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Every day, we can hear news that energy reserves are getting less and less, energy shortages and power outages appear from time to time, and people are looking for new ways to save energy. Therefore, in addition to these inconveniences and rising energy use costs, why should we pay attention to energy conservation? The answer is very simple, because there are figures that nearly 87% of the world's energy (see Figure 1) is produced using carbide fuel. When they burn, they emit a lot of pollutants into our environment.

Do you know that when the TV is on standby, can it consume up to 16W per hour? Is your water heater running at 4 o'clock in the morning, and no one is taking a shower at the time? There are many ways to reduce the energy consumption of the home, with the help of wireless networks. Standards can accomplish this easily and efficiently.



One solution to our non-eco-friendly energy production approach is to use green technologies such as wind, geothermal, solar and hydro. The bad news is that this change cannot be completed overnight (it takes several years and new technologies are emerging). This is why energy protection is so important today. Another factor to consider is that in the past three decades, US energy costs have risen fourfold, and it is predicted that this increase will be more intense as energy shortages continue.

Most of the electricity consumption in a home is heating and cooling, then lighting and household appliances (see Table 1), and this is where our energy efficiency work should be.

We need to follow the simple electronic law below: I=V/R (Ohm's Law). This means that to have current (I), we need voltage (V) and resistance (R). If we remove any of the entries in the equation, there will be no current flow. In other words, "If you don't use it, turn it off," it's as simple as that.



Another problem that looks less conspicuous is the standby mode. In this mode, the devices are not fully turned on or off, but they do consume some power (see Table 2) so that they can be started whenever needed. The total annual standby power consumption in the United States accounts for 5% to 26% of total annual consumption.

According to the US Energy Information Administration (EIA), the average standby power consumption per household per day is 60 watts, equivalent to 525.6 kWh per year (0.060 kW x 8760 hours). There are many plans to reduce the daily standby power consumption to 1 watt, but disconnecting each unused device (and then reconnecting when needed) is laborious and time consuming. We need other solutions, and that's where technology can help us.