What does this icon on the left mean?

Energy Star is an energy-saving plan led by the U.S. government, mainly aimed at consumer electronic products. The Energy Star program was initiated by the US Environmental Protection Agency (EPA) and the US Department of Energy (DOE) on 1992, aiming at reducing energy consumption and greenhouse gas emissions. The plan was later adopted by Australia, Canada, Japan, Taiwan Province Province, New Zealand and the European Union. The program is voluntary, and the Energy Star standard is usually 20-30% more energy-efficient than the US federal standard. The earliest products that cooperated with this plan were mainly information appliances such as computers, and then gradually extended to motors, office equipment, lighting, household appliances and so on. Later, it expanded to architecture. Starting from 1996, the US Environmental Protection Agency actively promoted the Energy Star construction plan. The Environmental Protection Agency has helped voluntary participants to evaluate the energy use of their buildings (including lighting, air conditioning, office equipment, etc.). ), plan the action plan for building energy efficiency improvement, and follow-up operation. Therefore, the energy star sign can also be found in some homes or industrial and commercial buildings that have introduced new environmental protection concepts.