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MANAGEMENT ciencies as low as 15%, whereas Cogenra systems typically operate at 75% efficiency. Cogenra Solar has sold and installed its proprietary solar cogen- eration modules and systems since 2009. The company provides initial site evaluation and an energy con- sultation, and designs and sizes each system to meet customers' individual needs. Cogenra founder and CEO Dr. Gilad Almogy is a native of Israel, where solar hot-water systems are common in all types of build- ings, because sunlight is plentiful and natural gas service is generally unavailable. "Solar cogeneration is quickly becoming one of the wine industry's most effective tools to maximize the impact of solar ener- gy production to meet both electric- ity and hot-water needs," he said. SOLAR AT KITTYHAWK A 241-kilowatt (200 kW ther- mal and 41 kW electricity) Cogenra Solar system is operating at Kend- all-Jackson's (K-J) Kittyhawk wine production and storage facility in Windsor, Calif. The system occu- pies 9,000 square feet of rooftop space on the blending building at the four-building complex, and was the largest rooftop cogeneration array at the time of its installation in Rows of six Cogenra Solar SunDeck modules, with a control unit and inverter, com- prise the rooftop array at K-J's Kittyhawk winery. Photo: Ted Rieger late 2011. SunWater Solar, a design/ build contractor based in Richmond, Calif., installed the system. The array consists of 96 Cogenra SunDeck PVT (photovoltaic-ther- mal) modules, arranged in 16 rows, each with six modules. Each mod- ule measures 9 feet by 5 feet and has a flow rate and capacity to heat up to 100 gallons per day. The sys- tem weighs 6 pounds per square foot, a load that most industrial roofs can adequately support. The array also includes the integrated balance of system (IBOS) compo- nents that include pumps, piping, controls and Sunny Boy Invert- ers that convert the PV-generated direct current to alternating current for the building's electrical system. The tilt of the reflective mirrors moves to track the sun during the WWW.VWM-ONLINE.COM NOV - DEC 2012 VINEYARD & WINERY MANAGEMENT 53