| 27541 | Switzerland | Spirig Vogel Haustech GmbH | Industriestrasse 75, CH-9443 Widnau | +41 71 7271868 | https://www.spirigvogel.ch | | |
| 27542 | Switzerland | SSFE Sàrl | Pont de la Tine 2bis, 1863 Ormont-Dessous | +41 78 8074876 | www.ssfe.ch | | |
| 27543 | Switzerland | Stamm Bau AG | Aliothstrasse 63, CH-4144 Arlesheim | +41 61 2766111 | www.stamm-bau.ch | | |
| 27544 | Switzerland | Stark Strom GmbH | Brislachstrasse 25, 4226 Breitenbach | +41 61 7611818 | www.starkstrom-gmbh.ch | | |
| 27545 | Switzerland | Staub & Zbinden Elektro GmbH | Fultigenstrasse 1, 3088 Rüeggisberg | +41 31 8093080 | staub-zbinden.ch | | |
| 27546 | Switzerland | Steiner Elektriker GmbH | Feldbergstrasse 34, 4057 Basel | +41 61 3213030 | www.steinerelektriker.ch | | |
| 27547 | Switzerland | Steinlin + Partner AG | St. Gallerstr. 71, CH-9500 Wil | +41 71 9139911 | www.steinlin.ch | | |
| 27548 | Switzerland | Stich AG | Schulstrasse 339, CH-4245, Kleinlützel | +41 61 7710602 | https://stichsolar.ch | SMA Solar Technology AG | |
| 27549 | Switzerland | Stierli Solar GmbH | Moosmatten 6, 6287 Aesch LU | +41 41 9113311 | https://www.stierlisolar.ch | | |
| 27550 | Switzerland | Störi Gruppe | Sonnenrain 2, CH-8832 Wollerau | +41 44 7823111 | www.stoeri.com | | |
| 27551 | Switzerland | Strasser Elektro AG | Hauptstrasse 83, 8264 Eschenz | +41 52 7420042 | www.strasser-elektro.ch | | |
| 27552 | Switzerland | Streule + Alder AG | Blumenstrasse 24, CH - 9400 Rorschach | +41 71 8453936 | www.streule-alder.ch | | |
| 27553 | Switzerland | Stromlokal GmbH | Glärnischstrasse 25, 8634 Hombrechtikon | +41 76 5258726 | www.stromlokal.ch | | |
| 27554 | Switzerland | Stromwerk AG | Thurgauerstrasse 66, Po Box 135, 8052, Zurich | +41 76 4446444 | www.stromwerk.ch | | |
| 27555 | Switzerland | Stuber Spenglerei Lüftungs AG | Dürrenäscherstrasse 10, 5723, Teufenthal, AG | +41 62 7687010 | www.stuberlueftungen.ch | | |
| 27556 | Switzerland | Sun Energy | Route des Moulières, 5, CH-1217 Meyrin/Satigny | +41 22 9308216 | www.sunenergy-suisse.ch | SolarEdge Technologies, Ltd. | |
| 27557 | Switzerland | Sun Valley Sàrl | Grande Rue 9, 2316 Les Ponts-de-Martel | +41 32 7315353 | www.sunvalleysarl.ch | | |
| 27558 | Switzerland | Sunconnect GmbH | Bächaustrasse 64, 8806 Bäch | +41 44 7212280 | https://www.solaranlage-sunconnect.ch | | |
| 27559 | Switzerland | Suncontract GmbH | Eulerstrasse 15, 4051, Basel | +41 061 2732080 | www.suncontract.ch | | |
| 27560 | Switzerland | Sundesign Photovoltaic Engineering | Gamlikon 14, 8143, Stallikon, Zürich | +41 44 3901458 | www.sundesign.ch | | |
| 27561 | Switzerland | Sunergic SA | Rue Jean, Jacques Rousseau 5, 1800 Vevey | +41 21 5330088 | www.sunergic.ch | | |
| 27562 | Switzerland | Sunstyle AG | Bernstrasse 54, CH-3072 Ostermundigen | +41 31 3003020 | www.sunstyle.com | | |
| 27563 | Switzerland | Suntechnics Fabrisolar AG | Untere Heslibachstr. 39, 8700 Küsnacht | +41 44 9142880 | www.fabrisolar.ch | Fronius International GmbH, Enphase Energy, Inc., REFU Elektronik GmbH, SolarEdge Technologies, Ltd., Fimer S.p.A. | |
| 27564 | Switzerland | SunVolt Sàrl | Chemin du Bondy 21, 1721 Cormérod | +41 79 3208371 | sunvolt.ch | | |
| 27565 | Switzerland | Sunwatt Bio Energie SA | 9 Rue Peillonnex, 1225 Chêne-Bourg/GE | +41 22 3487366 | www.sunwatt.ch | | |
| 27566 | Switzerland | Swiss Photovoltaik GmbH | Schützenwiese 8, 9451 Oberriet, Kriessern | +41 71 7333856 | www.swiss-photovoltaik.ch | | |
| 27567 | Switzerland | Swiss Solar City AG | Hardstrasse 8, CH-4052 Basel | +41 61 2054944 | https://swiss-solar-city.ch | | |
| 27568 | Switzerland | Swisshaus AG | Bahnhofstrasse 4, CH-5600 Lenzburg | +41 58 2011000 | www.swisshaus.ch | | |
| 27569 | Switzerland | Swissolaire Sàrl | Route de Romont 18, 1699, Porsel, Fribourg | +41 78 6840200 | www.swissolaire.ch | Megasol Energie AG | Fronius International GmbH, Enphase Energy, Inc., ABB Italy S.p.A., Altenergy Power System Inc. |
| 27570 | Switzerland | SwissSolarDach AG | Lenkstrasse, 128, 3773 Matten | +41 33 7227072 | swisssolardach.ch/ | | |