There are many different variables that you must take into account when deciding where to install your panels. The panels are rated for an expected output, but those outputs are under ideal conditions all the time. Overcast, shade from a tree or any other environmental factor will reduce this number a bit.
Since children are the ones who will be running the future it is important to teach them early about renewable energy. As a parent you can set the example by using solar energy whenever possible. If it is not possible to swap your entire house over, maybe switch out your outdoor lighting.