Question

3. By mid-century, the large majority (>60%) or so of humanity is expected to live in urban areas. Many decarbonization policies in the OECD are focused on the use of distributed renewable energy sources to meet much of their energy demand. If a city of one million inhabitants occupies a land area of 100 km2 and these occupants use electrical energy at the same rate as used in Western Europe, estimate the average demand for electrical power per unit land area that will result. Could this demand be met by deploying renewable solar power on the rooftops throughout the city if the panels are 20% efficient and the solar insolation (i.e. the power per unit area from the sun) is 1000 W/m2 for 8 hours per day.

Answer 1

I million inhabitants occupy 100 km² Per capita electricity consumption in European countries is 1.6 mwn I Data from cunostat: Electricity and heat statishes 2017 . Total electricity consumption = 1.6*106 why 10t .: electnical power demand/anca = 6 YID X10 100 x 109 = 16 wh/m2 demand solar insolation = 1000 W/m² for 8 haus/day = 1000 × 88365 wh/m² = 2.92x10' wh/m² i lenewable energy available = 2.92 x 106 xo. 2 = 0.584 x 106 wh/m2 c/o.584 MWh/m2 henu solar power has huge potential to meet demands