The biggest maker of thin-film solar power systems bought Solar Chile, expanding First Solar's (FSLR) presence in the growing South American market. Terms were undisclosed. The deal continues a consolidation trend in the solar industry. SunPower (SPWR) last week said it will sell 2 projects to a Berkshire Hathaway (BRK-A) unit for up to $2.5 bil. First Solar shares rose 2.84%.