DualSun takes into account certain assumptions in calculating the profitability of an installation. Our sizing software MyDualSun provides economic information based on a self-consumption installation configuration, i.e. all energy produced is consumed within the household with the DualSun installation.
The savings generated by a DualSun installation are calculated from energy prices: the photovoltaic electricity produced is valued at the price of electricity in peak hours; the solar domestic hot water produced is valued at the price of electricity in off-peak hours (since the water tank is heated during off-peak hours).
We also take into account the assumption that energy prices will increase.