I am super happy with my solar system. Sunstra handled everything. A week after installation my power went out at 2 am. The back up battery system kicked on and worked exactly like it should. I rolled over and went back to sleep. A couple of days later we had a flash flood warning. My system notified me and went into max battery charge mode. My batteries went from 30 to 95 percent in less than an hour. Ready if I lost power. The intelligence of the enphase system is unbelievable. The installation crews were top notch. High quality materials and the guys were friendly and did a great job cleaning up after the instalation. I received my first electric bill. Normally 300 to 400. Just under 50 dollars. One step closer to electrical independence.