Energy efficiency (EE), broadly defined, means using less energy to provide the same, or often superior, energy services. EE is most commonly thought of as technologies that reduce energy use relative to traditional technologies, such as LED lighting and high efficiency appliances and heating and cooling equipment.
But today, EE also includes the use of sophisticated energy management systems, internet-connected thermostats, and data analytics. Many benefits come from EE technologies and practices, including cost savings for customers, consumer empowerment and engagement, improved facility operations and building energy system reliability, enhanced grid performance, reductions in electricity bills, and job creation.
EE is widely recognized as the lowest cost resource for meeting electricity needs. Strong EE polices and investments help keep electricity bills low for all by reducing the need for new and expensive generating assets, as well as new transmission and distribution infrastructure. In 2016, The U.S. building efficiency sector accounted for nearly $70 billion in revenue and there were about 2.2 million U.S. jobsassociated with energy efficiency.
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