In the Mining Plaza, the solar lenses are not able to be used until Samus has the Echo Visor. Using it, Samus can spot sonic transmitters that are part of a Luminoth sonic security system and destroy them. Doing so raises all three lenses until they are aligned. A beam of sunlight shines through them onto an Echo Gate, causing it to retract and reveal an Energy Tank. This Tank can be reached via the Screw Attack.