eMotorWerks has unveiled JuicePlan, a new $19/month subscription service for electric vehicles (EVs), and has launched it in parts of California, New York, New Jersey, and Maryland. The service is a backdoor for eMotorWerks, recently acquired by Enel, to become a significant player in grid-scale battery storage and demand-response (DR) in the USA, luring customers in with the promise of easy and cheap EV charging. eMotorWerks has been plugging away at the EV-charging game for a while, and was evidently attractive enough for Enel to snap it up. With a dual focus on smart city and smart home deployments, the gist of the proposition is the ability to plug in an EV, have it be charged, and also be compensated…