These technologies also have a smaller reduction in cell performance under indirect or shaded illumination and this again makes them highly suited to wall installations. The advent of dedicated BIPV walling products is also good news for firms making flexible solar panels with CIGS and OPV/DSC technologies. In terms of products specifically designed for BIPV walling, the most developed are BIPV curtain walls; a small niche today, although it will grow to reach around $250 million by 2016. Flexible panels are inherently lightweight FR Coated Fabrics and therefore ideally suited to wall installations. Among the firms discussed within the report include: BISEM, Dow Chemical, Evonik, Gloria Solar, Guardian Industries, Heliatek, Mage Sunovation, Onyx Solar, Pythagoras, RECKLI, Soladigm, Solar-Wall, Sol-Ice and Tata Steel. The publisher also notes that BIPV siding is an easier business to get into than BIPV roofing, because required product lifetime requirements are much lower for siding than roofing. Many of the suppliers of these types of PV panels have targeted BIPV walling and by 2016, almost 40 percent of BIPV wall products are expected to be built using CIGS or OPV/DSC. In this report, the publisher identifies the opportunities from the fastest growing segment of BIPV; BIPV walling products. Other forecasts show which types of buildings and which geographical regions will generate revenues and how this will change over time. For the next few years most of the revenues from "BIPV walls" will come from conventional PV panels disguised by architectural features or from "repurposed" BIPV roofing. The publisher believes that dedicated BIPV siding products will exceed $1 billion in sales by the 2016-2017 period although these sales will come at the expense of conventional solar panels and walling products. These might be products that can be easily attached to walls or that are plug-in replacements for popular siding or wall tiling options. For each product type this report contains separate eight-year forecasts with breakouts by value ($ millions), volume (MW) and PV technology. Nonetheless, the publisher expects solar panel makers, outdoor wall product firms and start-ups to catch onto the BIPV wall opportunity quite quickly and to respond by designing dedicated products for BIPV walls.