Wednesday, September 14, 2011

What are the final red stack-green stack numbers for Hong Kong?

By looking at the red stack-green stack figure above, the red stack clearly dominates the potential of the green stack, potentially creating many problems for the future. The main reason the distribution is so lopsided towards the red stack is because most of the energy production in Hong Kong is imported from China and nearby countries. Land in Hong Kong is not suitable for most renewable energy sources to develop.

The total red stack for energy production is approximately 111 kWh per day per person. The numbers that could be slightly inaccurate are airplanes and stuff. For the category of airplanes, there is no direct way to correctly find the energy production per person per day. Thus, we just made a fair assumption that each person in Hong Kong makes one flight out of the Hong Kong airport each year. In terms of stuff, 7 kWh per day per person was approximated to be the same as the United Kingdom. In reality, however, Hong Kong does not use many "stuff". The more realistic number is around 5 kWh per day per person. For the sake of this study, the difference between these two numbers is not important. What is important is the extremely low green stack number.

The total green stack number for future renewable energy capacity is only around 31 kWh per day per person. As witnessed in the next post, the more realistic future renewable energy capacity is much lower.

Overall, the difference between the red stack number and green stack number is 80 kWh per day per person.