The key to finding the best green investment opportunities is to understand the strengths and limitations of alternative energy sources to determine which renewable energy is the best. Currently, wind energy has made the most headway in gaining the respect of financial analysts because it is the most cost effective alternative to gas and coal power generation. As for solar companies, the sun will begin to shine on these stocks only when they reach grid parity with conventional central power plants. Grid parity is considered to be 8 to 10 cents per kilowatt-hour and is a necessary milestone for the sustainability of solar companies. So far solar companies have been given time to develop and grow through government tax credit and subsidies which have sought to create a bridge for consumer demand until grid parity is reached.
For the stock savvy, there are a number of pure-plays to take advantage of cutting edge green companies which are traded on the major stock exchanges. These include startups that are developing new methods for creating cleaner fuels and traditional large cap companies that are expanding their businesses to include environmentally friendly products, such as Johnson Controls expansion into lithium ion batteries for inclusion in hybrid cars and Exxon Mobile branching out into cleaner natural gas with their recent acquisition of XTO.
Green investing can also be achieved through exchange-traded funds (ETFs), which mimic the stock indexes made up of green companies. Investors can choose several sector specific plays, including the Clayborn/MAC Global Solar Index ETF (TAN) or the Powershares Global Wind Energy ETF (PWND). For a more diversified portfolio, investors can buy a basket of green stocks through clean energy ETFs such as the Powershares Global Clean Energy ETF (PBD) or the iShares Global Clean Energy Index ETF (ICLN), which hold businesses that are engaged in the advancement of clean energy and conservation.
For a more managed approach to green investing, mutual funds offer novice investors an opportunity to get their feet wet into emerging energy sources and conservation initiatives. The Winslow Green Growth Fund (WGGFX) and the Calvert Global Alternative Energy Fund (CGACX) are two well-known funds in this category. Like traditional investors, green investors should also evaluate a fund's performance and rating from an independent source such as Morningstar,