I had the same experience as “lincoln.” I spent $2500 on panels, controller, and batteries. After struggling with dead batteries for a year and a half I finally bought a Honda 2000 generator, then a year later another one. I can run one for 30 minutes to recharge batteries without any of the “Shrinks” sucking of fuel, noise, or pollution. PLUS, I can run 120 volt appliances, PLUS the air conditioner, PLUS jump start my tow vehicle. PLUS when the power goes out at my house I can run the refrig, lights, TV, etc. My solar panels couldn’t do any of that. I’m still pro-solar though.