家用电冰箱能耗新国标有啥变化？能更省电吗？一文读懂

Core Viewpoint - The new national standard for household refrigerators, effective from June 1, 2026, aims to enhance energy efficiency and practicality, significantly reducing energy consumption and increasing usable space in refrigerators [1][4][5]. Energy Efficiency Standards - The new energy efficiency labeling system categorizes refrigerators into five levels, with Level 1 being the most energy-efficient and representing international leading standards [2][3]. - The updated standards increase the energy consumption limits for each efficiency level by approximately 30% to 40%, allowing for significant energy savings for consumers [4]. Energy Savings Potential - A 500-liter refrigerator under the new standard will require 0.55 kWh/day, a 40% reduction from the current requirement of 0.92 kWh/day, leading to annual savings of about 135 kWh and approximately 68 yuan in electricity costs [4]. - With an estimated annual sales volume of 60 million refrigerators, the new standards could result in an annual energy saving of 13 billion kWh, equivalent to the power generation of the Three Gorges Dam for one and a half months [4]. Usable Space Improvement - The new standard introduces a volume utilization rate, allowing for a 10% to 30% increase in usable space within the same external dimensions of the refrigerator [5]. - For a 500-liter refrigerator, this could translate to an additional 50 to 100 liters of usable space, achieved through technological innovations in insulation materials and component miniaturization [5]. Smart Grid Interaction - The new standard includes provisions for smart grid signal response capabilities, enabling refrigerators to interact with the power grid [7]. - This feature allows refrigerators to adjust their operation based on grid load, potentially saving users over 5% on electricity costs while also alleviating pressure on the power grid [7]. Inclusion of Small Refrigerators - The new standard expands its scope to include small refrigerators, such as portable units with a capacity of 60 liters or less, which are increasingly popular [8]. - The inclusion of these small refrigerators in the energy management system is expected to accelerate energy-saving technology upgrades in the industry, leading to an estimated annual energy saving of 600 million kWh [8].