My Exercise: Energy Saving Survey

Two years ago, the citizens of Tarakan always experience a local black out every day for four hours. According to the head of Tarakan Electric Plant (PLN Tarakan) this was done to minimize the electric consumption every night. Today we have no problem with electricity, but as a junior high school student I wonder if I can take part in minimizing the electric consumption. Therefore, I conduct a simple survey on Energy Saving. I want to measure monthly electric consumption in my own house and seek for ways to minimize the expense.