With the use of efficient lighting, running the AC or electric heat is probably the biggest energy usage for a house. Having solar panels supplying power during

With the use of efficient lighting, running the AC or electric heat is probably the biggest energy usage for a house. Having solar panels supplying power during the day can help reduce the load on the grid from everyone running their AC. It's more of a benefit to the grid and everyone else to have panels without a battery than it is to your own energy needs.