frontal. adj. 1. of, at, or in the front. 2. (Anatomy) of or relating to the forehead: frontal artery. 3. (Anatomy) of or relating to the anterior part of a body or organ.
As the cost of solar electricity has fallen, the number of grid-connected solar PV systems has grown into the millions and utility-scale solar power stations with hundreds of megawatts are being built. Solar PV is rapidly becoming an inexpensive, low-carbon technology to harness renewable energy from the Sun.
SunPower produces some of the most efficient solar panels. However you will pay more, as much as double the price, without generating double the power.