When thinking about installing a solar or a solar-plus-storage system at your home or business, there’s one piece of information that is of the utmost importance: how much electricity do you use, and which of your home appliances use that electricity. That’s exactly where Lumin can help: the three-year-old, Charlottesville, Virginia-based company is joining the relatively nascent field of creating smart circuits, allowing you to dynamically choose or automate what to power with your solar and storage, which is especially useful in the event of an outage.