Here are three key aspects to consider before you take the plunge. : If you're environmentally conscious and looking to make money, investing in renewable energy might just be your sweet spot. Energy usage is expected to grow by 50 percent by the year 2050. With close to 40 percent of U.S. CO2 pollution coming from fossil fuels burned at power plants, a shift to renewable energy could help mitigate climate change. But is it worth your investment? Renewable energy resources are those that will never run out — or are unlikely to ever run out.