> Actually, you never heard of any significant deliveries.

> There is only marketing of single prototype large scale installations.

Really? Whoops:

November 2016: "Last month, Tesla confirmed that it delivered 300 MWh of batteries since launching Tesla Energy in May 2015. In the past 2 months alone, over 100 MWh of new Powerpack projects have been announced."

And

"Only a few weeks after announcing one of the biggest energy storage projects ever, Tesla Energy won again a massive energy storage contract. The automaker’s energy division will supply ‘Powerpacks’ to its energy storage deployment partner, Advanced Microgrid Solutions (AMS), for a major new project: a 7 MW / 34 MWh network of battery systems to support water treatment facilities of Irvine Ranch Water District (IRWD)."

https://electrek.co/2016/09/26/tesla-and-ams-win-another-maj...

And

"Tesla’s battery supply contract with Advanced Microgrid Solutions (AMS) is quickly proving to be accelerating the deployment of energy storage capacity. After announcing a major 34 MWh contract to deploy Powerpacks at water treatment facilities in California last month, AMS confirmed today that it will install new Powerpacks at buildings owned by Invesco."

https://electrek.co/2016/11/02/new-tesla-powerpack-2-project...

And of course the Edison deal

http://www.latimes.com/business/la-fi-tesla-energy-storage-2...

And of course the Australia deal that is likely to happen

And

"Previous projects include a 12 MWh with Cal State University, another one for several office buildings in Irvine, and more recently, a 1 MW Powerpack system inside Morgan Stanley’s San Francisco skyscraper."

It's pretty obvious they're scaling the business extremely quickly compared to the history of how extraordinarily slow energy storage technology has moved.