- Soroptimist International
- Soup
- South Africa
- South Korea
- South Sudan
- Southwest Stainless Large Solar Cooker
- Spain
- Sperancea Gabone
- Spirit in Action
- Sport
- Sprouting
- Sri Lanka
- Stan Wells
- Star Flower
- States of Brazil
- States of India
- Steel Bowl Cooker
- Stella Andrassy
- Stella Odaba
- Stephan Zech
- Stephen Pearson
- Stephen and Sheila Harrigan
- Steven Jones
- Stichting Vluchteling
- Stir fry
- Stockton Solar Oven
- Stove Tec Rocket Stove
- Student Solar Cooking Science Project
- Style guide
- Su Solartech Systems
- Subi
- Sudan
- Sudan news archive
- Sun-Funnel
- Sun24
- Sun2Cook
- Sun2Steam
- SunFire 14
- SunFire Solutions
- SunFocus Solar Oven
- SunGenius
- SunLife
- SunOK
- SunPan
- SunPortal
- SunPower Co-op
- SunRay 1000
- SunRay 30
- SunRocket
- SunSaluter
- SunSpot Solar Electric Cooking
- SunStove
- SunVenture
- Sun & Cook
- Sun BD Corporation
- Sun Blaze BBQ
- Sun Bowl
- Sun Bridge
- Sun Buckets
- Sun Cart
- Sun Cook
- Sun Cookers International
- Sun Cooking Australia
- Sun Dome
- Sun Dome Solar Oven and Cooker
- Sun Juicer
- Sun Oven India
- Sun Ovens Australia
- Sun Ovens International
- Sun Peace
- Sun Scoop
- Sun Scoop Lite
- Sun Solution
- Sun Switch
- Sun and Ice
- Sun for All
- Sunbrella
- Suncatcher
- Suncookers
- Sundial calculator
- Sundish
- Sunflower Concentrator
- Sunflower Solar Cooker
- SuniCook
- Sunil K. Somani
- Sunlight
- Sunny Cooker (Tan)
- Sunny Miller
- Sunny Simons
- Sunny Solutions
- Sunrise CSP
- Sunsational Cookers Limited
- Sunshine On My Shoulder
- Sunspot
- Sunstore Technologies
- Sunstove Organization
- Suntaste
- Suntastic Panel Cooker
- Sunvention
- Super Solar Tracker for Solar Ovens
- Sur la Piste
- Surian dos Santos
- SurviveIt2
- Susan Kinne
- Suspended Box Solar Oven
- Sustainable.co.za
- Sustainable Energy Society of Southern Africa
- Sustainable NE Seattle
- Sustainable Utilization of Renewable Energy
- Suzette Bienvenue
- Sweden