Concentrating collectors are a rather marginal option in the solar market. They use parabolic and mirrored surfaces to concentrate and get sunlight energy. They are able to generate very high temperatures, and are mainly used on commercial applications. They demand direct sunlight and do not perform well in climates with low levels of direct sunlight.
They are scarcely used on residential applications. They are expensive and involve a large set of demanding requirements and configurations. They are used in large projects and electrical generation. The true alternative concerning solar panels for residential applications is between flat-plate and evacuated-tubes solar collectors.