Insolation is the total amount of radiation that the earth receives from the sun during a gi-ven period. Radiation is spread over a wide range of wavelengths, a significant part of which is visible light, which is the energy source that all living creatures depend upon. The higher the insolation, the greater the effect of the solar panels.
The European Commission’s Joint Research Centre has compiled a table with colour nu-ances to illustrate how many kWh a 1m² south facing solar panel will generate annually from a geographical perspective. The colour scale goes from blue, green, beige and brown in ascending order.
From the above it is clear that the conditions for use of solar cell technology in Southern Scandinavia are excellent. Denmark, for example, has better conditions than large parts of Holland and the centre of Germany. This is mainly due to Denmark’s long coastline. Geographically, one has to go right down to Austria and Bayern to achieve a higher in-solation.
Finally, it is important to add that the effect of the solar panels decreases with an incre-ase in temperature. Thus, even places like Greenland and Iceland have excellent condi-tions for using solar energy.