“…Back in 2010 researchers [99] provided all RES technologies will have an increasingly important role to play in the nearest future, as they provide a great potential to contribute to the reduction of GHG emissions, ease fossil fuel dependency and stabilize energy costs. Microgeneration technologies in particular have the potential to contribute favourably to energy supply [106], furthermore-it could fundamentally change the relationship between energy companies and consumers [107] by literally turning the system upside down: as at least partial shift would be performed from an electricity system based on central power stations (like nuclear, coal or big natural gas-based power plants) to small-scale power generation at the domestic level [80]. In that case, consumers would become energy suppliers in their own right, however, a pre-condition for this change is the diffusion of microgeneration technologies into the market which will depend on consumers' acceptance of microgeneration technologies [107], i.e., their willingness to pay for RES technologies in their households.…”