I have no opinion on the value of Tesla. If you made money on it, good on you. The point of the quote is that there is no rational way to value this type of company.
FORBES: Is the Rooftop Solar Industry Dying?"... About two years ago, I wrote an op-ed in the Wall Street Journal, The Hole In The Rooftop Solar-Panel Craze, where I argued that the federal government should stop subsidizing the rooftop solar-panel industry because greener, more economic alternatives are available (like utility-scale solar) ..."https://www.forbes.com/sites/brianpotts/2017/05/18/is-the-rooftop-solar-industry-dying/#2c97ad3b28aa
Tesla (SolarCity) & SunRun expected to resume PV sales in Nevada - Net-Metering is back ...https://www.reuters.com/article/us-usa-solar-nevada-idUSKBN18W2UT
2.1 Kw Suntech 175 mono, Classic 200, Trace SW 4024 ( 15 years old but brand new out of sealed factory box Jan. 2015), Bogart Tri-metric, 700 ah @24 volt AGM battery bank. Plenty of Baja Sea of Cortez sunshine.
6 months ago on CNNtech:
To some, solar roofs are an ingenuous way to kill two birds with one shingle. Installation costs should fall. Rather than pay someone to install your roof, and someone else to install solar panels, the tasks can be combined.
"Definitely this is an innovation," said Shashank Priya, a Virginia Tech professor researches energy harvesting.
Of course, if you already have a suitable roof this won't benefit you. But if your roof is aging and you're interested in solar panels, it is a perk.
"You're potentially putting solar panels over a roof system that's seen its better days," said Dean Jagusch, the president of the Mid Atlantic Roofing Contractors Association. "By installing a completely integrated roof product that not only weather proofs the building but produces electricity, it's a very smart way to go."