CHICAGO — A perfect storm of high energy prices, government subsidies and renewed interest from Wall Street is boosting investment in alternative energy projects, fund managers and other experts said on Monday. ‘This is the best time to think about energy technology whether you’re a large equity fund, trying to get money for a company you’re running or to make returns in the stock market,’ said Philip Deutch, managing partner of NGP Energy Technology Partners, a $150 million private equity investment fund at a conference on renewable energy. Well known investors such as Goldman Sachs Group Inc. , the Carlyle Group and Berkshire Hathaway Inc. have all made recent investments in wind and solar power, Deutch told about 75 people attending the conference in Chicago sponsored by Platts, an energy industry publication. And Microsoft Corp. Chairman Bill Gates and venture capitalist Vinod Khosla are investing in ethanol. Recent public offerings by SunPower Corp. , a California-based maker of solar panels, and Q-Cells , a German maker of solar cells, have also caught the attention of investors. But alternative energy is not without risk, primarily due to rapid changes in technology and volatile commodity […]