The autos and the utilities could have a nice little symbiotic relationship. While the auto industry has something to build, utility companies have another place to sell their product.

The utilities are hoping for a major shift in vehicles from gasoline to electricity. If such a shift takes place, according to the Pacific Northwest National Laboratory, oil imports would drop by 52 percent.

The talks are exploratory right now, but worth watching.

The stocks of alternative-energy companies, which had enjoyed boom times, have been slashed.

In the last three months, according to a report in today’s Wall Street Journal, renewable-energy stocks have dropped 45 percent, according to New Energy Finance, a London-based consultancy. But this could change.

Congress’ renewal of federal tax credits for solar- and wind-energy companies a couple weeks ago is expected to attract tens of billions of dollars in new private investment.  But it’s unclear what will happen to these companies if tighter credit standards dry up bank lending. Green businesses that use newer technologies have the most to lose because they may entail more risk in the eyes of bankers.

I’ll be reporting more on the economic future of renewable energy. Meantime, green businesses still say that while there’s a lot to worry about, there’s also a lot to be hopeful for.