I've had really good results with SMA Sunny Island. It acts as "the grid". It's connected to batteries, and gives you a 230/120V network. Then, you had a norma

I've had really good results with SMA Sunny Island. It acts as "the grid". It's connected to batteries, and gives you a 230/120V network. Then, you had a normal solar inverter. It'll recharge the batteries when the inverter gives power, and power your equipment when it does not. Big plus is that if someday the grid arrives at your home, you can simply take it away and you won't have to touch your solar panels.