In preparation for my Model 3, I've been researching what options my energy provider has available. They are currently running a TOU Metering pilot program that charges higher rates from 4-8PM, and lower rates from 8-4PM. I'm curious if it makes sense for me to switch once I start charging an EV every night (or possibly even switch now, as other than cooking dinner we don't use much power between 4-8PM). Does anyone know of a good TOU calculator available online? Or am I stuck with using an Excel spreadsheet? Thanks!