We invited Dominik Strzelec to cooperate with us because it was an obvious choice for us. We appreciate his professionalism, inquisitiveness, sense of humour and sarcasm. Together, we wanted to convince the viewers that a photovoltaic installation is not like buying bread in a bakery. It is a live installation that has to operate for at least 25 years. It is meant to generate savings on electricity bills, but first and foremost, it has to be assembled in a safe and professional mode.