AWARDSSHORTLIST
watts with 2 percent more energy produced overall. The REC Peak Energy Series is easy to install without sacrificing structural robustness and mechanical load.
REC’s Peak Energy modules are vastly more efficient and produce more power per square meter than ever before due to improved cell design.
Technology design advancements at the silicon, wafer, cell and module level help increase the module’s overall efficiency and power output. Attributes include: Improved electrical contact - 3 bus bars, new metallization, new connector and new junction box with integrated diode cooling deliver improved electrical contact and produce more power
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Reduced shadow effect - New finger design and thinner ribbons reduces shadow, increases sunlight, delivering more energy
Optimized glass selection - 3.2 mm glass provides an optimal temperature for a module to produce energy, enables improved sunlight transmission and is much lighter in weight
New glass etching process - Acidic texturization glass etching process (licensed by Sunarc Technology) allows the panels to capture more light during low-light and diffuse light conditions (i.e. sunrise, sunset and cloudy weather), increasing sunlight transmission by 6-8% and yearlong efficiency increase of 2%
arrangement, ie individually above windows, or more likely in a continuous side-by-side configuration that runs the length of a building.
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Additional benefits include: Light-weight design - Light-weight glass and frame for an easy-to-install weight of 40 lbs
Structurally robust - Mechanical strength of 5400 Pa to withstand heavy load and wind
Energy payback time of one year - REC is an industry leader in energy payback time which is the time it takes for a module to produce the energy used during the production process.
REC’s proprietary Fluidized Bed Reactor (FBR) process is used in its U.S. silicon manufacturing facility, reducing the amount of energy consumption required to produce silicon by 80 to 90 percent. A lifecycle analysis, carried out Utrecht University and the Energy Research Centre of the Netherlands, showed that REC silicon, wafer, cell and module operations have record low carbon footprints compared to other PV solar technology producers. The company is committed to recycling as a founding and board member of PV Cycle.
The idea to combine solar shading with PV is not new, however the few manufacturers that do have systems use bespoke glass-glass PV laminated cells to create their shades. these systems are bespoke for each project, have low generation efficiency, expensive to design and install, but most significantly are very heavy and very large (width).
The weight restrictions do not enable the use of horizontal blades, which results in vertical blades down a facade. This arrangement is not appropriate for most buildings, and has only been applied to very expensive one-off buildings. The low generation and high cost means these systems do not payback in reasonable timescales even when considering FIT. The systems that have previously been installed have been justified for image/marketing reasons not performance or return on investment.
The Sunblade solution enables horizontal blades, which appear very similar to conventional shading systems, commonly specified by architects. The high efficiency special narrow mono- crystalline modules developed in 2009 are lightweight and enable the PV to be installed within a conventional aluminium extrusion, with conventional dimensions and appearance. The modular design allows the standard product to be used on an array of building types and facades, with competitive payback.
PV Application Award
i-Solar Ltd Sunblade
The Sunblade is a solar shading device for buildings that incorporates high efficiency PV generation within the shading blades. The Sunblade is designed to be installed in a modular
www.solar-pv-management.com Issue V 2010
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