Suntech panels sold out through early 2010

"We were basically in a sold-out situation in Q4 and we're in a sold-out situation at least through Q2," Steve Chadima, vice president of external affairs at Suntech, said at a conference hosted by Needham and Co in New York.

"We're basically selling anything we can produce and I know we're not alone," Chadima said.

Demand for solar power products has rebounded after a difficult 2009, when the global credit crisis dried up financing for new projects and panel prices plummeted.

Chinese players such as Suntech, Trina Solar Ltd and Canadian Solar Inc have seized on rising demand, turning their low-cost structures into sales, and several plan to boost production capacity in 2010.

As the market picks up, Suntech is seeing demand from more countries, Chadima said.

Germany, the world's top solar market, accounts for less than half the company's sales. Japan, which recently introduced incentives to spur solar power adoption, is "coming back very strong," he said.

China's solar market, which many expect to grow massively, needs another nine to 18 months to take off because the Chinese government's proposed aid for the sector is low, Chadima said.

With stable prices for panels and efforts to cut other costs, the Suntech has maintained gross margins for its panels at about 20 percent, Chadima said.

Suntech shares were down 2 percent in trading on the New York Stock Exchange.

Suntech's shares have gained about 250 percent since falling to a low of $5.09 in March.