A- It is required to design a generation system based on biogas as a fuel for a dairy factory where its yearly electrical energy consumption is 130 MWh. The overall efficiency of this generation system is 28% and assuming that the biogas has an average heat content of 6.5 kWh/m. 

Calculate 1- The amount of the organic waste in (kg) per day required to supply the digester built for this generation system considering that 36 liters of biogas are generated per 1kg of this wet organic waste. 

2- The appropriate size (in m) of this digester assuming that this wet waste has a density of 1000 kg/m. 

B- Discuss by your own words the following claimed arguments: 

1- Measurements of sunshine duration may be utilized to estimate global solar radiation at certain locations. 

2- Rapid diagnosis and fast precise decisions are part of the functions of smart grid technology.