Put each wall or ceiling light on it's own wall switch so you can select lighting precisely where it is needed. More, smaller lights use less power with more lighting options than a large central light. Timer light switches are great for lights often turned on and then forgotten, as in children's rooms, closets, stair wells, and particularly outdoor lights. The tap of a button or a wind up timer starts the light and sets the time anywhere from a few seconds to an hour, then the light goes out. The timers help keep the peace if lights are often forgotten and carelessly left burning.
Motion sensing lights outdoors are great for arrival and departure.
Most AC time and motion sensing switches work with inverters, but only if the inverter is running, not in search mode. We offer DC light timers and motion sensors that are on duty all night with almost no power used. Light dimmers should not be used unless you have a sine wave inverter. And to date, most compact and other fluorescent bulbs cannot be dimmed. Some energy saving refrigerators, especially small ones, are DC powered, also water pumps, and ceiling fans may also need a DC circuit.