http://www.greencarreports.com/news/1087489_is-there-any-business-model-for-public-electric-car-charging-plug-in-2013-report The gist of the article is that there might not be a business model for private companies to do this. It might ultimately fall on the utilities to maintain. It is suggested that the prices being charged by the private companies are not nearly high enough to cover the equipment and maintenance costs. I have no idea if any of that is accurate. I am just sharing the article. Remember back when coffee places tried to charge for wifi? There were all of these little hotspot networks that they tried to get you to pay for. But eventually companies realized that the wifi was so damn cheap to provide that the company should use it as a loss leader. Just provide the service so that customers were more likely to come to your place to order other stuff. Now Starbucks, McDonalds and many other places regularly offer free wifi. I think ultimately that will be how stores operate with EV recharging. Electricity is really cheap. Usually between 8-15 cents per kwh. Stores will likely just offer it for free to customers if they are shopping there. It likely won't be a DC charging location, but I could certainly see a 208 volt 30 amp L2 being available for free to customers. Likely a timer on the unit so it automatically stops after one hour of being on.