For those who can stomach volatility and take a long view of a relatively young industry, solar stocks have considerable potential. Here's one solar ETF you should know about.
News & Analysis: PowerShares WilderHill Clean Energy
These three companies are changing the way we consume energy -- and could change the prospects of your portfolio with the right investment.
It's been an ugly year for clean energy. What should you do going forward?
You can do good and still make a profit from your investing.
Making hybrid vehicles more affordable could give a boost to these ETFs.
You'll get burned if you jump into this market too early.
You may be surprised.
Can these top exchange-traded funds retain their large investor followings?
"Demand management" companies are helping utilities and consumers use less energy.
A $16 billion shift in a House bill offers signs of things to come.