Propone is not ripe for green investors, at least according to Mad Money's Jim Cramer.

Cramer doesn’t like propane companies

The fuel might have potential, but not in today’s political environment. Earlier today on the Green and Clean Blog, I questioned the lack of American ingenuity when it comes to …

Fisker needs less batteries for the Karma plug-in hybrid, forcing battery maker A123 Systems to reduce guidance for 2012.

Speaking of EV battery problems

The plug-in battery space looks chaotic Battery maker A123 Systems has cut guidance from $210 – $225 million to $165 – $180 million because of an unexpected reduction in battery …

Oversupply in the lithium battery industry caused by unrealistic expectations in plug-in adoption rates could have a big impact on whether battery companies are a good green investment.

Batteries: The green investment bubble in the EV space?

Will plug-in batteries prove to be a bad short term investment? There has been a lot of hype in the battery industry, but it still remains to be seen whether …

Tesla Motors could be a great green investment opportunity if the Tesla Model S stays on track.

If Tesla’s business model is legitimate, there could be a lot of green ahead

Tesla ever more looks like a game changer. Plug-in vehicles still have a long way to go before they are common place, and one of the first — well, the …

Zipcar beat estimates today and posted a 2 cent profit per share and could be on its way to $27.00 according to Forbes

Zipcar proves it’s a profitable business

Changing everything about car ownership While the Street was expecting a 1 cent loss per share today from Zipcar, the company instead posted a 2 cent profit per share, as …

Rare earth shortages seem inevitable heading into the future.

Rare earth shortages appear inevitable – FT

Alternatives are being developed, but don’t expect rare earth replacements any time soon. “Recycling, rare earth substitutes and efficiency increases can all play a part but they won’t suffice to …

Solar industry has another 40 percent down to go according to Axiom Capital's Gordon Johnson.

Is shorting solar companies a worthy green investment?

Better just to stay away? Gordon Johnson of Axiom Capital has been a big solar bear in recent months because Johnson believes that the solar industry is extremely over-supplied, and …

A contract with GM to produce batteries for the Chevy Spark electric car is not enough to stop Goldman from downgrading US battery maker A123 System's stock.

A123 facing strong headwinds through 2015

Stock downgraded to sell by Goldman Sachs. In the alternative powertrain space the recent movie Revenge of the Electric Car has received a lot of positive press, but for the …

There is an oversupply in the solar industry that makes the solar space very unpredictable according to Bank of America.

Solar industry oversupplied through at least 2012

That’s the word according to B of A. Do your research. That’s a favorite mantra of MadMoney’s Jim Cramer. Thus, when a company that you like, based upon the research, …

Smart meters, solar technology and more are part of the clean tech portfolio of Jabil.

Clean tech becoming a bigger part of Jabil Circuit, Inc.

JBL embraces efficiency. Jim Cramer interviewed Jabil Circuit’s CEO, Tim Main, today on Mad Money. Jabil isn’t a pure green investment play, but it’s obvious that efficiency is a key …