| BFP Service | Madrid, Spain | Visit site |
| BFW Energia | São Paulo, Brazil | Visit site |
| BG&E | Sydney, Australia | Visit site |
| BGC | Vancouver, Canada | Visit site |
| BGF | London, United Kingdom | Visit site |
| BGS | London, United Kingdom | Visit site |
| BHB SOLAR ENERJİ DANIŞMANLIK ANONİM ŞİRKETİ | Erenler, Türkiye | Visit site |
| BHB SOLAR ENERJİ DANIŞMANLIK ANONİM ŞİRKETİ | Adapazarı, Türkiye | Visit site |
| BHT Deutschland GmbH | Schriesheim, Germany | · |
| BICODI | Shenzhen Shi, China | · |
| BIGSOLAR Photovoltaic Systems | Aspropyrgos, Greece | Visit site |
| BIGSOLAR Photovoltaic Systems | Greece | Visit site |
| BIOGAS ENGINEERING SRL | Noventa Vicentina, Italy | Visit site |
| BIOGAZ TECH | Ploërmel, France | Visit site |
| BIOGEST | Vienna, Austria | Visit site |
| BIOP Green Gas | Vienna, Austria | Visit site |
| BIOVEA Energie | Abidjan, Côte d'Ivoire | Visit site |
| BIPVco | Newport, United Kingdom | Visit site |
| BISOL Group | Prebold, Slovenia | Visit site |
| BISON BROTHERS | 東京都, Japan | Visit site |
| BISTON CONSTRUCTION COMPANY | Parauapebas, Brazil | Visit site |
| BK Energies - Energy Storage | Oviedo, Spain | Visit site |
| BK Energies - Energy Storage | Llanera, Spain | Visit site |
| BK Energies - Energy Storage | Madrid, Spain | Visit site |
| BKW Energy | Bern, Switzerland | Visit site |
| BKW Italia S.p.A. | Milano, Italy | Visit site |
| BKW Italia S.p.A. | Italy | Visit site |
| BLEnergy | Tel Aviv-Yafo, Israel | Visit site |
| BLISON CO. LIMITED | Kampala, Uganda | Visit site |
| BLISON CO. LIMITED | Bweyogerere, Uganda | Visit site |
| BLK projects | PV-systemen en Batterij-systemen | Lijnden, Netherlands | Visit site |
| BLKCSOLAR | China | Visit site |
| BLOCH3 | Krumbach, Austria | Visit site |
| BLOXS GmbH | Grünwald, Germany | Visit site |
| BM Energia | Fortaleza, Brazil | · |
| BMD Group | Brisbane, Australia | Visit site |
| BMG Solar Distribution & Wholesale | München, Germany | Visit site |
| BMI Group | Tillsonburg, Canada | Visit site |
| BMS HEAVY CRANES | Nørresundby, Denmark | Visit site |
| BMSer | Hangzhou Shi, China | Visit site |
| BMZ | Karlstein am Main, Germany | Visit site |
| BNP Paribas Asset Management | France | Visit site |
| BNP Paribas CIB | Paris, France | Visit site |
| BODE Unternehmensgruppe | Münster, Germany | Visit site |
| BOOM POWER | Arundel, United Kingdom | Visit site |
| BOREA CONSTRUCTION | Lévis, Canada | Visit site |
| BOREAS FRANCE | Boulay-Moselle, France | Visit site |
| BOS Balance of Storage Systems AG | Ulm, Germany | · |
| BOS Power | Laksevåg, Norway | Visit site |
| BOSLAN Ingeniería y Consultoría | Bilbao, Spain | Visit site |
| BPA | Montréal, Canada | · |
| BPCL Renewable Energy | Mumbai, India | Visit site |
| BRANDHOFF OBERMÜLLER PARTNER | Frankfurt am Main, Germany | Visit site |
| BRAUN EDL / experts4mobility | Mühlhausen, Germany | Visit site |
| BREMER AG | Paderborn, Germany | Visit site |
| BRIGHT | diadikasia | Chalandri, Greece | Visit site |
| BROSETA | Madrid, Spain | Visit site |
| BROSETA | València, Spain | Visit site |
| BROSETA | Barcelona, Spain | Visit site |
| BROSETA | Amadora, Portugal | Visit site |
| BROSETA | Zürich, Switzerland | Visit site |
| BRUC | Madrid, Spain | Visit site |
| BRUC | Japan | Visit site |
| BRUGG GROUP AG | Brugg, Switzerland | Visit site |
| BRUGG Pipes District Heating Solutions | Kleindöttingen, Switzerland | Visit site |
| BRUGG Pipes France | Toussieu, France | Visit site |
| BRUGG Pipes Italia | Castelnuovo Rangone, Italy | Visit site |
| BS Dağıtık Enerji Sistemleri Ltd. Sti. | Etimesgut, Türkiye | Visit site |
| BS Dağıtık Enerji Sistemleri Ltd. Sti. | Çankaya, Türkiye | Visit site |
| BS Solar Pakistan | Lahore, Pakistan | Visit site |
| BSI | London, United Kingdom | Visit site |
| BSK Claus Baurmann | Harsum, Germany | Visit site |
| BST Power | Shenzhen Shi, China | Visit site |
| BSW – Bundesverband Solarwirtschaft e. V. | Berlin, Germany | Visit site |
| BTG Pactual | São Paulo, Brazil | Visit site |
| BU ENERGY | Ibbenbüren, Germany | Visit site |
| BUCHEN | Köln, Germany | Visit site |
| BVES Energy Storage Systems Association | Berlin, Germany | Visit site |
| BVi Consulting Engineers - BVi Group | Pretoria, South Africa | Visit site |
| BW ESS | Singapore, Singapore | Visit site |
| BW GLOBAL | Abbotsford, Canada | Visit site |
| BW Ideol | La Ciotat, France | Visit site |
| BWTS France | Rivery, France | Visit site |
| BWTS France | Rostock, Germany | Visit site |
| BWTS France | Nordhorn, Germany | Visit site |
| BWTS France | Amiens, France | Visit site |
| BWTS GmbH | Stäbelow, Germany | Visit site |
| BWTS GmbH | Nordhorn, Germany | Visit site |
| BWTS GmbH | Hamburg, Germany | Visit site |
| BYingPower | China | Visit site |
| BaTTeRi | Tel Aviv-Yafo, Israel | Visit site |
| BaTTeRi | Ituzaingó, Argentina | Visit site |
| BackingMinds | Stockholm, Sweden | Visit site |
| Bahra Electric | Agolada, Spain | Visit site |
| Baja Renewable Solutions | Tijuana, Mexico | Visit site |
| Bakırlar Enerji | Sarıçam, Türkiye | Visit site |
| Balfar Solar | Paranavaí, Brazil | Visit site |
| Balfour Beatty plc | London, United Kingdom | Visit site |
| Balkon Solar | Oosterwolde, Netherlands | Visit site |
| Balkon Solar | Gendt, Netherlands | Visit site |
| Balkon.Solar e.V. | Freiburg im Breisgau, Germany | Visit site |
| Ballard Power Systems | Burnaby, Canada | Visit site |
| Balmoral Comtec | Aberdeen, United Kingdom | Visit site |
| Balmoral Group | Aberdeen, United Kingdom | Visit site |
| Balteau Produtos Elétricos Ltda - Grupo WEG | Itajubá, Brazil | Visit site |
| Baltic Energy | Rønne, Denmark | Visit site |
| Baltic Power | Warszawa, Poland | Visit site |
| Balun Energy | Vienna, Austria | Visit site |
| Bandora | Porto, Portugal | Visit site |
| Banga Solar Pvt Ltd | Jamnagar, India | Visit site |
| Banga Solar Pvt Ltd | Ahmedabad, India | Visit site |
| Banpu Innovation & Ventures | Bangkok, Thailand | Visit site |
| Banpu NEXT Company Limited | Bangkok, Thailand | Visit site |
| Banpu Power Public Company Limited | Bangkok, Thailand | Visit site |
| Banverde | Mexico | Visit site |
| Baolin Electric | Wenzhou Shi, China | Visit site |
| Baraclit SpA | Bibbiena, Italy | Visit site |
| Baran Group | Bet Dagan, Israel | Visit site |
| Baringa | London, United Kingdom | Visit site |
| Baromar | Rupin, Poland | Visit site |
| Barone International | Manila, Philippines | Visit site |
| Baseload Capital | Stockholm, Sweden | Visit site |
| Baseload Power Iceland | Reykjavík, Iceland | Visit site |
| Baseload Power Japan | 東京都, Japan | Visit site |
| Baseload Power Taiwan | 臺北市, Taiwan | Visit site |
| BasenGreen | Shenzhen Shi, China | Visit site |
| BasiGo | Nairobi, Kenya | Visit site |
| BatSol Power | San Martín del Rey Aurelio, Spain | Visit site |
| Batimont Solar | Roeselare, Belgium | Visit site |
| Batron Enerji | Melikgazi, Türkiye | Visit site |
| BattCo Energy Storage Systems | Cape Town, South Africa | Visit site |
| BatterieIngenieure GmbH | Aachen, Germany | Visit site |
| Battery Associates | Dublin, Ireland | Visit site |
| Battery Cluster Portugal | Vila Nova de Famalicão, Portugal | Visit site |
| Battery Competence Cluster - NL | Helmond, Netherlands | Visit site |
| Battery Energy Power Solutions Pty Ltd | Sydney, Australia | Visit site |
| Battery Master | General Escobedo, Mexico | Visit site |
| Battery Smart | Gurugram, India | Visit site |
| Battery Smart | New Delhi, India | Visit site |
| Battery Smart | Noida, India | Visit site |
| BatteryCycle | Dublin, Ireland | Visit site |
| BatteryHouse | Shah Alam, Malaysia | · |
| BatteryLoop | Göteborg, Sweden | Visit site |
| Battfit | Chaksu, India | · |
| Battolyser Systems | Schiedam, Netherlands | · |
| Baumit Holding AG | Nürnberg, Germany | Visit site |
| BaxEnergy | Acireale, Italy | · |
| BayPath Inc. | Thornhill, Canada | Visit site |
| BayWa r.e. EMEA | München, Germany | Visit site |
| BayWa r.e. Global | München, Germany | Visit site |