I figured the time was ripe to harness the sunshine here in the mat-su valley. i chose a vertical array on the 3 story wall on the southwest side of the house for ease of maintenance and fear of wind, snow and foot traffic on my roof; knowing that there would be a trade off in efficiency. The installation of the panels went very well. 17- 300 watt panels. looks good, very sturdy infrastructure. The installation of the battery, inverter and switching was very professional. i have great confidence in the workmanship and equipment.