Solar Stock Winners and Losers: SunPower

Shares of solar energy companies finished lower on Monday, and a report on Barron's Online said that SunPower(SPWRA Quote) would be negatively impacted by aggressive pricing from Suntech Power(STP Quote).

Mehdi Hosseini of Friedman Billings Ramsey wrote that "continued weakness in end-market demand, uncertainties associated with the business model for both SPWRA and First Solar(FSLR Quote) and increased downside risk to company management guidance/consensus estimates are keeping us on the sidelines and actually have us incrementally more cautious into Q1 earnings."

Sunpower finished down 8.4% to $24.23. Suntech closed down 13.1% to $12.82. First Solar was down 3.7% to $138.48.

Trina Solar(TSL Quote) was down 3.1% to $12. Trina, which manufactures solar photovoltaic products, on Monday said it had entered into three sales agreements with customers in Germany for the delivery of about 42 megawatts of photovoltaic modules in 2009.

"We expect to capture more market share in both established and emerging PV markets, such as Australia, the Benelux market, China, France, Greece, Korea and the United States," said Arturo Herrero, vice president of sales and marketing at the Changzhou, China-based company.

Canadian Solar(CSIQ Quote) was down 11.5% to $5.72.

China Sunergy(CSUN Quote) was off 7.5% to $2.61.

Energy Conversion Devices(ENER Quote) was off 9.8% to $14.26.

JA Solar(JASO Quote) was lower by 10.6% to $3.05.

LDK Solar(LDK Quote) was down 13.1% to $7.29.

Solarfun(SOLF Quote) was down 11.9% to $3.93.

Green Plains Renewable Energy(GPRE Quote) was off by 1.5% to $2.

Yingli Green Energy(YGE Quote) closed down 13.7% to $6.05.