Do you think "green technology" is a good investment?

Do you think in another 10 years solar,wind,hydro, and other forms of energy will become popular and companies/funding supporting it will increase?

If I were to invest now and save my stocks and if this “green technology” begins to take more shape in economics would it be a good investment?

Would I see a profit in 10 years if I invested now?

If so how do I go about it exactly?

How do I buy these companies stocks?

Can you point me to any right now as to start buying?

PS what way do you buy your stocks/invest online place,bank,brooker…?

Thank you.