I like how easy it was for me as an amateur electrician with no previous experience in installing these systems because they came out of their box ready made so there were very few things i had to figure our myself (other than setting them all). It's not cheap but if you have enough money then go ahead otherwise its going be expensive anyways! They do exactly what we needed which are charge at night when power rates aren't high during off peak times & discharge into your house load throughout day hours where demand would normally spike due to more people using appliances etc..