Solar Builder

JUL-AUG 2018

Solar Builder focuses on the installation/construction of solar PV systems. We cover the latest PV technology (modules, mounting, inverters, storage, BOS) and equip installers/contractors with tips and tools to make informed purchasing decisions.

Issue link: http://digital.solarbuildermag.com/i/992843

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SOLARBUILDERMAG.COM | 21 B ifacial modules are like the sports cars of solar modules; they boast industry-leading effi- ciency breakthroughs while upholding unsurpassed aesthetic standards. Frameless bifacial modules showcase some of the highest power efficiency outputs in the solar industry because they absorb light from both sides to increase energy yield. Residential applications For residential solar projects, fra- meless modules are popular when space is limited. For example, many residential customers supplement their backyard pergola with bifacial mod- ules to provide energ y to their homes. This provides energ y production from a watertight awning that provides par- tial shade to cool the space underneath in the summer. Tempered double glass and rugged frameless modules require no additional grounding which fur- ther reduces the cost of installation and hides backsheets and grounding hardware. Commercial applications While bifacial frameless module aes- thetics play a role in commercial solar, the driving force behind their design selection is set apart by their 10-20 per- cent energy boost. For example, a ref lec- tive white Thermoplastic polyolef in roofing membrane (TPO) ref lects light to the backside of the module to generate up to 20 percent more electricity as a framed module. Furthermore, when paired with DC Tigo or Solaredge opti- mizers, these modules maximize usable surface area with custom length strings and shade mitigation. Racking One of the most common questions from solar integrators who are new to frameless modules is how to rack them. Luckily, there are options. One example is racking manufacturer IronRidge's col- laboration with Sunpreme, one of the leading manufacturers of frameless bifa- cial modules, to produce the Ironridge Frameless Clamps. These clamps can rack modules in perpendicular and paral- lel orientation. The rubber fitting located on the inside of the clamps protects the double glass framed module. For solar designers prioritizing clean aesthetics and top power density, frameless bifacial modules offer a combination of form and function. Charlie Saginaw is an account manager for Civic Solar. Since August 2015, Mission Solar has been operating an R&D test-bed at its San Antonio headquarters. Testing conditions are designed to mimic traditional utility-scale installation with dual- axis trackers and no modification to ground conditions. One year of results have shown a bifacial output increase of 7-17 percent over monofacial installed with identical conditions. MSE is currently also gathering data using single-axis and fixed-tilt trackers, as well as experimenting with various ground materials. Research has shown that with optimized conditions bifacial increase can be up to 30 percent or greater. Solaria Corporation is showing off the Solaria PowerXT 430Wp, optimized for commercial applications, now available through Solaria and its leading solar distributors. The PowerXT 430W builds on the success of the PowerXT platform, a solution in great demand among installers and customers. The demand for aesthetic, high-densi- ty solar panels has been growing, which are two key attributes of the all-black Solaria module. Backed by a 25-year product warranty, PowerXT is a high- energy yield technology that addresses rooftop space constraints and drives accelerated customer payback while increasing installers' profitability. The modules ensure labor savings on racking and system components over other lower wattage modules. Booth 7130 INTERSOLAR PREVIEW Solaria debuts PowerXT for Commercial Properties

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