Solar World makes practical products like solar power packs and one of the many solar flashlights that are available. What makes their flashlight so special is that their's is a high impact plastic, heavy duty solar flashlight that is nearly indestructible. It also has the capability to charge it's own D cell batteries and offers an adapter for charging smaller C cell batteries. Solar flashlights have taken the brunt of criticism of all the solar consumer products. For some strange reason Americans are unable or unwilling to understand that solar flashlights are not used during the day when the Sun is shining and a flashlight is not required.
Solar flashlights are highly intelligent and reliable products that are their own battery charger.
They are in fact, used in the dark, when they are required, powered with free energy from the Sun. The second type of solar product are products that are used primarily as an energy collector or harvester. These products are typically systems that harvest Sun energy and store that energy in a battery or battery bank. Solar power systems for homes or offices are the most extreme and expensive version of this type of solar product or system. Smaller and less expensive versions of these products also harvest and store energy in an internal power system.