Tesla Solar Roof aces long-term test despite being caked in ash for 5 months

The Tesla solar roof may not offer as much coverage as the company’s electric cars like the Model 3 and Model Y, but the built-in solar shingles are still a unique flagship. And if a recent long-term review shows it is, the Tesla solar roof actually appears to be delivering on its promises, even after being disabled for several months.

Tesla enthusiast and Los Angeles-based Austin Flack had a 9.09 kW solar roof installed in his home last year. Flack received $ 33,749 for its solar roof installation, which was about $ 3,000 more than the cost of a new roof ($ 12,000) and traditional high-altitude flight plates ($ 18,700). In an earlier video on his YouTube channel, Flack noted that the extra $ 3,000 for the solar roof tiles was well worth it, given that the roof of his house was badly installed anyway.

Tesla estimated that the 9.09 kW rooftop solar system would produce 8,609 kWh annually, which should offset a good portion of the house’s energy consumption. In a follow-up video and a long-term review of his solar roof, Flack found that his house had a total energy output of 7,998 kWh one year after its integrated solar system was activated. 67.8% of this was fed into the power grid and 32.2% used in the house.

With these numbers in mind, Flacks’ solar roof tiles were able to generate 93% of Tesla’s estimated energy production. However, as the homeowner noted in his most recent video, there was a good reason his solar roof was 7% underperforming. You see, 2020 wasn’t just crazy because of the pandemic; It was also a year that California faced some notable forest fires. This resulted in the solar roof being baked together in thick ash for about five months until it was cleaned by professionals in January 2021.

Given that the solar roof managed to achieve 93% of its target despite being hampered by a layer of ash for five months, the overall numbers for the system remain very impressive. This becomes even more remarkable when you look at the cost savings that the solar roof offers. According to Flack, the home’s utility bill was $ 2,245 for the year before the solar roof was installed. With the solar roof, the home’s bill was only $ 152.62, including fees. This equates to a total annual savings of $ 2,088, or 93%.

Check out the long-term assessment and actual usage results of the Tesla solar roof in the video below.

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