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Tesla: Great Theoretical Products

08/03/2017 1:37 PM

Once again Tesla has come out with a cool product that I would have to get on a waiting list to buy and is just expensive enough to make me hesitate. First it was the Model 3 and now it's these Solar Roofs. They look great and they can significantly reduce your electric bill, and yet they are a bit out of my price range (25,000 for a normal sized roof) and there is limited availability for them.

My frustration is I will need a roof in the next 5 years and if these were more like $15 dollars per square foot rather than $25 I'd be all in, wait list or no. Even at $25 dollars I would consider it because of the lifetime guarantee if I knew for sure 1. Tesla would be around for the next 30 years and 2. There wasn't a long wait list.

In Tesla's defense, it would be bad business to scale without testing the market first, which is what they are doing, but from my perspective as a consumer it's very frustrating seeing things that you would like to buy always seemingly just out of reach.

Here's the story on Solar Tiles that spurred my rant:

https://www.inverse.com/article/35022-elon-musk-tesla-solar-roof-photos-amazing

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#1

Re: Tesla: Great Theoretical Products

08/03/2017 1:50 PM

Use the blonde buying technique:

A window company sends a letter to a blonde saying that if she doesn't pay for the windows she bought, the company will take her to court. They provide a phone number for her to call to make a payment.

The blonde calls the number and asks what all the fuss is about.

The guy on the phone says that she had their company install new windows in her home and she never paid for them.

The blond replies, 'You told me these windows would pay for themselves in a year - and it's been a year.'

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#2

Re: Tesla: Great Theoretical Products

08/03/2017 1:55 PM

Some cities do not allow reverse billing metering of electric power, so where does that leave the buyer of such systems?

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#3
In reply to #2

Re: Tesla: Great Theoretical Products

08/03/2017 2:41 PM

It leaves the consumer with solar charging their Tesla batteries.

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#4

Re: Tesla: Great Theoretical Products

08/03/2017 3:10 PM

Early adopters pay for the R&D.

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#5

Re: Tesla: Great Theoretical Products

08/03/2017 3:28 PM

Hey if you want something, go for it.....the worst that can happen is you become a cautionary tale...but whatever happens, you'll be 'in-the-know'....

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#7
In reply to #5

Re: Tesla: Great Theoretical Products

08/03/2017 3:56 PM

If I put on solar shingles with as many lump's and gaps as I see in those pictures I would be in trouble with the homeowners.

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#16
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Re: Tesla: Great Theoretical Products

08/03/2017 10:54 PM

Counting 12 tiles in from the left, there is what appears to be an upward zigzag of dots or gaps. My guess is that these are gathering points for either 12 or 24 tiles in series, which would set the voltage of the array. Then these series groups would be paralleled to generate the total amperage.

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#31
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Re: Tesla: Great Theoretical Products

08/04/2017 7:35 PM

I'm going to go out on a limb and double down. If you look where the man is holding his hand the space above and the area to the right don't appear correct also there are shingles butted directly together at the bottom center and there are gaps between shingles at the top that you can see daylight through at this distance when laying a floor or shingling a roof you need to realize that the area is usually not a perfect rectangle and more of a trapezoid. example. What may measure as 15ft from gutter to Peak at one end of the roof may be 15 feet and 1 inch at the other. .. that's not such a big deal if you know about it and can feather in the difference over the series of courses. I would think that these have been manufactured with a click type edge-to-edge convenience! However the failure is that there is no flexibility allowable during installation this will have to be corrected before I would start a business installing these suckers.

Left parenthesis I hope voice-to-text tookes all of that correctly LOL. Right parentheses LOL

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#32
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Re: Tesla: Great Theoretical Products

08/04/2017 8:58 PM

Look again at the gaps you're seeing. I believe these thin panels are actually on top of the weather sealing shingles of the original roof.

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#6

Re: Tesla: Great Theoretical Products

08/03/2017 3:55 PM

I'd wait for Tesla to work the bugs out of the product and for the product components to come down in cost. That roof in the picture really is attractive. Neighbors might not appreciate regular solar panels but no one could complain about this alternative.

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#36
In reply to #6

Re: Tesla: Great Theoretical Products

08/07/2017 1:00 PM

Have you ever been "DownLight " of a solar roof? At certain sun angles, the reflection causes heat and glare and is extremely annoying. To have a neighborhood full of glare, at times, would be very uncomforable, at best.

Also, anyone calculate the force of a 3/4 inch, or larger, hailstone, coming in from a large thunderstorm? It doesn't hit flat, but is concentrated in a small point of the sphere, not unlike a women's high heel shoe impacts far more force, on a small area, than her body weight. The hailstones often blow out building windows and car windshields. Have seen it up close.

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#8

Re: Tesla: Great Theoretical Products

08/03/2017 4:20 PM

I just thought of something: how well will this roof work when covered with snow? What if you have to rake snow off the roof? Are the tiles themselves hot?

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#9
In reply to #8

Re: Tesla: Great Theoretical Products

08/03/2017 4:25 PM

From what I've read they are defrosting (like car windsheilds) so no raking should be required. I think you're right, I just need to wait for the price to come down and the technology to improve.

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#13
In reply to #9

Re: Tesla: Great Theoretical Products

08/03/2017 8:20 PM

What about the eves?

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#14
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Re: Tesla: Great Theoretical Products

08/03/2017 10:06 PM

(Sorry, I couldn't resist)

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#15
In reply to #13

Re: Tesla: Great Theoretical Products

08/03/2017 10:47 PM

eaves

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#17
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Re: Tesla: Great Theoretical Products

08/04/2017 1:54 AM

icicles

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#19
In reply to #17

Re: Tesla: Great Theoretical Products

08/04/2017 6:46 AM

evs!

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#23
In reply to #13

Re: Tesla: Great Theoretical Products

08/04/2017 10:56 AM

I can see this happening if solar shingles have thawing ability to melt the snow. There are probably going to be also selling accessories to these. Such as this;

Yet if you have to cash to put up solar shingles,... you'll have the cash to address those problems as well as other problems dealing with your roof concurrently.

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#37
In reply to #23

Re: Tesla: Great Theoretical Products

08/11/2017 3:24 AM

That looks like a fire hazard to me....

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#10
In reply to #8

Re: Tesla: Great Theoretical Products

08/03/2017 5:05 PM

They will naturally absorb some energy (irreversibly), and heat up, but not so much if under deep layer of snow.

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#12
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Re: Tesla: Great Theoretical Products

08/03/2017 7:34 PM

Maybe you can use your batteries to melt off the snow, and then charge them up again after the panels are clear...

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#11

Re: Tesla: Great Theoretical Products

08/03/2017 7:26 PM

Theoretical products?

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#18

Re: Tesla: Great Theoretical Products

08/04/2017 3:28 AM

As an investment, solar tiles are a reasonably easy investment to justify on a new-build as one doesn't need their area of regular tiles or slates, so there is a take-out price for that area that makes the return easier. In comparison, they look similar to a slate roof from the ground and that makes them barely noticeable.

Adding solar water heaters or electrical panels on top of an existing roof is not so attractive either financially or aesthetically.

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#20

Re: Tesla: Great Theoretical Products

08/04/2017 8:37 AM

There are a few companies that have solar shingles. Tesla or SolarCity are not the first. They just made one that looks like a slate shingle.

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#21

Re: Tesla: Great Theoretical Products

08/04/2017 10:30 AM

Not to worry, those solar shingles will soon be obsolete, just 10 years ago the panels were 2" thick, then 5 years ago they were 1/2" thick, now they are 1/4" thick. At this rate, they will be soon be as thin as a sheet of mylar. By the time your ready, or the cost has come down, somebody will have invented the longer lasting light bulb so no one will need to install solar panels on their roofs anymore.

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#22

Re: Tesla: Great Theoretical Products

08/04/2017 10:34 AM

I find the solar panel roofing concept to be a good idea but so far I have yet to find any manufacturer that rated their panels to take 100 MPH winds plus up to 1" hail and don't have a price tag that is beyond the value of most common houses.

When someone comes out with panel system that meets those physical specs and can hit 1+ watt per square foot average from sun up to sundown on a typical day for ~ $15 or less a square foot I would consider them.

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#24
In reply to #22

Re: Tesla: Great Theoretical Products

08/04/2017 11:30 AM

100 MPH plus 1" hail 1+ W per square foot for less than $15 per square foot....

Done.

Not sure why you are concerned about $ per square foot. Shouldn't dollar per watt be more to the point?

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#30
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Re: Tesla: Great Theoretical Products

08/04/2017 2:05 PM

I see I should have elaborated and said, that also doubles as permanent roofing that has a 20+ year guarantee as well.

And I had a typo on the 1 watt part. It should have read 10 watts.

Peel and stick panels at a theoretical peak 128 watts for ~23 square feet for $175 doesn't cut it as permanent roofing. Plus I don't see a 1" hail rating either.

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#33
In reply to #24

Re: Tesla: Great Theoretical Products

08/06/2017 10:56 PM

1" hail? Not adequate where I live.

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#35
In reply to #33

Re: Tesla: Great Theoretical Products

08/07/2017 3:49 AM

I have no knowledge of any hail rating for the product. I suspect it would be fine. It is a flexible strip glued to the roof, I'd guess it is pretty damage resistant....but it would be juat a guess.

Do you share identical criteria with tcmtech? Is there some criteria standard being adopted?

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#25

Re: Tesla: Great Theoretical Products

08/04/2017 12:02 PM

I agree. It really is a genius product, especially because they make it look so nice. Seemed to perform quite well under durability testing, too.

That price tag though... Insurance or not, I'd still be crapping my pants every time there was a storm. Phoenix got a good one yesterday afternoon.

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#26
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Re: Tesla: Great Theoretical Products

08/04/2017 12:09 PM

That's minor.

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#27
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Re: Tesla: Great Theoretical Products

08/04/2017 12:14 PM

Crikey!

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#34
In reply to #26

Re: Tesla: Great Theoretical Products

08/07/2017 1:09 AM

Wow! Where is that? These folks clearly aren't gardeners! Wherever it is, I don't want to go there!

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#28
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Re: Tesla: Great Theoretical Products

08/04/2017 12:15 PM

I'd still be crapping my pants every time there was a storm.

Smells like its gonna rain...

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#29
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Re: Tesla: Great Theoretical Products

08/04/2017 12:56 PM

That's why you have insurance.....no worries mate

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