Poland is no Spain, but...

Poland is no Spain. Though the above statement is true, for most of the year solar exposure in Poland is high enough to be taken advantage of.

The amount of direct solar radiation measured in Poland is most frequently 600-800 W/sqm. During the hottest summer periods solar exposure reaches up to 1,200 W/sqm. Of course, the further to the south, the better the solar exposure.

it is worth it!

The savings generated by collectors during the transition period (October – March) will be lower than in the summer, when there is much more sun. It all depends on weather conditions. Some winters are freezing but very sunny. In such conditions, the CPC vacuum tube collectors, for example, are more efficient than other types. They absorb heat easily and do not lose energy thanks to their vacuum insulation. The yield may be lower compared to the summer but there will always be some savings.

For instance, if the temperature of utility water is about 10 degrees Celsius, solar energy will help us heat it from 10 to 30 degrees. The basic source of energy like gas, oil or electricity will be used over a short period of time to heat water from 30 to e.g. 40 degrees, which is a standard bath temperature. Without collectors, the stove would have to heat water by 30 degrees Celsius (from 10 to 40 degrees) instead of 10 degrees. Short-term operation – low fuel consumption.

how the sun shines in Poland?

The weather conditions in Poland are characterized by a very uneven annual distribution of solar radiation. 80% of total annual solar exposure takes place over six months in the spring/summer season (beginning of April – end of September). The solar activity time in the winter decreases to 8 hours a day, while it reaches 16 hours during the summer, in the months with the most sun.