These systems aim to offer lower overall costs by sharing a receiver between several mirrors (as compared with trough and dish concepts), while still keeping the simple line focus geometry with one axis for tracking. This is similar to trough design (and different from central towers and dishes with dual-axis). The receiver is stationary so fluid couplings are not required (as in troughs and dishes). The mirrors also do not need to support the receivers so they are structurally simpler. When suitable aiming strategies are used (mirrors aimed at different receivers at different times of day), this can allow denser packing of mirrors on available land area.
