research
View GrantWARolling
Port of Seattle Economic Development Partnership Program
Grantor
Port of Seattle
Award Amount
$60,000
any
View GrantHIRolling
Hawaii Energy Business Rebates
Grantor
Hawaii Energy
Award Amount
$50,000
business_customerenergy_efficiency
View GrantFLRolling
Solar and Energy Loan Fund Florida Business Financing
Grantor
Solar and Energy Loan Fund
Award Amount
$50,000
clean_energyenergy_efficiency
View GrantNMRolling
New Mexico Science & Technology Business Startup Grant – Clean Energy
Grantor
New Mexico Economic Development Department – Office of Science & Technology
Award Amount
$50,000
startupsmall business
View GrantMARolling
Boston Community Clean Air Grant
Grantor
City of Boston
Award Amount
$50,000
nonprofitenvironmental
View GrantIARolling
Iowa City Climate Innovation Grants
Grantor
City of Iowa City
Award Amount
$50,000
businessnonprofit
View GrantSep 29, 2029
SEEDING CRITICAL ADVANCES FOR LEADING ENERGY TECHNOLOGIES WITH UNTAPPED POTENTIAL (SCALEUP) READY
Grantor
Grantor name if different from agency
Award Amount
$50,000
startupsmall_business
View GrantJan 8, 2027
DoW’s Energy, Installations, and Environment Innovation Partners Programs
Grantor
DoW
Award Amount
$50,000
Rolling
Environmental Sustainability
Grantor
EPA Grants Division
Award Amount
$50,000
nonprofitsmall_business
View GrantNERolling
City of Bellevue CDBG Housing Rehabilitation Assistance
Grantor
U.S. Department of Housing and Urban Development
Award Amount
$50,000
homeownerlow_moderate_income
View GrantAKRolling
Alaska Alternative Energy Conservation Loan
Grantor
State of Alaska
Award Amount
$50,000
small_businesscommercial_property
View GrantCARolling
Sacramento Commercial Turf Conversion Rebates
Grantor
City of Sacramento and regional water providers
Award Amount
$50,000
businessproperty_owner
View GrantAZRolling
Scottsdale Water Commercial Grass Removal Rebate
Grantor
City of Scottsdale
Award Amount
$50,000
businessproperty_owner
View GrantRolling
Renewable Energy Systems and Energy Efficiency Improvements Program
Grantor
Energy Efficiency and Renewable Energy Office
Award Amount
$50,000
HIRolling
Hawaii SBIR Matching Grant
Grantor
State of Hawaii
Award Amount
$50,000
sbirtechnology
View GrantFLRolling
Tampa Electric Business Energy Rebates
Grantor
Tampa Electric
Award Amount
$50,000
business_customerenergy_efficiency
View GrantSep 7, 2027
FAA Aviation Research Grants Program
Grantor
Federal Aviation Administration
Award Amount
$50,000
nonprofitstartup
View GrantRolling
Energy, Power, Control, and Networks
Grantor
Energy Research Agency
Award Amount
$50,000
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