The Motley Fool is wondering how much does Supercharging cost Tesla?

Costs splits between installation, maintenance and electricity costs (because Tesla Model S drivers are not directly paying for electricity). Some revenues were generated by including supercharging access into the Model S price (in some versions its an optional feature).

Tesla already has over 500 Supercharging stations.

10-Q SEC reports Tesla intends to increase the number of stations by 50% (during 2015) and spend 5% of total capital spending over the next 12 months (from mid-2015).

Goal for 2015 has already been achieved (from some 330 to over 500 stations).

"Our capital expenditures and operating expenses have significantly increased in the past year. As we continue to invest in the long term growth of Tesla, capital spending and operating expenses will continue to increase, but at a more moderate pace than in 2014. During 2015, capital expenditures are expected to be about $1.5 billion as we expand production capacity, complete Model X development, and continue to build the Gigafactory; expand our stores and service centers, expand our Supercharger network, and continue other product development programs, including Model 3."

"As of June 30, 2015 and December 31, 2014, the net book value of our Supercharger network was $139.8 million and $107.8 million and currently includes 480 locations globally. We plan to continue investing in our Supercharger network for the foreseeable future, including in North America, Europe and Asia and expect such spending to be approximately 5% of total capital spending over the next 12 months. During 2015, this investment will grow our Supercharger network by about 50%. We allocate Supercharger related expenses to cost of automotive revenues and selling, general, and administrative expenses. These costs were immaterial for all periods presented."

Assuming 150-250 new stations for 5% out of $1.5 billion ($75 million) we see just $300,000-$500,000 per station, but this is just a guess, as the above sentence isn't clear about investment and increase of the stations over the same period.

Costs related to Superchargers are immaterial, according to Tesla.

Source: The Motley Fool