Clean Energy Boom Forecast

The market for biofuels, solar energy, wind power, and fuel cells is expected to quadruple in the next decade, a report Monday said, as the price of these alternative energies decline and the world becomes more concerned about the environmental impact of fossil fuels. Collectively, global revenue from these fuels is seen growing to $167 billion by 2015 from $40 billion in 2005, according to the Clean Energy Trends report from Clean Edge, a Portland, Oregon-based research firm.

Renewables are now crossing a tipping point in terms of pricing, according to Mr. Pernick. Customers of Austin Energy

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