It is interesting Ark Invest doesn't mention solar and energy in their interviews. I wonder what they would forecast for when home storage and solar are pared across millions of homes. It is similar to the Robotaxi network, but seemingly far more revenue in the end when you understand demand response and aggregated services from the network. Solarcity already had aggregated services in their contracts years ago, so Tesla is very deep into developing this. They have pilot programs that have been going on for years. If there ever was an area most analysts covering Tesla don't have a clue on, it is the energy component or utility industry component.
Once Tesla is commonplace in the home, it could be a problem for many other such as Apple, Google, etc that want to dominate in the connected home. Tesla not coming through the speakers or the thermostat like those guys, but through your utility, your kWh. The kWh, then your internet service, your internet service then your operating system, your operating system and all your smart devices, and the rest is history. Tesla energy services market transactions (reminiscent to X.com business arena) could become a currency unto itself. That currency could be traded globally for Tesla run energy services, for Robotaxi services, for Tesla Semi operations... it is a massive transformation in economic activity as we know it.
It started with seeds, then gold, then oil... now Tesla kwhs?
Ark was right about convergence, but its not just around transport around which this convergence is happening, making this a whole new play ground few thought possible.