{"id":85220,"date":"2019-04-16T08:10:59","date_gmt":"2019-04-16T12:10:59","guid":{"rendered":"https:\/\/\/?p=85220"},"modified":"2020-04-06T10:30:40","modified_gmt":"2020-04-06T14:30:40","slug":"the-latest-on-solar-roofs-solar-shingles-and-solar-tiles","status":"publish","type":"post","link":"https:\/\/\/2019\/04\/the-latest-on-solar-roofs-solar-shingles-and-solar-tiles\/","title":{"rendered":"The latest on solar shingles, solar roofs and solar tiles"},"content":{"rendered":"

There are many words used to describe unconventional solar PV technologies used on rooftops. Within the “building-applied” category \u2014 basically anything that isn’t traditional solar panels attached to racks \u2014 terms like solar roofs, solar shingles and solar tiles are becoming more common, especially after Elon Musk and Tesla announced their solar roof idea in 2016. While the Tesla solar roof has yet to show successful application besides a few pilot installations, there are plenty of building-applied solar products on the market right now for homeowners looking for something different than the status solar quo.<\/p>\n

Rackless solar systems<\/strong><\/p>\n

\"Solar<\/a>

CertainTeed’s Apollo II solar shingles<\/p><\/div>\n

There are two building-applied solar veterans that make what they call solar shingles but may be better described as small, rectangular solar panels that are installed without traditional racking systems. CertainTeed’s Apollo II solar shingles<\/a> are installed alongside asphalt shingles. The 63-W monocrystalline solar panels are about 46 in. long and 17 in. wide \u2014 bigger than asphalt shingles but smaller than traditional solar panels. SunTegra<\/a> has two building-applied products, also using monocrystalline solar panels that are bigger than the surrounding shingles. The SunTegra Shingle is about 52 in. long and 20 in. wide and rates at 110 W. The SunTegra Tile is also about 52 in. long but 14 in. wide and produces 70 W. The CertainTeed and SunTegra products are attached to the roofing deck for a sleek solar look not often achieved by elevated racks.<\/p>\n

\"Solar<\/a>

GAF Energy’s DecoTech product<\/p><\/div>\n

GAF Energy has a solar system that similarly attaches to the deck. GAF Energy’s DecoTech system<\/a> installs full-sized solar panels without traditional racking in the middle of a roof, while normal asphalt shingles are still used along the perimeter. The GAF Energy system offers low-profile aesthetics with a more traditional solar power output.<\/p>\n

Dow was a leader in “solar shingles” until it dropped out of the business in 2016. The original Dow Powerhouse product used CIGS thin-film solar cells mounted to the roof decking, with traditional roofing shingles or tiles around the perimeter. One of the larger problems with Dow’s design was that the thin-film solar cells got very hot with little ventilation that close to the roof, so power output decreased. In 2017, national solar installer RGS Energy bought the Powerhouse brand from Dow and began marketing improved solar shingles, this time made with monocrystalline solar cells. The 41-in. long, 13-in. wide Powerhouse 3.0 solar panels have been rated at about 55 W. RGS Energy announced in 2019 it was ditching its residential installation arm<\/a> to focus exclusively on Powerhouse solar shingle sales. (2020 UPDATE: RGS Energy has filed for bankruptcy.<\/strong><\/em><\/a>)<\/p>\n

\"Solar<\/a>

Sunflare’s prototype solar shingles on display at SPI 2018<\/p><\/div>\n

One company that is still trying the CIGS thin-film route is flexible panel manufacturer Sunflare. The company brought prototype four-cell solar shingles<\/a> to Solar Power International 2018 and expects to have a finalized product by 2021 (as confirmed to Solar Power World<\/em>). It’s unclear by looking at the prototype shingles whether the product would be installed with traditional roofing shingles or as a full roof, but Sunflare said it will focus on new roof installations.<\/p>\n

Solar shingles and tiles<\/strong><\/p>\n

When solar shingles and solar tiles are sized to look like traditional roofing products, the result can be a more uniformly designed solarized roof. Luma Solar<\/a> designs custom solar roofs, using 54-in. long and 15-in. wide, 65-W polycrystalline solar panels (or 75-W monocrystalline panels) connected together for the entire roof span. Similarly sized metal panels are used along the roof perimeter or where solar cells can’t perform. The Luma solar shingles blend in with the non-solar metal panels for a uniform look.<\/p>\n

DeSol Power Tiles<\/a> also has a solar roof but uses individual polypropylene tiles similar in shape to traditional roofing tiles. An entire roof is installed, with some of the tiles having 17-W monocrystalline solar cells embedded. The tiles are screwed to battens on the roof plywood level. The roof looks uniform in design, although the solar tiles are shinier than the solid, polymer tiles.<\/p>\n

\"Solar<\/a>

A DeSol Power Tiles installation<\/p><\/div>\n

Hanergy is rolling out two CIGS thin-film solar tile products: the curved HanTile<\/a> and the flat Thin Film Flat SOLARtile<\/a>. Both are installed among other non-solar-generating tiles. The HanTile roof installation looks less obviously like solar than the flat tiles. (2020 UPDATE: Hanergy subsidiaries have been working through bankruptcies.)<\/strong><\/em><\/p>\n

Tesla’s solar roof<\/a> \u2014 if we see more installations soon \u2014 is definitely the more aesthetically pleasing solar tile choice. The company is manufacturing solar cells hidden behind tempered glass, and matching non-solar tiles are used along the roofing edge. Tesla’s tiles are 14 in. long and about 8.5 in. wide, with an unknown power output. The solar tiles are manufactured in Tesla’s Gigafactory in Buffalo, New York, that it also shares with Panasonic. It’s assumed that the Solar Roof tiles use crystalline silicon cell technology from Panasonic. Similar to other true solar shingle and tile products, Tesla’s solar tiles replace an entire roof, so other, more traditional roofing tiles are not used.<\/p>\n

Solar roof<\/strong><\/p>\n

Another Silicon Valley hopeful, Forward<\/a> has a unique solarized roof product that isn’t solar shingles nor just deck-attached solar panels. The company claims to make what it calls “solar roof panels” \u2014 long, skinny monocrystalline silicon solar panels that (in the case of Forward’s metal roof offering) have optically enhanced glass fronts to camouflage into the roof or (in the case of Forward’s tile roof offering) have individual glass tiles over top that concentrate the sun’s rays. The solar roof panels, which have traditional aluminum frames, polymer-based backsheets and junction boxes, are about 21.5-in. wide and can be up to 18- to 20-ft long \u2014 all custom to the individual home’s roof size, Forward CEO Zach Taylor told Solar Power World<\/em>. The solar panels can’t be seen from the ground, and the roof just looks like a normal metal or tile roof, with the invisible added benefit of solar generation.<\/p>\n

It is unknown how many actual Forward solar roofs have been completed in the San Francisco Bay Area since installation began in July 2018, and no photos of the roofs are available for publication. Solar Power World<\/em> did speak with the company about its solar production methods but cannot confirm if installations have been completed. Since publication of this article in April 2019, there have been multiple claims of fraud against the company.<\/strong><\/em><\/p>\n

One thing is for sure, solar customers who prefer to have integrated roof designs have plenty of options, with more on the way in the near future.<\/p>\n","protected":false},"excerpt":{"rendered":"

There are many words used to describe unconventional solar PV technologies used on rooftops. Within the “building-applied” category \u2014 basically anything that isn’t traditional solar panels attached to racks \u2014 terms like solar roofs, solar shingles and solar tiles are becoming more common, especially after Elon Musk and Tesla announced their solar roof idea in…<\/p>\n","protected":false},"author":1401,"featured_media":85221,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"_genesis_hide_title":false,"_genesis_hide_breadcrumbs":false,"_genesis_hide_singular_image":false,"_genesis_hide_footer_widgets":false,"_genesis_custom_body_class":"","_genesis_custom_post_class":"","_genesis_layout":"","footnotes":""},"categories":[1821,640,3004,2650],"tags":[4517],"class_list":{"2":"type-post","12":"entry","13":"has-post-thumbnail"},"acf":[],"yoast_head":"\nThe latest on solar shingles, solar roofs and solar tiles<\/title>\n<meta name=\"description\" content=\"There are many words used to describe unconventional solar PV technologies used on rooftops. 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