![]() ![]() So 35 per cent solar on an a large Australian home with a 300 square metre roof is about equivalent to a 10 kW solar array. Comparing numbers from other users, playing with the Tesla calculator and some back of the napkin maths gives about 100 watts per square metre. Tesla has not given numbers on the exact size of each tile, compared with how much solar power it generates. That means the Tesla roof is $56,400 more expensive. That's $39,000 worth to replace with a normal roof, or $95,400 if installing a Tesla Solar roof. Using a large single Australian home as an example, it could have a 300-square metre roof - similar sizes are used for the Tesla price example. That means the Tesla solar roof is about 2.5 times more expensive than a comparable - but not solar - roof. Still, Tesla is targeting the higher end, so let's use the $130 a square metre figure. The tempered glass in Tesla's tiles is designed to conform to the toughest durability standards for both roofs and solar products anywhere in the US, according to Tesla. ![]() Likewise, the costs when building a new house can be cheaper, as the old roofing does not need to be removed. If other repairs aside from tiles are needed, the costs can also be a lot higher. For speciality roofs like slate, it can be even more. Pricing depends on a huge number of factors, but an average roof, fully installed, ranges from about $80 a square metre on the low end, to $130 a square metre for higher end products such as terracotta tiles. Depending on the area, common materials such as concrete tiles can be cheap, guaranteed for 50 years or more, and last even longer without issue. We enjoy a wide range of roofing materials in Australia - many of which can be comparatively affordable. Tesla suggests that at the $US21.85 US price, the ongoing solar generation over 30 years makes the roof cost competitive with a normal roof. The tiles are backed by a 30-year warranty, which is more about the solar - which degrades in output over time - than the panels themselves, which are tough glass. It's $39,000 to replace a roof with a normal roof, or $95,400 if installing a Tesla Solar roof. $US21.85 US per square foot equates to $US235 per square metre, or $318 per square metre at current exchange rates to the Australian dollar. Keep in mind that Tesla is targeting high end roof tiles, not the budget variety or steel roofing. There are two types of tile – one with solar, and ones without, and the price includes 35 per cent of the tiles as the active power generating type.Īustralian and American roofing can be quite different, with variable build methods, regulations and environment – such as snow. Australians don't get access, but Tesla has suggested that home owners can expect to pay about $US21.85 ($29.30) per square foot for the solar roof, fully installed. In the US, Tesla has a calculator that helps home owners estimate the size and cost of replacing their roof. But as we have seen with the Powerwall, not everyone is worried about economics, and will happily jump on board as early adopters. The concept of solar roof tiles is not exactly a new one either - many companies have tried to bring them to market, but the cost to benefit ratio was just not there. ![]()
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