Sometimes I'm puzzled by the question: what is really Tesla doing for solar?
Solar is definitely a big piece of Tesla's mission: there is no "sustainable energy" without solar energy.
Solar needs to fill batteries to power homes and EVs.
But right now, the only innovation in that specific direction is "just" a premium roof for people who thinks PV are ugly. It's definitely nice, but it's not that big an innovation I expect from a guy who reuse rockets.
One scenario I'm developing in my mind is this: Musk is not really interested in innovating solar, at least
not at the moment. He's innovating batteries and EVs, products that weren't here before. PVs are not sexy enough, maybe, or worse: people are innovating solar cells and EVs faster than he can right now. China is slashing prices on solar energy, the growth is huge kinda everywhere. Maybe he understands that he can't do much better in also that industry, for the law of diminishing returns. He prefers to stick in highly
innovable (?) verticals like EVs, batteries (and rockets and tunnels). Industries he can really disrupt.
So, basically, I think that in Musk's mind he thinks that, for Tesla mission to succeed, he needs to generate
just demand, and he's doing exactly that.
Bears always say that Tesla is at disadvantage because utilities and the grid is not ready for mass adoption of EVs. And it's true.
And Musk, of course, knows it better than everyone: he is exactly pushing for mass adoption for EVs. He wants goverments and utilities and companies to *sugar* themselves about the surge of demand in electricity, and wants Tesla owners to understand they will save money if they can self-produce their own fuel. Just think about how much a semi will consume...
Tesla will sell good PVs, and solar roofs for premium customers, but above all batteries. Batteries for residential (PowerWalls) and batteries for companies and utilities (PowerPacks).
There will be solar and wind projects, and he will sell batteries to everyone. TE won't probably have a huge percentage of the solar market, but I'm sure that batteries will be at 90%...
Maybe, in a year or two, Musk will be "free" enough to innovate solar, and for example develop 2000$ kits for renters (see
this proof-of-concept).
So; what am I missing? Is this a likely scenario?