A simple AC->DC rectifier/transformer and some voltage regulation banks + integrated circuits and 10ft of cables should not be a $200,000 a piece. I can almost

A simple AC->DC rectifier/transformer and some voltage regulation banks + integrated circuits and 10ft of cables should not be a $200,000 a piece. I can almost guarantee you Tesla's BOM (at least for their 72KW supercharger) is not over $20k as delivered & installed cost for an entire station was on average under $200,000 in 2016, and stations have on average 10 chargers per station. From Tesla's disclosures on capital expenditure as it relates to supercharger stations in 2016, before scale-out savings or optimizations to date (They are now over 3,000 stations) : While $40.6 million might seem like a lot, it's a tiny portion of Tesla's total capital expenditures. Tesla spent about $1.3 billion on capital expenditures in 2016. Since Tesla's total Supercharger locations expanded from 584 to 790 during this period, the company likely spent around $197,000 per new Supercharger location during the year.