The energy efficiency of solar thermoelectric refrigerators, based
on currently available materials and technology, was still lower
than its compressor counterparts. Nevertheless, a marketable solar
thermoelectric refrigerator would be made with an acceptable
performance through some improvements. For example, further
improvement in the COP may be possible through improving
module contact-resistance, thermal interfaces and heat sinks. In
addition, this could be achieved by including more modules in order
to cover a greater surface area of the refrigeration box.