| Sunbond Energy | Morbi, Gujarat | Visit site |
| Suncor | Calgary, Alberta | Visit site |
| Sundance Power Systems | Weaverville, North Carolina | Visit site |
| Sundata: the solar installer service software | Utrecht, Utrecht | Visit site |
| Suneast New Energy | Malvern, Pennsylvania | Visit site |
| Sunergy Solar | California | Visit site |
| Sunfaith | Xiamen Shi, Fujian | Visit site |
| Sunfina Solar LLP | Maliya, Gujarat | Visit site |
| Sunflower Solar Solutions | McKinney, Texas | Visit site |
| Sunfor Energia | Rio de Janeiro, Rio de Janeiro | Visit site |
| Sunforson Sunrack | Fujian | Visit site |
| Sunfox Capital | Chicago, Illinois | Visit site |
| Sunfuture | Yunnan | Visit site |
| Sungage Financial | Boston, Massachusetts | Visit site |
| Sungreen Latam | Salta, Salta | Visit site |
| Sungreen New Energy | Salta, Salta | Visit site |
| Sungreen Power And Renewable Energy | Haroa, West Bengal | Visit site |
| Sungrow FPV | Hefei Shi, Anhui | Visit site |
| Sungrow LATAM | Las Condes, Santiago Metropolitan Region | Visit site |
| Sungrow Power Supply Co., Ltd. | Hefei Shi, Anhui | Visit site |
| Sunhook | Laredo, Texas | Visit site |
| Sunkon | Fuoshan Shi, Guangdong | Visit site |
| Sunlight Batteries USA | Lewisville, Texas | Visit site |
| Sunlight Solar, Inc. | El Cajon, California | Visit site |
| Sunna Design | Blanquefort, Gironde | Visit site |
| Sunna Group | Åre, Jämtland | Visit site |
| Sunnic | Hamburg, Hamburg | Visit site |
| SunnyHUB | Porto Alegre, Rio Grande do Sul | Visit site |
| Sunpal Power | Anhui | Visit site |
| Sunpath Services | Beaverton, Oregon | Visit site |
| Sunplugged | Wildermieming, Tyrol | Visit site |
| Sunrad Renewable Energy and Electrical Solutions Pvt Ltd | Poonamallee, Tamil Nadu | Visit site |
| Sunrev | Nanjing Shi, Jiangsu | Visit site |
| Sunridge Legal, LLP | San Diego, California | Visit site |
| Sunrya | Purandhara, Lumbini Province | Visit site |
| Sunshine Electronics | St. Joseph, Missouri | Visit site |
| Sunsolar | Peoria, Arizona | Visit site |
| Sunspectra Enerji | Kartal, Istanbul | Visit site |
| Sunstack Racking | Las Vegas, Nevada | Visit site |
| Sunstream Green | Mumbai, Maharashtra | Visit site |
| Sunsynk Limited | Widnes | Visit site |
| Suntech | 褒忠鄉, Yunlin County | Visit site |
| Suntiago - Solar systems solutions | Herzliya, Tel Aviv District | Visit site |
| Suntree Electric Group | Wenzhou Shi, Zhejiang | Visit site |
| Sunus Sistemas Fotovoltaicos - Energia Solar em Belo Horizonte | Belo Horizonte, Minas Gerais | Visit site |
| Sunvoy | Washington, District of Columbia | Visit site |
| Sunway Steel Building | Shandong | Visit site |
| Sunways | Ecublens, Vaud | Visit site |
| Sunwoda Energy Technology Co., Ltd. | Shenzhen Shi, Guangdong | Visit site |
| Supa Energy | Auckland, Auckland | Visit site |
| SuperGrid Institute | Villeurbanne, Rhône | Visit site |
| Surana Solar | Hyderabad, Telangana | Visit site |
| SureSteps | Boston, Massachusetts | Visit site |
| Surefire Sales Solutions LLC | Fort Wayne, Indiana | Visit site |
| Surety Bond Professionals, Inc. | Framingham, Massachusetts | Visit site |
| SurgeX | AMETEK | Waukegan, Illinois | Visit site |
| Survey Hub | Nottingham, England | Visit site |
| Surveybase | Bristol, England | Visit site |
| Surveyors Australia | Sydney, New South Wales | Visit site |
| Surya Source Energy Inc. | Pasig, Pasig | Visit site |
| Suryanesia | Jakarta, Jakarta | Visit site |
| Sussex Strategy Group | Toronto, Ontario | Visit site |
| SustainabilityWorks Ireland | The Ward, County Dublin | Visit site |
| Sustainable Capital Finance | Campbell, California | Visit site |
| Sustainable Energy Systems Ltd | Preston, England | Visit site |
| Sustainable Energy Systems, LLC | Frederick, Maryland | Visit site |
| Sustainable Heat and Power Limited | Edinburgh, Scotland | Visit site |
| Sustainable Ventures | London, England | Visit site |
| Sustentable Chile | Viña del Mar, Valparaíso | Visit site |
| Suzhou HORAD New Energy Equipment | 臺北市, Taipei | Visit site |
| Suzhou Maxwell Technologies | · | Visit site |
| Suzhou Niuera Energy Co.,Ltd | Town, Bukwo | Visit site |
| Suzhou Shengcheng Solar Equipment | Suzhou Shi, Jiangsu | Visit site |
| Suzhou Talesun Solar Technologies Co., Ltd. | Suzhou Shi, Jiangsu | Visit site |
| Suzhou Xinben Intelligent Technology | Suzhou Shi, Jiangsu | Visit site |
| Svensk Vindkraft / Swedish Wind Power | Skellefteå, Västerbotten | Visit site |
| Svitzer | København, Capital Region of Denmark | Visit site |
| Swanson Rink | Denver, Colorado | Visit site |
| Swap Robotics | Kitchener, Ontario | Visit site |
| Swell Energy | Santa Monica, California | Visit site |
| Swift Solar | San Carlos, California | Visit site |
| Swiss Clean Battery AG | Frauenfeld, Thurgau | Visit site |
| Swiss Solar | Zürich, Zürich | Visit site |
| Switchee | London, England | Visit site |
| Switching AVO Electro Power Ltd | Kolkata, West Bengal | Visit site |
| Switzerland Innovation & Co. | Tunis, Tunis | Visit site |
| Syensqo Oil & Gas Solutions | The Woodlands, Texas | Visit site |
| Sylvera | London, England | Visit site |
| Symbio | Saint-Fons, Rhône | Visit site |
| Symbiotics | Genève, Geneva | Visit site |
| Syndicat des énergies renouvelables (SER) | Paris, Île-de-France | Visit site |
| Synergy Cables | Beit Shean, Northern District | Visit site |
| Synergy Solar Pvt Ltd | Tamil Nadu | Visit site |
| Synoelec Technology USA Inc. | LANSING, MI | Visit site |
| Sysgration | 臺北市, Taipei | Visit site |
| Systems With Intelligence™ Inc. | Mississauga, Ontario | Visit site |
| Szermann | Budapest, Budapest | Visit site |
| Szutest | Ümraniye, Istanbul | Visit site |
| Säntis-Electric | Altônia, Paraná | Visit site |
| s.e.t. Electronics AG | Mönchengladbach, North Rhine-Westphalia | Visit site |
| santalipower | Jingzhou Shi, Hubei | Visit site |
| solago GmbH | Solarhandel24 | Düsseldorf, North Rhine-Westphalia | Visit site |
| solar panels green energy | Hebei | Visit site |
| sonnen, Inc. | Stone Mountain, Georgia | Visit site |
| suissetec | Zürich, Zürich | Visit site |