Energy efficiency is a way to reduce energy use, save money, and protect the planet. Improved energy efficiency can also improve comfort, health, and safety. It can help reduce the burden on consumers and create a more resilient power grid.
Some of the most common ways to increase energy efficiency include replacing old systems with more energy efficient ones. This includes new windows, insulation, and roofs.
A balanced approach to improving energy efficiency in buildings should consider the quality of the indoor environment, as well as the energy-efficient design of the building. Increasing the amount of natural light in a home is an excellent way to decrease energy use.
Buildings can also become more energy-efficient by implementing better ventilation. In addition, buildings can be optimized for their uses, such as using high-efficiency lighting and appliances. Other measures include weatherization.
For example, installing energy-efficient light bulbs can reduce electricity consumption by up to 90 percent. LED lights are a particularly good choice. They offer the same amount of light with a fraction of the energy used by an incandescent light bulb.
Improvements in fuel economy are another way to reduce pollution and costs. An internal combustion engine converts 12 to 30 percent of a fuel’s potential energy into kinetic energy. Start-stop engines can prevent waste during idling.
Other improvements in the technology sphere include energy-efficient air conditioners, refrigerators, and stoves. Newer models can use up to 70 percent less electricity.
Several countries have been able to cut energy consumption per square meter by more than four percent a year. However, this figure depends on the country and the size of the home.