Searching charges for a particular Note

Sometimes at Home I charge off of my solar inverter at 110v and I've manually added a note of "Solar" for those charges. How can I search and pull up a list of those?
Bonus: anyone know how I can have those marked as $0.00 automatically without setting a 'time' window where charging is free - like 9am to 4pm?  Sometimes I have to 240v L2 charge during those times when in a hurry and would love to keep the two separate somehow.