This is a list of renewable energy links, primarily to company websites.

General

• Atlas of Renewable energy

Hydroelectricity

Companies (small systems manufacturers)

• Cargo & Kraft Turbin AB

Solar power

Manufacturers

• Aleo Solar
• Amonix
• Advent Solar
• Arise Technologies
• Axitec
• BP Solar
• Canrom
• CEL (Solar)
• Centrosolar
• Concentrix Solar
• CSG Solar
• Cyrium Technologies
• Day4 Energy
• Daystar Technologies
• Denmark Solar Industry
• Deutsche Cell
• EDTEK
• Emcore
• Energy Innovations
• Energy Photovoltaics
• ErSol
• E-Ton Solar
• Evergreen Solar
• First Solar
• Fitcraft Prod.
• Flexcell
• Free Energy Europe
• GE Solar
• Global Photonic Energy
• Global Solar
• Gratings, Inc
• GreatCell Solar
• Guascor
• Hae Sung Solar
• Heliovolt
• Helios Technology
• Honda (Solar)
• Int. Auto. Sys.
• ICP Solar
• IMEC Solar
• Innovalight
• ISET
• Isofoton
• JuMao Photonics
• JSC "Kvazar"
• JX Crystals
• Kaneka Silicon PV
• Konarka
• Kyocera Solar
• Kyosemi
• Maharishi Solar
• Miasolé
• Microsol Power
• Mitsubishi H.I. (Solar)
• Motech Industries
• Nanosolar
• Nanosys
• Origin Energy Australia
• Pacific Solar
• Photovolt
• Photowatt
• PowerFilm
• Q-Cells
• REC
• Rose Street Labs
• RWE SCHOTT Solar
• Sanyo Solar Products
• Shanghai LiLei Elect.
• Sharp Solar
• Shell Solar
• Solar Systems
• SolFocus
• Solterra
• Solyndra Solar
• Spectrolab
• Spheral Solar
• SRI
• Stellaris Corp
• Sun Power
• Suntech Power
• Sunways
• Sustainable Tech. Int.
• Tata BP Solar India
• United Solar Ovonic
• Sunseap Solar

Companies (solar thermal manufacturers)

• Rotoplatics Trinidad Ltd
• Solahart
• Apricus Ap Solar
• Thermo Technologies
• Solel
• Stirling Energy Systems Inc
• Solucar

Companies (systems and services)

• SunEdison LLC
• IBC Solar AG
• Pacific SolarTech
• Pyron Solar

Wind Power

Manufacturers

Wave power

Companies

• Ocean Power Delivery (Pelamis Wave Energy Converter)
• Energetech
• Ocean Power Technologies (PowerBuoy)
• Wave Dragon
• Renewable Energy Holdings Plc (CETO)
• AquaEnergy Group Ltd (AquaBuOYs)
• WAVEenergy AS (Seawave Slot-Cone Generator)
• Independent Natural Resources Inc (SEADOG Pump)
• Wavegen (Limpet)
• Seavolt (Wave Rider)
• Wavemill Energy Corp
• Seabased AB
• Japan Agency for Marine-Earth Science and Technology (JAMSTEC) (Mighty Whale)
• Ocean Wave Energy Converter
• Ocean Motion International
• WavePlane Production A/S
• S.D.E. (Sea Wave Power Plant)
• A.W.S. BV (Wave Swing)
• Sea Electrical Generators Ltd
• Vortex Oscillation Technology
• Brooke Ocean Technology Ltd (SeaHorse -- Wave-Powered Moored Ocean Profiler)
• Kneider's Sea Wave Energy Propulsion Technology
• Ing Arvid Nesheim (Oscillating device)

Ocean thermal energy conversion

Companies

• Solar Sea Power International

Tidal power (and ocean current power)

Companies

• Blue Energy

Geothermal power

Companies

• Geodynamics Ltd (Hot Dry Rock)

Salinity gradient power

• "Salinity Energy Gradient FAQs"

Biofuels

• PlantDrive.com (Vegetable oil diesel)

Energy Storage

Companies

• Active Power (Flywheel Energy Storage)
• Beta Research & Development Ltd (Zebra Rechargeable Battery)
• Vanadium Redox Battery
• Vanadium Redox Battery
• Zinc Bromide Battery
• Sodium Sulfur Battery
• Compressed Air Energy Storage (CAES)
• Lithium Battery

Other

• Energyorbit :: Towards Sustainable Power and Renewable Energy