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May 11
Elon Musk sunroofs after three years. TEACHER HOROSCOPE
They were born on May 11: Salvador Dali, Barón von Munchausen, Camilo José Cela, Barbu Delavrancea, Flavius Domide.
In the Christian-Orthodox calendar are the saints: Mochie, Arghir and Dioscor. Cyril and Methodius, the luminaries of the Slavs.
Nothing in the old “Calendar”, the one made by the Dacians.
Dear wolves, padawans and hobbits, as he reports “observer “ Exactly three years ago, in 2017, Elon Musk announced that he was starting to sell Tesla sunroofs. First in the United States, and in a year in Europe and the rest of the world.
Elon Musk announced the sunroof project in October 2016. Purchase requests began to flow immediately. You didn’t even know how much a solar tile cost, or what the technology was. But people knew that everything Elon Musk did was a resounding success, so there were more than two hundred thousand purchase requests, most from the southern United States.
The price also appeared on the Tesla site, which is, in my opinion, acceptable. Tesla said the sunroof costs $ 21.85 per square foot. That is $ 235.11 per square foot, if I did the correct conversion. This is a mix of active boards, which cost $ 42 each, equipped with photovoltaic cells with a 30-year warranty and boards that are absolutely identical to the active ones, but do not produce electricity, at the price of $ 11 per square foot.
You can find one on the Tesla website Sunroof Computer which gives you pretty good information on how, what, and how much.
From my experience with solar energy, a sunroof is effective in geographic locations where there are at least 200 days of sunshine a year. To cover the domestic demand for electricity, the roof must be at least 300 square meters, with at least half facing south.
The 300-square-foot sunroof costs $ 70,351.1 and the revolutionary energy-saving battery, powerwallIt costs between $ 7,000 and $ 11,000. The energy supplied is for the consumption of a family of six, two electric cookers, heating in four rooms, a large living room and two kitchens, non-stop hot water supply, four LED televisions and six computers, as well as air conditioning in all rooms and Two refrigerators and a freezer. And a special socket for charging a Tesla electric car. Initially, the installation was free, provided by Tesla, but then this service was abandoned. It was probably a promotion, just an advertisement.
I saw the offer, the solar panels for the roof are really beautiful, very beautiful, made of special glass, or something that imitates glass. There are several variants: Tuscan, frosted, textured, shiny, thick glass.
Now after three years, let’s look at the results. About half a million homes in the United States and about a hundred thousand worldwide have been equipped with sunroofs. The results are not very good, as we would have expected. Assembly is difficult and requires highly skilled labor. Some tiles were broken during installation, much more than the designer would have expected and were covered by the warranty, which increased costs. The power of the batteries decreases over time, after around a thousand charge-discharge cycles must be changed, which requires a large additional expense. About three houses caught fire due to the system short circuit, as did two or three Tesla electric cars. In more than half of the cases, the national grid still had to be used frequently enough to charge the batteries, because there were not enough days with the Sun and the solar cells did not provide the necessary energy. So far, in the first three years of operation, Elon Musk’s solar systems, given the high investment price, have proven to be much more expensive than supplying grid electricity. But over time, the investment is likely to pay off. How long? Good question!
One thing everyone praised was that when it works, the Elon Musk system delivers exactly and perfectly 110V at 60Hz, no more and no less. And energy independence, some systems were installed in properties, villas and country houses, which had no electrical connection. As long as the Sun was out, everything was fine, when there was no Sun, I had to switch to gasoline generators.
Sunroof appears to be a greener technology, except that after depletion, solar cells and batteries become extremely polluting waste. Nothing is what it seems!
And a joke circulating in Gigafactory: Elon Musk announced that he is no longer called Musk, but Mask!
But, it is very clear and true, without solar cells, that tomorrow is definitely a new day!
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