Electricity will be the principal power in the future, increasingly derived fron non-fossil sources.
Solar PV power is already a significant international contributor on both an industrial and domestic scale.
   Because the amount of Solar power can vary there will be increasing ways of running hybrid  systems using other renewable sources such as wind or fuel cells.
  Our domestic ranges are all moveable to some extent (we do not yet sell permanent roof installations).
They include the three leading technologies of crystalline, amorphous ,and thin film; each having particular advantages in specific applications.

Amorphous Solar Cells

Amorphous technology is most often seen in small solar panels, such as those in calculators or garden lamps, although amorphous panels are increasingly used in larger applications. They are made by depositing a thin film of silicon onto a sheet of another material such as steel. The panel is formed as one piece and the individual cells are not as visible as in other types.

The efficiency of amorphous solar panels is not as high as those made from individual solar cells, although this has improved over recent years to the point where they can be seen as a practical alternative to panels made with crystalline cells. Their great advantage lies in their relatively low cost per Watt of power generated. This can be offset, however, by their lower power density; more panels are needed for the same power output and therefore more space is taken up.

Crystalline Solar Cells

Crystalline solar cells are wired in series to produce solar panels. As each cell produces a voltage of between 0.5 and 0.6 Volts, 36 cells are needed to produce an open-circuit voltage of about 20 Volts. This is sufficient to charge a 12 Volt battery under most conditions.

Although the theoretical efficiency of monocrystalline cells is slightly higher than that of polycrystalline cells, there is little practical difference in performance. Crystalline cells generally have a longer lifetime than the amorphous variety.

THIN FILM
 Thin-film technology aims to develop silicon-saving or -replacing processes by using alternative semiconductor materials. The semiconductor material (Copper Indium Gallium diSelenide, micromorph silicon or cadmium telluride) is deposited as a thin film on appropriate substrate material.

This general category is divided into application categories-general purpose, marine, and portable, together with one for smaller chargers and gadgets,  and one for accessories. Marine models can be used anywhere.