1. You Can Make Money

As a result of Feed In Tariff policies in place in much of Europe, you can build sell the electricity, and that income can last for 20 years or more.
For each dollar you can reduce your electrical bill, your house can increase in value by up to $20.
Even if you don't build the solar yourself – in some markets solar companies might be willing to lease your roof or land to install their solar installation. In some cases a joint venture arrangement is also a possibility.