With an appropriately sizes solar array, you could be supplying energy for anything from making coffe in the morning to running the high-draw appliances such as washers, dryers, or televisions.
Lower utility costs
Immediately upon connecting solar panels to your home's wiring, you will start to reap the benefits. Energy that you would normally pay for you will now be getting from you own solar panels. With a large enough array, you could even end up with your meter running backwards! That would mean that the energy company would be paying you.
The majority of the energy that we depend on in our everyday life is supplied from either non-renewable or non-clean-burning materials. With a clean, no-emission solar roof, you will effectively be reducing your home's carbon footprint.
Energy prices will keep rising
Right now, after a certain period of time you will save as much money on your energy bill as you spent on the installation. This is reffered to as your breakeven point. As energy prices continue to rise - which they will - that breakeven point will come sooner and sooner, so start saving now before they go up more!
Solar systems are expandable
If you put on a solar roof today and later you decide that you want to expand your solar system, you can do it very easily. Expanding a solar roof is even easier than installing it (i.e. adding 10 new modules will be much cheaper than building a new system with 10 modules)