| F&F Filipowski Spółka Komandytowa | Pabianice, Łódź Voivodeship | Visit site |
| FACE | Veigy-Foncenex, Haute-Savoie | Visit site |
| FARMO Systems, Autonomous Solutions | Istanbul, Istanbul | Visit site |
| FARO Value | Milano, Milan | Visit site |
| FC TecNrgy | Gurugram, Haryana | Visit site |
| FCC Environment | Hertford, England | Visit site |
| FGRID | Athina, Attica | Visit site |
| FICHTNER Water & Transportation | Stuttgart, Baden-Württemberg | Visit site |
| FIEEC | Paris, Île-de-France | Visit site |
| FIEGE | Greven, North Rhine-Westphalia | Visit site |
| FINERGREEN | Paris, Île-de-France | Visit site |
| FIRMAN Power Solution | Nanjing Shi, Jiangsu | Visit site |
| FIRN energy | Menen, West Flanders | Visit site |
| FLEXRACK | Highland Hills, Ohio | Visit site |
| FLOW Project | Matosinhos, Porto | Visit site |
| FMC | Newcastle upon Tyne, England | Visit site |
| FODS | Englewood, Colorado | Visit site |
| FORTE Vannkraft | Oslo, Oslo | Visit site |
| FORTIS Alliance | Houston, Texas | Visit site |
| FOX Roofing | Dallas, Texas | Visit site |
| FP Investment-Partners GmbH | Frankfurt am Main, Hesse | Visit site |
| FPR New Energy | Shenzhen Shi, Guangdong | Visit site |
| FREE INGEGNERIA | Narni, Terni | Visit site |
| FRI-EL GEO S.r.l. | Bolzano, South Tyrol | Visit site |
| FRISSBE | Ljubljana, Ljubljana | Visit site |
| FS Fueling Sustainability | Lucas do Rio Verde, Mato Grosso | Visit site |
| FTI | Menasha, Wisconsin | Visit site |
| FURUKAWA ELECTRIC GROUP | 東京都, Tokyo Prefecture | Visit site |
| FUTURi Power | Vancouver, British Columbia | Visit site |
| FabTech Solar Solutions | Gilbert, Arizona | Visit site |
| Faber Infrastructure GmbH | Saarbrücken, Saarland | Visit site |
| Fabmatics GmbH | Dresden, Saxony | Visit site |
| Fabrication Services Incorporated | Greenwell Springs, Louisiana | Visit site |
| Facility Solutions Group | Austin, Texas | Visit site |
| Fagen Inc. | Granite Falls, Minnesota | Visit site |
| Fairfield Maroc | Casablanca, Casablanca-Settat | Visit site |
| Fairland Group | Guangzhou Shi, Guangdong | Visit site |
| Fairland iGarden s.r.o. | Praha, Prague | Visit site |
| Family Custom Designs LLC | REDLANDS, CA | Visit site |
| Fanilo Solar Madagascar | Antananarivo, Analamanga | Visit site |
| Fantastic Energy Saving Equipment Co.,ltd--HEAT PUMP | Guangzhou Shi, Guangdong | Visit site |
| Far North Solar Farm | Auckland, Auckland | Visit site |
| Farra Marine Limited | Dublin, County Dublin | Visit site |
| Fastensol | Xiamen Shi, Fujian | Visit site |
| Fastmarkets | London, England | Visit site |
| Federal Pacific | Bristol, Virginia | Visit site |
| FelicityESS | Guangzhou Shi, Guangdong | Visit site |
| Fenan Aluminum | Fujian | Visit site |
| Fernhay Solutions | London, England | Visit site |
| FersiSolar S.L. | Madrid, Madrid | Visit site |
| Fiba Group | Beşiktaş, Istanbul | Visit site |
| Fibox Enclosures | Glen Burnie, Maryland | Visit site |
| Fibron Cable | Hoddesdon, England | Visit site |
| Fieldman Control System | Ahmedabad, Gujarat | Visit site |
| Fifth Wall | New York, New York | Visit site |
| Figure | New York, New York | Visit site |
| Fike Corporation | Blue Springs, Missouri | Visit site |
| Findorff | Madison, Wisconsin | Visit site |
| Finelcomp | Outokumpu, North Karelia | Visit site |
| Finite Carbon | Wayne, Pennsylvania | Visit site |
| Finn Biogas | Brisbane, Queensland | Visit site |
| Finnfund | Helsinki, Uusimaa | Visit site |
| Finsolar | Mexico City, Mexico City | Visit site |
| Finturf | Glendale, California | Visit site |
| Finulent Solutions | Mumbai, Maharashtra | Visit site |
| Fire & Risk Alliance, LLC | Washington, District of Columbia | Visit site |
| Firetrace International, a Halma Company | Scottsdale, Arizona | Visit site |
| Firm Magnetic Electronic Co. Ltd | Shanghai, Shanghai | Visit site |
| Firmengruppe Max Bögl | Sengenthal, Bavaria | Visit site |
| First America | Morris, Illinois | Visit site |
| First Climate | Bad Vilbel, Hesse | Visit site |
| First Electric | Mesa, Arizona | Visit site |
| First Philec | Tanauan City, Batangas | Visit site |
| First Public H2 | Lancaster, California | Visit site |
| FirstEnergy | Akron, Ohio | Visit site |
| Firstgas | New Plymouth, Taranaki | Visit site |
| Fisher Tank Company | Chester, Pennsylvania | Visit site |
| Fisk Electric Co. | Houston, Texas | Visit site |
| Fitch Electric, Inc. | Pleasanton, California | Visit site |
| Five Star Metals Inc | Houston, Texas | Visit site |
| Fivepower New Energy | Shenzhen Shi, Guangdong | Visit site |
| FixSun Solar Finland Oy | Paimio, Southwest Finland | Visit site |
| Fixus Solar Energy System Solutions | Sincan, Ankara | Visit site |
| Fiùtur | New York, New York | Visit site |
| Flat6Labs | Giza, Giza | Visit site |
| Flex Solar | Carlsbad, California | Visit site |
| FlexConnect Energy Inc. | Calgary, Alberta | Visit site |
| FlexEnergy Solutions | Centennial, Colorado | Visit site |
| FlexGen | Durham, North Carolina | Visit site |
| Flexvolt Engenharia e Energia Solar | Americana, São Paulo | Visit site |
| Flick Power | Seal Beach, California | Visit site |
| Flipped Energy | Sydney, New South Wales | Visit site |
| FloSource | Mooresville, Indiana | Visit site |
| FloatSola | Xiamen Shi, Fujian | Visit site |
| Floene | Odivelas, Lisbon | Visit site |
| Florida PACE Funding Agency | Lakewood Ranch, Florida | Visit site |
| Florida Power & Light | Juno Beach, Florida | Visit site |
| Florida Solar Design Group | Fort Myers, Florida | Visit site |
| Florida Solar Energy Industries Association (FLASEIA) | Myakka City, Florida | Visit site |
| Flow Aluminum | Albuquerque, New Mexico | Visit site |
| Flow Power | Melbourne, Victoria | Visit site |
| Flow Transmitter & Flow Switch | Puchong, Selangor | Visit site |
| FlowGen Technology | Zug, Zug | Visit site |
| Flowergy | Riemst, Limburg | Visit site |
| Flowwy | Kruibeke, East Flanders | Visit site |
| Fluence | Fairfax, Vermont | Visit site |
| Fluid Quip Technologies, LLC | Cedar Rapids, Iowa | Visit site |
| Fluke Corporation | Everett, Washington | Visit site |
| Fluvius | Melle, East Flanders | Visit site |
| Flux Solar | Addison, Texas | Visit site |
| Fly Solar | Suzhou Shi, Jiangsu | Visit site |
| Flyfine Energy | Yosemite National Park, California | Visit site |
| Focusmain Intelligent Technology (Jiangsu) Co., Ltd. | Changzhou City, Jiangsu | Visit site |
| Foliflex Cables | New Delhi, Delhi | Visit site |
| Fonds Stratégique de Participations | Paris, Texas | Visit site |
| Fonrich New Energy | Shanghai, Shanghai | Visit site |
| Fonroche Lighting FR | Sainte-Colombe-en-Bruilhois, Lot-et-Garonne | Visit site |
| Fordje | Newark, Delaware | Visit site |
| ForeFront Power | San Francisco, California | Visit site |
| Foreseeson Technology | Richmond, British Columbia | Visit site |
| Forge Nano, Inc. | Thornton, Colorado | Visit site |
| Forme Solar | Irvine, California | Visit site |
| Forsspac - Putting Life Into Your Building! | Manila, Manila | Visit site |
| FortiFi | San Diego, California | Visit site |
| FortisAlberta | Calgary, Alberta | Visit site |
| Fortlev Solar | Serra, Espírito Santo | Visit site |
| Fortune Electric | Taoyuan | Visit site |
| Fortune Energy | Simi Valley, California | Visit site |
| Forvis Mazars US | New York City, New York | Visit site |
| Fox Energy | Ahmedabad, Gujarat | Visit site |
| Fox Solutions Pvt.Ltd | Nashik, Maharashtra | Visit site |
| Foxlink | 樹林區, New Taipei City | Visit site |
| Fracsun Inc. | San Luis Obispo, California | Visit site |
| Fractal EMS | Austin, Texas | Visit site |
| Fractal Energy Storage Consultants | Austin, Texas | Visit site |
| Framatome AG | Baden, Aargau | Visit site |
| France Biogaz | Strasbourg, Bas-Rhin | Visit site |
| France Chaleur Urbaine | Paris, Texas | Visit site |
| France Hydro Électricité | Paris, Île-de-France | Visit site |
| Franklin Energy | Port Washington, Wisconsin | Visit site |
| FranklinWH Energy Storage Inc. | San Jose, California | Visit site |
| Fraser Energy Projects | Glasgow, Scotland | Visit site |
| Fraunhofer IIS | Erlangen, Bavaria | Visit site |
| Fraunhofer IPA | Stuttgart, Baden-Württemberg | Visit site |
| Fraunhofer Institute for Industrial Engineering IAO | Stuttgart, Baden-Württemberg | Visit site |
| Fraunhofer Karriere | München, Bavaria | Visit site |
| Fraunhofer UMSICHT | Oberhausen, North Rhine-Westphalia | Visit site |
| Fraunhofer-Gesellschaft | München, Bavaria | Visit site |
| Fred. Olsen 1848 | Oslo, Oslo | Visit site |
| Free Electrons Program | Palo Alto, California | Visit site |