Grid-tied Power Systems
Grid-intertied power systems are for folks who are (or will be) connected to utility company power lines (the "Grid"). They plan to use the Grid to supplement what they are able to make with renewable energy sources like the sun or wind. They are also called gridtie, grid-tie, gridtied, grid-tied, grid intertied, grid-intertied.....! They can be powered by solar panels or wind generators.
Grid-intertied Solar Power Without Batteries. This is what the Federal incentives and State rebates are encouraging you to buy. It provides you with electricity which is less expensive in the long run. It also increases the amount of energy available through the Grid because electricity in excess of what you use is routed into the Grid. But when the Grid goes down, your house is also without electricity. Look at sample Solar Grid-tie Systems.
Grid-intertied Solar with Battery Back-up. When the grid goes down you can still run some essential loads IF you have a battery backup system.
Grid-intertied Wind Power Systems produce power with wind generators. They can be set up with or without emergency back-up power. Look at sample Wind Gridtie Systems.