As energy costs soar, America looks to solar

By Jason Szep

BOSTON (Reuters) - Apple Inc is considering harnessing the sun to power its iPod music players. California's Ironwood prison is installing more than 6,000 solar panels, and Boston's Fenway Park is tapping solar power for Red Sox baseball games.

After decades on the fringe, solar power is closing in on America's mainstream as surging fossil fuel prices and mounting concern over climate change spur states, businesses and homeowners into a quickening embrace with alternative energy.

Panels bolted to roofs to convert sunlight into electricity are still too expensive in most regions to compete with cheaper, less environmentally friendly fuels like coal without generous subsidies. Solar's high costs have kept the resource out of reach for many residences and businesses,.

But not for long, industry analysts and scientists say.

The tipping point at which the world's cleanest, most renewable resource is cost-competitive with other sources of energy on electricity grids could happen within two to five years in some U.S. regions and countries if the price of fossil fuels continues to rise at its current pace, they add.

"In the long run -- as in two to three years -- you should see competitiveness especially with the grid in a number of regions in the world," said Vishal Shah, an analyst who tracks the industry at U.S. investment bank Lehman Brothers.

Tom Werner, chief executive of SunPower Corp, the largest North American solar company by sales, sees such "grid parity" for solar power in the United States and elsewhere happening in about five years, or possibly as soon as 2010.

"That's actually more aggressive than what we would say previously, and that's because the cost of electricity is going up faster than we had ever modeled," Werner said an interview at the Reuters Global Energy Summit on June 3.