similar to that used for mppt solar charge controller telescopes

Vertical axis trackers work better at higher latitudes, enabling solar charge controller panels or arrays to track the sun both at summer and winter declinations. Dual axis or azimuth trackers solve both problems simultaneously, but can be very expensive, adding from $3,500 to $6,500 to the cost of solar installation, with the smaller figure accommodating about 125 square feet of solar panels and the larger supporting 225 square feet.

There are also dual axis trackers that rely on horizontal and vertical pivots guided by a controller, similar to that used for mppt solar charge controller telescopes. These are so expensive that their use is commonly restricted to commercial solar energy systems that rely on a parabolic dish with an accompanying Stirling engine that produces energy onsite, rather than being grid-tied. This type of precise tracking is also used in concentrated solar applications (i.e., mirrors collecting sunlight directed onto receivers which convert sunlight to heat), which require minute accuracy to be effective, in that the focal point on which sunlight is directed is near the center of the reflector, or lens.