Let's first correct one misunderstanding that happens often.
The size of the home has nothing to do with how much solar you
need. It's all about power.
Step #1
If you are serious about using solar you need to walk around your house and
look at ways to conserve. From the first day I moved in I have kept this in
mind. This doesn't mean that you have to live like a hermit in the dark. If
you drove by my house on any given night you would think I had a party going
on.
If I am awake almost every light is on with something going on in each room.
Conservation
Look at your lights. I use all compact flourescent lights (CP light), which
are still bright but save substantial power. For example, a CP light that equals
a 75 watt bulb uses only 20 watts. I saved 55 watts of power, per bulb.
Look at your appliances. Every appliance I have bought from the refrigerator,
to the washer, to the oil burner (heat) are all Energy Star rated products.
This simply means that they are design to conserve power and natural resources.
The government sets a standard and all Energy Star products have to
exceed this standard to carry the Energy Star label.
Step #2
Once you have conserved. Dig out your utility bill.You want to find out the
average amount of power you use each month. I average 575 kWh per month. kWh
stands for kilo-watt-hours.
Go to our Grid Tied Kits page.You will find a US map showing sun patterns.
Simply compare the color of the region you live in to the colors of the charts
below. This is how much a solar system will produce on average.
Step#3
Compare this information to your power generation goal, your roof size and your
budget.
Step #4 Optional
If you are wondering how much power it would take to power 100% of your home,
you can build a larger systems by using the small systems as building blocks.