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Old McDonald

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Reply with quote  #1 
I have seen only a brief news item relating to the launch of Tesla's PV roof tiles and Powerwall 2. Does anybody have more information, other than "the roof tiles will be cheaper than a conventional rood plus PV panels; and Powewall 2 will be about $US5,500?

LAT39

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Reply with quote  #2 
The full presentation is available on YouTube.  I can't post an actual link, but if you remove the spaces from the "link" below you should get right to it:

https : // www . youtube . com / watch?v=i3McwCpXfuk

A detail I read in an article on Forbes.com is that the tiles used in the presentation are non-functional.  How real they become depends on the outcome of the shareholder vote and, assuming the deal goes through, the tiles are still a year away.
SolarInterested

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Reply with quote  #3 

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Both temperature rise and airflow are integral to comparing hot air collectors
stmbtwle

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Reply with quote  #4 
Solar shingles have been around for a few years, but they were expensive. A type of panel or "tile" that could be used instead of the usual built up roof in new construction would be great. It'll be interesting to see where this goes.


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Willie, Tampa Bay
SolarInterested

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Reply with quote  #5 
They look good in the video but I wonder about potential problems with the hundreds of electrical connections required.
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Both temperature rise and airflow are integral to comparing hot air collectors
stmbtwle

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Reply with quote  #6 
That has concerned me too, living in a climate where corrosion is the bane of all things electrical.

I'd like to see a 4x8 structual panel with PV, insulation, reinforcement all in one piece, that fastens directly to the trusses.

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Reply with quote  #7 
In addition, will there be some degradation of performance from the lower light transmittance of the textured glass surface of the panels and also from the lack of ventilation under the panels causing lower outputs at hotter temperatures?
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Both temperature rise and airflow are integral to comparing hot air collectors
gbwillson

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Reply with quote  #8 
I wonder how homeowners insurance will view solar panel roofs and solar walls? Firefighters have trouble fighting fires on roofs with solar panels. And any bank of batteries in a home could be an issue, unless, of course, they are Samsung batteries![wink]

Greg in MN
stmbtwle

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Reply with quote  #9 
Yes unventilated panels will run hotter with some loss of performance, but if they're cheap enough you just add enough panels to make up for the loss.


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SolarInterested

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Reply with quote  #10 
A little bit more info from Mr Musk

https://twitter.com/elonmusk/status/792218248917811204
Solar glass tiles can also incorporate heating elements, like rear defroster on a car, to clear roof of snow and keep generating energy


https://twitter.com/elonmusk/status/792213393943826432
Should mention that the Tesla solar roof is robust against any weather, incl heavy hail. Also, higher insulating value than a standard roof.


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Both temperature rise and airflow are integral to comparing hot air collectors
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