This article refers to and is at the same time a complement to the work The Cold Big Bang Model, hereafter referred to as MBBR or the basic work, which was printed by Tribuna Economică în 2021 with ISBN 987-973-688-429-0. I. In the current study we deduce the existence of a fundamental constant of any Universe, namely the power released during a cosmological inflation, i.e. the amount of mass-energy generated divided by the duration of the inflation. II. We show that the power flux density is independent of the definition of the Universe, resulting in a universal constant of the MBBR. This paper launches the hypothesis that a huge amount of energy can be extracted from space – as defined in the MBBR – even from areas called by abuse of language empty space. III. We propose to calculate the flux of dark matter transported on energy buses (see MBBR §Energy buses) crossing the event horizon of a black hole. We demonstrate formulas that calculate the growth in time of a black hole.