| Jed Engineering: Located in El Cajon, California |
| Jefferson Utilities: Located in Jefferson, Wisconsin |
| Jemmett Engineering : markets self build plans for wind, petrol, steam, and water generators; and for methane generation, electric vehicles, and others. |
| Jikharev Boris: total information about renewable home systems for Russian users. |
| Johnson Controls: Johnson Controls is comprised of three primary divisions: Automotive Interiors, Automotive Batteries, and Controls & Facility Management. The Automotive Interiors division designs, engineers, and manufactures interior systems for the global automotive industry. / (added 09/2005) |
| Keep It Simple Systems (Solar Power For Portablecomputers): Makers of solar chargers for Powerbooks and other laptops |
| Kema: KEMA consists of seven divisions: Power Generation, Consulting, Quality, Contract R&D, Sustainable, Facilities, and T&D Power. KEMA focuses on providing its customers with solutions to their technical problems. The majority of its customers are in businesses related to the generation, transmission, and distribution of electricity. KEMA specializes in high-level technical consultancy, testing, inspections, and certification. |
| Keyitec Inc: Keyitec is a leading provider of Power Backup, Solar/Renewable Energy, Power Quality and Data Center solutions and equipment for the commercial, industrial, governmental, institutional, military, medical and recreational facilities. Located in Scottsdale, Arizona |
| Kimco: Located in Ohio, United States |
| Kinetic Microscience: make toys at home with common household materials, often in only a few minutes that demonstrate fascinating scientific principles. Build your own solar cell, solar cookers, etc. |
| Knv Llc : builds secluded cabins in western Montana. Solar and Wind powers the majority of the Montana log cabins that we build. / (added 09/2005) |
| Konarka Technologies: developers of versatile, affordable photovoltaic products based on the dye-sensitized solar cell, a new technology for low temperature sintering of titanium dioxide. |
| Ku Energy Corporation: Located in Lexington, Kentucky |
| Kyocera Photovoltaic Panels: |
| Kyocera Solar: Global Distribution business unit serves a network of 1,000 Authorized Distributors and Dealers, including 700 in the United States and 300 in other nations. In addition to supplying components and packaged systems to our Dealers, this business unit offers engineering and technical support, project management, sales aids and literature and training. |
