Solar power may yet see sunny days in the United States, and wide open horizons around the world, if the blue-sky plans of several Southland makers of solar cells or systems come to light.

At the core of new optimism in solar power: cheaper ways to make solar panels, and the burgeoning costs of building whole new power plants.

"With our current, lowered costs, there are now a tremendous number of applications for solar power," says David Roubideaux, operations manager at Torrance-based Amonix Inc., a maker of solar power systems. "We won't replace fossil fuels, ...

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