When you're planning on installing a solar energy system, you should shop around and get a few quotes. You'll be able to see how much prices vary between providers. While you shouldn't be completely swayed by price, it's crucial that you don't just go for the cheapest since cheaper components can cost you a lot more later.
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.