This seems to be a recurring topic, so I thought I would share. Familiar with HPWC installs as he has done multiple. Did a great job, very clean install, on time, on budget. When others insisted that I upgrade my panel without gathering any supporting data, he walked me carefully through my sub-panel and showed me what was possible and what he would recommend. I followed his reco, which was much cheaper than any of the alternatives. For context, price was 1/3 of what I was quoted by a couple of electricians from the Tesla website (for similar quotes, ie no panel upgrade involved). Phil Hernandez <[email protected]> (goes by Felix).