Jim likes FWLT as a play on cleaning up pollution and he made the bold prediction that the stock is going to $105. Foster Wheeler is "a leader in fluidized bed boilers," Cramer said. Power plants use boilers to convert coal, gas or wood into energy, and the best part about Foster Wheeler's boilers is that they're "flexible" and allow power plants to cut sulfur dioxide and nitrogen oxide emissions, he said. He also thinks that they may have enough capital to get back to NYSE listing and then they could start buying back stock.

Jim likes SGR (Shaw Group) for a play on nuclear power. He likes that Shaw Group recently won a contract from Westinghouse and he thinks it is just the beginning. Jim also likes SGR's inside edge on nuclear projects in the United States and overseas mainly because that is the pure-play against global warming.

Jim called FSLR the most economically efficient solar company. He would be a buyer on a pullback.

MEMC Electronic has "a stranglehold on silicon wafers, the key components to most solar panels," Cramer said. MEMC is up 247% since he pushed it last Halloween.

Cramer also likes auto-supplier BorgWarner (BWA) due to them being "all about controlling emissions and enhancing fuel economy." Backorders at BWA are growing and the company does a lot of business with foreign automakers who are in better shape than the U.S. automakers.

Tetra Tech, a water investment, is a consulting and engineering company. It is also a play on global warming and natural disasters because they work on water pollution along coastal properties and even in tsunami warnings. They are geared toward clean water and it is a way to play the high price of water. 85% of revenue comes from water management along with a recent purchase of Delaney Group, which is a wind company.

Jim likes OM Group (OMG) and the word with this stock is "cobalt." The company controls 13,000 tons of cobalt which is a quarter of the world's capacity. This material is used in hybrid cars batteries and the price looks to remain stable or go higher. OMG also is a metals play with exposure to copper and an ever improving balance sheet.

Cramer said Fuel-Tech, Inc. is the ultimate speculative play on Green Investing. This is purely speculative, as it allows power plants to burn coal in a clean manner and to burn less coal for more power. This one is winning more contracts and will force coal powered plants to go greener. Cramer even said they are winning deals galore in China now.